|
TERMS & SETTINGS FOR AWARD BIOS |
| 16 Bit I/O Recovery Time |
See 8/16 Bit I/O Recovery Time, below. |
| 16 Bit ISA I/O Command WS |
Your system quite possibly has much higher performance than some of your input/output (I/O) devices. This means that unless the system is
instructed to allow more time, more wait states, for devices to respond, it might think the device has malfunctioned and stop its request for I/O. If all your I/O
devices are capable, then disabling this setting could result in greater throughput. Otherwise, data could be lost. |
| 16 Bit ISA Mem Command WS |
When memory is accessed on the ISA bus, the system
must allow for the relatively slow speed of the ISA bus. This setting allows you to match the speed of device memory located on the ISA bus with the system
ability to read/write to that memory. |
| 1st/2nd Fast DMA Channel |
Select up to two DMA channels for Type F DMA, if
supported by the I/O peripheral using the DMA channel. |
| 1st/2nd/3rd/4th Available IRQ |
If an installed PCI device requires interrupt
service, you may manually select an unused interrupt line for PCI IRQs. NA indicates the interrupt is assigned to an ISA bus device and is not available to any
PCI slot. |
| 2 Bank PBSRAM |
For PBSRAMs, 3-1-1-1 timing is available for both
read and write transactions at 66 or 75 MHz. VP2 |
| 2nd Channel IDE |
If you install an add-in IDE interface as the
second IDE channel, select Disabled to avoid a conflict with the on-chip second IDE channel. |
| 8/16 Bit I/O Recovery Time |
The I/O recovery mechanism adds bus clock cycles
between PCI-originated I/O cycles to the ISA bus. This delay takes place because the PCI bus is much faster than the ISA bus.
These two fields let you add recovery time (in bus clock cycles) for 16-bit and 8-bit I/O. |
| A |
| ACPI I/O Device Node |
Selecting Enabled enables ACPI device node
reporting from the BIOS to the operating system. VP2 |
| AGP Aperture Size (MB) |
Select the size of the Accelerated Graphics Port (AGP)
aperture. The aperture is a portion of the PCI memory address range dedicated for graphics memory address space. Host cycles that hit the aperture range are
forwarded to the AGP without any translation. |
| ALE During Bus Conversion |
Depending on system speed, you can select a Single
or a Multiple ALE signal during a bus conversion cycle. |
| APM BIOS |
Select Enabled to turn on the BIOS power-management
features. |
| Asysc. SRAM Read WS |
Select the correct cycle timing combination for the
system board design and SRAM specifications. |
| Asysc. SRAM Write WS |
Select the correct cycle timing combination for the
system board design and SRAM specifications. |
| AT Clock Option |
The system board designer selects whether the AT
bus clock is tightly synchronized with the CPU clock or is asynchronous. |
| AT-BUS Clock |
The chipset generates the ISA bus clock (ATCLK)
from an internal division of PCICLK. You can set the speed of the AT bus in terms of a fraction of the CPU clock speed, or at the fixed speed of 7.16 MHz. |
| Audio DMA Select |
Select a DMA channel for the audio port. |
| Audio I/O Base Address |
Select a base I/O address for the audio port. |
| Audio IRQ Select |
Select an interrupt for the audio port. |
| Auto Clock Control |
If APM is not enabled or not present in your
system, the BIOS manages the CPU clock when this field is Enabled in the same way APM power management would manage the clock. |
| Auto Configuration |
Auto Configuration selects predetermined optimal
values of chipset parameters. When Disabled, chipset parameters revert to setup information stored in CMOS. Many fields in this screen are not available when Auto
Configuration is Enabled. |
| Auto Detect DIMM/PCI Clk |
To reduce the occurrence of electromagnetic
interference (EMI), the BIOS detects the presence or absence of components in DIMM and PCI slots and turns off system clock generator pulses to empty slots. |
| Auto Suspend Timeout |
After the selected period of system inactivity, the
system automatically enters Suspend mode. |
| B |
| Back to Back I/O Delay |
Select Enabled to insert three ATCLK signals in
back-to-back AT bus I/O cycles. |
| Bank 0/1 DRAM Type |
The value in this field is set by the system board
manufacturer, depending on whether the board has paged DRAMs or EDO (extended data output) DRAMs. |
| BIOS PM on AC |
If you wish the BIOS power-management features to
remain active when the system is connected to an external power source, set to On. |
| BIOS PM Timers |
After the selected period of inactivity for each
subsystem (video, hard drive, peripherals), that subsystem enters Standby mode. |
| Boot From LAN First |
When Enabled, the BIOS attempts to boot from a LAN
boot image before it attempts to boot from a local storage device. |
| Boot Sequence |
The original IBM PCs loaded the DOS operating
system from drive A (floppy disk), so IBM PC-compatible systems are designed to search for an operating system first on drive A, and then on drive C (hard disk).
However, modern computers usually load the operating system from the hard drive, and may even load it from a CD-ROM drive. |
| Boot Up Floppy Seek |
When Enabled, the BIOS tests (seeks) floppy drives
to determine whether they have 40 or 80 tracks. Only 360-KB floppy drives have 40 tracks; drives with 720 KB, 1.2 MB, and 1.44 MB capacity all have 80 tracks.
Because very few modern PCs have 40-track floppy drives, we recommend that you set this field to Disabled to save time. |
| Boot Up NumLock Status |
Toggle between On or Off to control the state of
the NumLock key when the system boots. When toggled On, the numeric keypad generates numbers instead of controlling cursor operations. |
| Boot Up System Speed |
Select High to boot at the default CPU speed;
select Low to boot at the speed of the AT bus. Some add-in peripherals or old software (such as old games) may require a slow CPU speed. The default setting is
High. |
| Burst Write Combining |
When this option is Enabled, the chipset assembles
long PCI bursts from the data held in these buffers. |
| Byte Merge |
This field controls the byte-merge feature for
frame buffer cycles. When Enabled, the controller checks the eight CPU Byte Enable signals to determine if data bytes read from the PCI bus by the CPU can be
merged. |
| Byte Merge Support |
Byte merging holds 8- or 16-bit data sent from the
CPU to the PCI bus in a buffer where it is accumulated, or merged, into 32-bit data for faster performance. The chipset then writes the data in the buffer to the
PCI bus when appropriate. PCI Pipeline and Pipelining combine PCI or CPU pipelining with byte merging. Byte merging is used to enhance video performance. |
| C |
| Cache Read Burst |
These SRAM timing numbers are the pattern of cycles
the CPU uses to read data from the cache. The system board designer must select the proper combination, depending on the cache size and access speed of the cache
SRAMs. Do not reset this option from its default. |
| Cache Read Wait States |
Select the number of wait states for the cache
output enable signals. When 0 WS is selected, CROEA# and CROEB# are active for 2 CPU clocks; for 1 WS, CROEA# and CROEB# are active for 3 CPU clocks. The actual
number of clocks that CROE# remains active may be longer. The number is automatically adjusted during L2 cache write-back-to-DRAM cycles to synchronize with the
DRAM controller. |
| Cache Timing |
For a secondary cache of one bank, select Faster.
For a secondary cache of two banks, select Fastest. VP2 |
| Cache Write Burst |
Sets the precise timing used during burst writes to
the cache. |
| Cache Write Wait State |
The system board designer may elect to insert a
wait state into the cache write cycle, if necessary. |
| CAS Address Hold Time |
Select the number of cycles it takes to change the
CAS address after CAS has been initiated (asserted) aimed at a target address (location) in DRAM. |
| CAS Low Time for Write/Read |
The number of clocks cycles the CAS signal is
pulled low for DRAM writes and reads depends on the DRAM timing. Do not reset this field from the default value specified by the system designer. |
| CAS# Precharge Time |
Select the number of CPU clocks allocated for the
CAS# signal to accumulate its charge before the DRAM is refreshed. If insufficient time is allowed, refresh may be incomplete and data lost. |
| CAS Pulse Width |
The system designer must set the duration of a CAS
signal pulse (in timer ticks). |
| Chipset NA# Asserted |
Selecting Enabled permits pipelining, in which the
chipset signals the CPU for a new memory address before all data transfers for the current cycle are complete, resulting in faster performance. |
| Chipset Special Features |
When disabled, the chipset behaves as if it were
the earlier Intel 82430FX chipset. |
| CPU Addr. Pipelining |
Pipelining allows the system controller to signal
the CPU for a new memory address even before all data transfers for the current cycle are complete, resulting in increased throughput. |
| CPU Burst Write Assembly |
The chipset maintains four posted write buffers.
When this option is enabled, the chipset is allowed to assemble long PCI bursts from the data held in these buffers. |
| CPU Core Voltage |
Set this field to match the voltage of the
installed CPU, or set to Auto to permit the BIOS to autodetect the voltage. End users should not change the value in this field unless they replace the CPU with
one of a different voltage. VP2 |
| CPU fan on temp high |
When the CPU temperature reaches a preset limit,
the CPU fan turns on. |
| CPU Host/PCI Clock |
Select Default or select a timing combination for
the CPU and the PCI bus. When set to Default, the BIOS uses the actual CPU and PCI bus clock values. |
| CPU Internal Cache /External Cache |
Cache memory is additional memory that is much
faster than conventional DRAM (system memory). CPUs from 486-type on up contain internal cache memory, and most, but not all, modern PCs have additional
(external) cache memory. When the CPU requests data, the system transfers the requested data from the main DRAM into cache memory, for even faster access by the
CPU. |
| CPU Line Read |
This field lets you Enable or Disable full CPU line
reads. |
| CPU L2 Cache ECC Checking |
When you select Enabled, memory checking is enable
when the external cache contains ECC SRAMs. |
| CPU Line Read Multiple |
A line read means that the CPU is reading a full
cache line. When a cache line is full it holds 32 bytes (eight DWORDS) of data. Because the line is full, the system knows exactly how much data it will be
reading and it doesn't need to wait for an end-of-data signal, freeing it to do other things.
When this item is Enabled, the system is allowed to read more than one full cache line at a time. |
| CPU Line Read Prefetch |
See the field below. When this item is Enabled, the
system is allowed to prefetch the next read instruction and initiate the next process. |
| CPU Read Multiple Prefetch |
A prefetch occurs during a process (e.g., reading
from the PCI or memory) when the chipset "peeks" at the next instruction and actually begins the next read instruction. This chipset has four read lines. A
multiple prefetch means that the chipset has the capacity to initiate more than one prefetch during a process. |
| CPU to DRAM Page Mode |
When Disabled, the memory controller closes the
DRAM page after a DRAM access. When Enabled, the DRAM page remains open until the next access. |
| CPU to PCI Buffer |
When this field is Enabled, writes from the CPU to
the PCI bus are buffered, to compensate for the speed differences between the CPU and the PCI bus. When Disabled, the writes are not buffered and the CPU must
wait until the write is complete before starting another write cycle. |
| CPU-To-PCI Burst Mem. WR. |
When this option is enabled, the chipset is allowed
to assemble long PCI bursts from the data held in its buffers. SIS5597 |
| CPU to PCI Byte Merge |
Byte merging permits merging of the data in
consecutive CPU-to-PCI byte/word writes with the same dword address, into the same posted write buffer location. The merged collection of bytes is then sent over
the PCI Bus as a single dword. Byte merging is performed in the compatible VGA range only (0A0000-0BFFFF). |
| CPU-To-PCI IDE Posting |
Select Enabled to post write cycles from the CPU to
the PCI IDE interface. IDE accesses are posted in the CPU to PCI buffers, for cycle optimization. |
| CPU to PCI POST/BURST |
Data from the CPU to the PCI bus can be posted (buffered by the controller) and/or burst. These are the methods:
| POST/CON.BURST |
Posting and conservative bursting |
| POST/Agg.BURST |
Posting and aggressive bursting |
| NONE/NONE |
Neither posting nor bursting |
| POST/NONE |
Posting but not bursting |
|
| CPU-To-PCI Write Buffer |
When Enabled, the CPU can write up to four dwords
of data to the PCI write buffer before the CPU must wait for the PCI bus cycles to finish. When Disabled, the CPU must wait after each write cycle until the PCI
bus signals that it is ready to receive more data. |
| CPU-To-PCI Write Post |
When this field is Enabled, writes from the CPU to
the PCI bus are buffered, to compensate for the speed differences between the CPU and the PCI bus. When Disabled, the writes are not buffered and the CPU must
wait until the write is complete before starting another write cycle. |
| CPU Warning Temperature |
Select the combination of lower and upper limits
for the CPU temperature. If the CPU temperature extends beyond either limit, any warning mechanism programmed into your system will be activated. |
| CPU/PCI Write Phase |
Determines the number of clock signals between the
address and data phases of the CPU-master-to-PCI-slave writes. |
| CPUFAN Off in Suspend |
When Enabled, the CPU fan turns off during Suspend
mode. |
| CRT Power Down |
When Enabled, the CRT powers down when the system
enters a Green mode. |
| CRT Sleep |
Determines the manner in which the monitor is
blanked. |
| Current CPU Temperature |
This field displays the current CPU temperature, if
your computer contains a monitoring system. |
| Current CPUFAN 1/2/3 Speed |
These fields display the current speed of up to
three CPU fans, if your computer contains a monitoring system. |
| Current System Temperature |
This field displays the current system temperature,
if your computer contains a monitoring system. |
| D |
| Date |
The BIOS determines the day of the week from the
other date information; this field is for information only.
Press the right or left arrow key to move to the desired field (date, month, year). Press the PgUp or PgDn key to increment the setting, or type the desired value
into the field. |
| Day of Month Alarm |
Select a date in the month. Select 0 (zero) if you
prefer to set a weekly alarm. SIS5597 |
| Daylight Saving |
When enabled, this parameter adds one hour to the
clock when daylight-saving time begins. It also subtracts one hour when standard time returns. |
| Delayed Transaction |
The chipset has an embedded 32-bit posted write
buffer to support delay transactions cycles. Select Enabled to support compliance with PCI specification version 2.1. |
| Dirty pin selection |
When Combine is selected in the Tag/Dirty Implement
field, you can choose whether the dirty data pin is I/O, for bidirectional input/output, or IN, for input only. |
| DMA Clock |
This item allows you to set the speed of Direct
Memory Access (DMA) at either equal to or one-half of the SYSCLK (system clock signal) speed. While speed is always desirable, choosing the higher setting may
prove to be too fast for some components. |
| DMA n Assigned to |
When resources are controlled manually, assign each
system DMA channel as one of the following types:
| Legacy ISA: |
Devices compliant with the original PC AT bus specification, requiring a
specific DMA channel |
| PCI/ISA PnP: |
Devices compliant with the Plug and Play standard, whether designed for PCI
or ISA bus architecture. |
|
| Doze Mode |
After the selected period of system inactivity, the
CPU clock runs at slower speed while all other devices still operate at full speed. |
| Doze Speed (div by) |
Select a divisor to reduce the CPU speed during
Doze mode to a fraction of the full CPU speed. |
| Doze Timer |
After the selected period of system inactivity, the
CPU clock runs at slower speed while all other devices still operate at full speed. |
| Doze Timer Select |
Select the timeout period (period of system
inactivity) after which the system enters Doze mode. |
| DRAM Auto Configuration |
The system board designer must select the proper
value for this field, according to the specifications of the installed DRAM chips. When Disabled, you can select the DRAM timing type. |
| DRAM Data Integrity Mode |
Select Parity or ECC (error-correcting code),
according to the type of installed DRAM. |
| DRAM ECC/PARITY Select |
Set this option according to the type of DRAM
installed in your system: error-correcting code (ECC) or parity (default). |
| DRAM Enhanced Paging |
When Enabled, the chipset keeps the page open until
a page/row miss. When Disabled, the chipset uses additional information to keep the DRAM page open when the host may be "right back." |
| DRAM Fast Leadoff |
Select Enabled to shorten the leadoff cycles and
optimize performance. |
| DRAM Last Write to CAS# |
Select the number of cycles elapse between the last
data signal and CAS# asserted. This period is the setup time for the CAS signal. |
| DRAM Leadoff Timing |
Select the combination of CPU clocks the DRAM on
your board requires before each read from or write to the memory. Changing the value from the setting determined by the board designer for the installed DRAM may
cause memory errors. |
| DRAM Page Idle Timer |
Select the amount of time in HCLKs that the DRAM
controller waits to close a DRAM page after the CPU becomes idle. |
| DRAM Page Open Policy |
When Disabled, the page open register is cleared
and the corresponding memory page is closed. When Enabled, the page remains open, even when there are no requests to service. |
| DRAM Posted Write |
See DRAM Posted Write Buffer, next. |
| DRAM Posted Write Buffer |
The chipset maintains its own internal buffer for
DRAM writes. When this buffer is Enabled, CPU write cycles to DRAM are posted to the buffer, so the CPU can start another write cycle before the DRAM finishes its
cycle. |
| DRAM R/W Leadoff Timing |
Select the combination of CPU clocks the DRAM on
your board requires before each read from or write to the memory. Changing the value from the setting determined by the board designer for the installed DRAM may
cause memory errors. |
| DRAM RAS Only Refresh |
An alternate to CAS-before-RAS refresh. Leave
Disabled unless your DRAM requires this older method of refresh generation. |
| DRAM RAS# Precharge Time |
Select the number of CPU clocks allocated for the
Row Address Strobe (RAS#) signal to accumulate its charge before the DRAM is refreshed. If insufficient time is allowed, refresh may be incomplete and data lost. |
| DRAM RAS# Pulse Width |
The system designer must select the number of CPU
clock cycles allotted for the RAS pulse refresh, according to DRAM specifications. |
| DRAM Read Burst (B/E/F) |
Set the timing for burst-mode reads from DRAM. The
lower the timing numbers, the faster the system addresses memory. |
| DRAM Read Burst (EDO/FPM) |
Sets the timing for reads from EDO (Extended Data
Output) or FPM (Fast Page Mode) memory. The lower the timing numbers, the faster the system addresses memory. Selecting timing numbers lower than the installed
DRAM is able to support can result in memory errors. |
| DRAM Read Prefetch Buffer |
Each time there is a memory access request, a
preprogrammed number of local bus clock signals is counted down. When the count reaches zero, if the number of filled posted write buffer slots is at or above a
predetermined threshold value, the memory request priority is raised. This mechanism is used to control memory access latency. |
| DRAM Read Wait State |
These DRAM timing numbers are the pattern of cycles
the CPU uses to read data from the main memory. The system board designer must select the proper combination, depending on the memory size and access speed of the
DRAMs. Do not reset this option from its default. |
| DRAM Read/Write Timing |
Your system designer should select the timing that
the system uses when reading from and writing to DRAM. Do not reset from the factory default value. |
| DRAM Read-Around-Write |
DRAM optimization feature: If a memory read is
addressed to a location whose latest write is being held in a buffer before being written to memory, the read is satisfied through the buffer contents, and the
read is not sent to the DRAM. |
| DRAM Refresh Period |
Select the period required to refresh the DRAMs,
according to DRAM specifications. |
| DRAM Refresh Queue |
Enabled permits queuing up to four DRAM refresh
requests, so DRAM can refresh at optimal times. Disabled makes all refreshes priority requests. Installed DRAM must support this feature; most do. |
| DRAM Refresh Rate |
Select the period required to refresh the DRAMs,
according to DRAM specifications. |
| DRAM Refresh Stagger By |
Select the number of clock ticks (0-7) between
refreshing rows in the memory array. Selecting 0 refreshes all rows at once. |
| DRAM R/W Leadoff Timing |
Select the combination of CPU clocks the DRAM on
your board requires before each read from or write to the memory. Changing the value from the setting determined by the board designer for the installed DRAM may
cause memory errors. |
| DRAM Slow Refresh |
The default DRAM refresh request signal occurs
every 15 µs. A 16-bit ISA bus master may activate a refresh request when it has bus ownership. Selecting a slow refresh period here specifies the timing of the
refresh request signal from an ISA master. |
| DRAM Speculative Leadoff |
A read request from the CPU to the DRAM controller
includes the memory address of the desired data. When Enabled, Speculative Leadoff lets the DRAM controller pass the read command to memory slightly before it has
fully decoded the address, thus speeding up the read process. |
| DRAM Speed Selection |
The value in this field must correspond to the
speed of the DRAM installed in your system. DO NOT change the default setting of this field, as determined by the system board manufacturer for the installed
DRAM. This value is access speed, so a lower value means a faster system. |
| DRAM Timing |
The value in this field depends on performance
parameters of the installed memory chips (DRAM). Do not change the value from the factory setting unless you install new memory that has a different performance
rating than the original DRAMs. |
| DRAM Timing Control |
This allows you to determine the type of timing the
system uses when reading or writing to DRAM. Selections are Fast, Fastest, Normal (default) and Slow.
This field provides an alternative method of selecting DRAM timing. Again, the selected value must be set by the board designer, according to specifications of
the installed DRAM and other board components. Turbo mode reduces CAS access time by 1 clock tick. VP2 |
| DRAM to PCI RSLP |
When Enabled, the chipset permits prefetching of
two lines of data from system memory to the PCI bus. |
DRAM Write Burst (B/E/F)
DRAM Write Burst Timing |
Sets the timing for burst-mode writes from DRAM.
The lower the timing numbers, the faster the system addresses memory. Selecting timing numbers lower than the installed DRAM is able to support can result in
memory errors. |
| DRAM Write Wait State |
The system board designer may elect to insert a
wait state into the DRAM write cycle, if necessary. |
| DREQ6 PIN as |
This field lets the board designer invoke a
software suspend routine by toggling the DREQ6 signal. Select Suspend SW only if your board has such a feature. |
Drive A
Drive B |
Select the correct specifications for the diskette
drive(s) installed in the computer.
| None |
No diskette drive installed |
| 360K, 5.25 in |
5-1/4 inch PC-type standard drive; 360 kilobyte capacity |
| 1.2M, 5.25 in |
5-1/4 inch AT-type high-density drive; 1.2 megabyte capacity |
| 720K, 3.5 in |
3-1/2 inch double-sided drive; 720 kilobyte capacity |
| 1.44M, 3.5 in |
3-1/2 inch double-sided drive; 1.44 megabyte capacity |
| 2.88M, 3.5 in |
3-1/2 inch double-sided drive; 2.88 megabyte capacity |
|
| Drive NA before BRDY |
When Enabled, the NA signal is driven for one clock
before the last BRDY# of every cycle for read/write hit cycles, thus generating ADS# in the next cycle after BRDY#, eliminating one dead cycle. |
| DRQ Detection |
When Enabled, any activity on a DRQ signal line
wakes up the system or resets the inactivity timer. |
| Duplex Select |
In an infrared port mode, this field appears.
Full-duplex mode permits simultaneous two-direction transmission. Half-duplex mode permits transmission in one direction only at a time. Select the value required
by the IR device connected to the IR port. |
| E |
| ECP Mode Use DMA |
Select a DMA channel for the port. |
| EDO CASx# MA Wait State |
The board designer may elect to insert one
additional wait state before the assertion of the first CASx# for page hit cycles, thus allowing one additional clock of MA setup time to the CASx# for the
leadoff page hit cycle. Do not change from the manufacturer's default unless you are getting memory addressing errors. This field applies only if EDO DRAM is
installed in the system. |
| EDO Back-to-Back Timing |
Select the number of timer ticks required for
back-to-back accesses, according to the specifications of installed EDO DRAM. SIS5571 |
| EDO DRAM Read Burst |
Set the timing for burst-mode reads from DRAM. The
lower the timing numbers, the faster the system addresses memory. This field applies only if EDO DRAM is installed in the system. |
| EDO DRAM Speed Selection |
The value in this field must correspond to the
speed of the DRAM installed in your system. DO NOT change the default setting of this field, as determined by the system board manufacturer for the installed
DRAM. This value is access speed, so a lower value means a faster system. This field applies only if EDO DRAM is installed in the system. |
| EDO DRAM Write Burst |
Set the timing for burst-mode writes from DRAM. The
lower the timing numbers, the faster the system addresses memory. This field applies only if EDO DRAM is installed in the system. |
| EDO RASx# Wait State |
The board designer may elect to insert one
additional wait state before RAS# is asserted for row misses, thus allowing one additional MAX[13:0] setup time to RASx# assertion. This field applies only if EDO
DRAM is installed in the system. |
| EDO RAS# Precharge Time |
The precharge time is the number of cycles it takes
for the RAS to accumulate its charge before DRAM refresh. If insufficient time is allowed, refresh may be incomplete and the DRAM may fail to retain data. This
field applies only if EDO DRAM is installed in the system. |
| EDO RAS# to CAS# Delay |
This field applies only if EDO DRAM is installed
in the system. It lets you insert a timing delay between the CAS and RAS strobe signals, used when DRAM is written to, read from, or refreshed. Disabled gives
faster performance; and Enabled gives more stable performance.
EDO is short for Extended Data Output. EDO DRAM is faster than conventional DRAM if the cache controller in the system supports pipeline burst transfer mode.
Unlike conventional DRAM, which only allows one byte to be read at a time, EDO DRAM can copy an entire block of memory to its internal cache. While the processor
is accessing this cache, the memory can collect a new block to send. |
| EDO Read WS |
Select the correct cycle timing combination for the
system board design and EDO DRAM specifications. |
| Enhanced Memory Write |
Select Enabled or Disabled for the Memory Write and
Invalidate command on the PCI bus. This field must be Disabled if cache size is 512 KB and the tag address is 8 bits. |
| Enhanced Page Mode |
Select Enabled or Disabled, according to DRAM
specifications. |
| EPP Version |
Select EPP port type 1.7 or 1.9. |
| Extended CPU-PIIX4 PHLDA# |
When Enabled, the system controller adds one clock
signal to the length of time the PHLDA# signal is active under two conditions:
During the address phase at the beginning of a PCI read/write transaction
Following the address phase of a CPU LOCK cycle
When this field is Enabled, the Passive Release and Delayed Transaction fields should be Enabled. |
| Extended Read-Around-Write |
When Enabled, reads can bypass writes within the
82450GX memory interface components), provided their addresses do not match. |
| External Cache |
Cache memory is additional memory that is much
faster than conventional DRAM (system memory). Most, but not all, modern PCs have additional (external) cache memory. When the CPU requests data, the system
transfers the requested data from the main DRAM into cache memory, for even faster access by the CPU. |
| Extra AT Cycle WS |
Select Enabled to insert one wait state in the
standard AT bus cycle. Normally used when Legacy peripherals require additional response time. |
| F |
| Fast AT Cycle |
Select Enabled to shorten AT bus cycles by one
ATCLK signal. |
| Fast Back-to-Back |
When Enabled, consecutive write cycles targeted to
the same slave become fast back-to-back on the PCI bus. |
| Fast DRAM Refresh |
The cache DRAM controller offers two refresh modes,
Normal and Hidden. In both modes, CAS takes place before RAS but the Normal mode requires a CPU cycle for each. On the other hand, a cycle is eliminated by
"hiding" the CAS refresh in Hidden mode. Not only is the Hidden mode faster and more efficient, but it also allows the CPU to maintain the status of the cache
even if the system goes into Suspend power-management mode. |
| Fast EDO Leadoff |
Select Enabled only for EDO DRAMs in either a
synchronous cache or a cacheless system. It causes a 1-HCLK pull-in for all read leadoff latencies for EDO DRAMs (i.e., page hits, page misses, and row misses).
Select Disabled if any of the DRAM rows are populated with FPM DRAMs. |
| Fast EDO Path Select |
When Enabled, a fast path is selected for
CPU-to-DRAM read cycles for the leadoff, providing the system contains EDO DRAMs. It causes a 1-HCLK pull-in for all read leadoff latencies (i.e., page hits, page
misses, and row misses). |
| Fast MA to RAS# Delay [CLK] |
The values in this field are set by the system
board designer, depending on the DRAM installed. Do not change the values in this field unless you change specifications of the installed DRAM or the installed
CPU. |
| Fast RAS to CAS Delay |
When DRAM is refreshed, both rows and columns are
addressed separately. This setup item allows you to determine the timing of the transition from RAS to Column Address Strobe (CAS). |
| FDD Detection |
When Enabled, any floppy drive activity wakes up the
system or resets the inactivity timer. |
| Floppy 3 Mode Support |
When Enabled, the BIOS supports a type of 3.5-in
diskette drive that can read 720-KB, 1.2-MB, and 1.44-MB diskettes. |
| G |
| Gate A20 Option |
Gate A20 refers to the way the system addresses
memory above 1 MB (extended memory). When set to Fast, the system chipset controls Gate A20. When set to Normal, a pin in the keyboard controller controls Gate
A20. Setting Gate A20 to Fast improves system speed, particularly with OS/2 and Windows. |
| Global Standby Timer |
After the selected period of inactivity for the
entire system, the system enters Standby mode. |
| Global Suspend Timer |
After the selected period of global Standby mode,
the system enters Suspend mode. |
| GPI05 Power Up Control |
When you select Enabled, a signal from General
Purpose Input 05 returns the system to Full On state. SIS5597 |
| Graphic Posted Write Buff |
The chipset maintains its own internal buffer for
graphics memory writes. When this buffer is Enabled, CPU write cycles to graphics memory are posted to the buffer, so the CPU can start another write cycle before
the graphics memory finishes its cycle. |
| Guaranteed Access Time |
When Enabled, Guaranteed Access Time mode is
enabled, so a CHRDY time-out of 2.5 (s is guaranteed for the ISA bus. When Disabled, an ISA bus master is granted the ISA bus and then the SIO chip arbitrates for
the PCI bus. |
| H |
| Halt On |
During the power-on self-test (POST), the computer
stops if the BIOS detects a hardware error. You can tell the BIOS to ignore certain errors during POST and continue the boot-up process. These are the selections:
| No errors |
POST does not stop for any errors. |
| All errors |
If the BIOS detects any non-fatal error, POST stops and prompts you to take corrective
action. |
| All, But Keyboard |
POST does not stop for a keyboard error, but stops for all other errors. |
| All, But Diskette |
POST does not stop for diskette drive errors, but stops for all other errors. |
| All, But Disk/Key |
POST does not stop for a keyboard or disk error, but stops for all other errors. |
|
| Hard Disks |
The BIOS supports up to four IDE drives. This
section does not show information about other IDE devices, such as a CD-ROM drive, or about other hard drive types, such as SCSI drives.
NOTE: We recommend that you select type AUTO for all drives.
The BIOS can automatically detect the specifications and optimal operating mode of almost all IDE hard drives. When you select type AUTO for a hard drive, the
BIOS detects its specifications during POST, every time the system boots.
If you do not want to select drive type AUTO, other methods of selecting the drive type are available:
- Match the specifications of your installed IDE hard drive(s) with the preprogrammed values for drive types 1 through 45.
- Select USER and enter values into each drive parameter field.
- Use the IDE HDD AUTO DETECTION function in Setup.
Here is a brief explanation of drive specifications:
- Type: The BIOS contains a table of pre-defined drive types. Each defined drive type has a specified number of cylinders, number of heads, write
precompensation factor, landing zone, and number of sectors. Drives whose specifications do not accommodate any pre-defined type are classified as type USER.
- Size: Disk drive capacity (approximate). Note that this size is usually slightly greater than the size of a formatted disk given by a disk-checking program.
- Cyls: Number of cylinders
- Head: Number of heads
- Precomp: Write precompensation cylinder
- Landz: Landing zone
- Sector: Number of sectors
- Mode: Auto, Normal, large, or LBA
- Auto: The BIOS automatically determines the optimal mode.
- Normal: Maximum number of cylinders, heads, and sectors supported are 1024, 16, and 63.
- Large: For drives that do not support LBA and have more than 1024 cylinders. Applicable to only a few drives.
- LBA (Logical Block Addressing): During drive accesses, the IDE controller transforms the data address described by sector, head, and cylinder number into a
physical block address, significantly improving data transfer rates. For drives with greater than 1024 cylinders.
|
| HDD Detection |
When Enabled, any hard drive activity wakes up the
system or resets the inactivity timer. |
| HDD Off After |
After the selected period of drive inactivity, the
hard disk drive powers down while all other devices remain active. Selecting Suspend tells the drive to power down immediately. |
| HDD Power Down |
After the selected period of drive inactivity, the
hard disk drive powers down while all other devices remain active. |
| HDD Standby Timer |
After the selected period of drive inactivity, the
hard disk drive powers down. Its timing is separate from other PM modes listed above. |
| Hidden Refresh |
When Disabled, DRAM is refreshed by IBM AT
methodology, using a CPU cycles for each refresh. When hidden refresh is Enabled, the DRAM controller seeks the most opportune moment for a refresh, regardless of
CPU cycles, with least disruption of system activity and least performance penalty. Hidden refresh is faster and more efficient, and it also allows the CPU to
maintain the status of the DRAM even if the system goes into a power management "suspend" mode. |
| Host-to-PCI Bridge Retry |
When Enabled, the peripherals controller (PIIX4)
retries, without initiating a delayed transaction, CPU-initiated nonLOCK# PCI cycles. No delayed transactions to the controller may be currently pending and
passive release must be active. When this field is Enabled, the Passive Release and Delayed Transaction fields should be Enabled. |
| Hot Key Power Off |
Select Enabled if your system has a hot key for soft
power off. SIS5597 |
| I |
| I/O Recovery Time |
The peripheral controller insert a minimum of 2 bus
clock (BCLK) delays between back-to-back 8- or 16-bit ISA I/O cycles issued from the PCI master. If a greater delay is desired, select 4, 8, 12 clocks. |
| IDE 32-bit Transfer Mode |
The IDE interface in the integrated peripherals
controller supports 32-bit data transfers. Select enabled only if your IDE hard drives can also support 32-bit transfer mode. |
| IDE Buffer for DOS & Win |
Select Enabled to increase throughput to and from
IDE devices by using the on-chip read-ahead and posted-write IDE buffers. Note that use of the buffers may cause some slow IDE devices to be even slower. When in
doubt, experiment with this setting for optimal performance and data integrity. |
| IDE Burst Mode |
Selecting Enabled reduces latency between each
drive read/write cycle, but may cause instability in IDE subsystems that cannot support such fast performance. If you are getting disk drive errors, try setting
this value to Disabled. This field does not appear when the Internal PCI/IDE field is Disabled. |
| IDE Data Port Post Write |
Selecting Enabled speeds up processing of drive
reads and writes, but may cause instability in IDE subsystems that cannot support such fast performance. If you are getting disk drive errors, try setting this
value to Disabled. |
| IDE HDD Block Mode |
Block mode is also called block transfer, multiple
commands, or multiple sector read/write. If your IDE hard drive supports block mode (most new drives do), select Enabled for automatic detection of the optimal
number of block read/writes per sector the drive can support. |
| IDE Prefetch Mode |
The onboard IDE drive interfaces supports IDE
prefetching, for faster drive accesses. If you install a primary and/or secondary add-in IDE interface, set this field to Disabled if the interface does not
support prefetching. |
| IDE Primary/ Secondary Master/Slave PIO |
The four IDE PIO (Programmed Input/Output) fields
let you set a PIO mode (0-4) for each of the four IDE devices that the onboard IDE interface supports. Modes 0 through 4 provide successively increased
performance. In Auto mode, the system automatically determines the best mode for each device. |
| IDE Primary/ Secondary Master/Slave UDMA |
UDMA (Ultra DMA) is a DMA data transfer protocol
that utilizes ATA commands and the ATA bus to allow DMA commands to transfer data at a maximum burst rate of 33 MB/s. When you select Auto in the four IDE UDMA
fields (for each of up to four IDE devices that the internal PCI IDE interface supports), the system automatically determines the optimal data transfer rate for
each IDE device. |
| IDE Second Channel Control |
The chipset contains a PCI IDE interface with
support for two IDE channels. Select Enabled to activate the secondary on-chip IDE interface. Select Disabled to deactivate this interface, if you install a
secondary add-in IDE interface. |
| In Order Queue Depth |
Select 8 to track up to eight pipelined bus
transactions. |
| IN0-IN6 (V) |
These fields display the current voltage of up to
seven voltage input lines, if your computer contains a monitoring system. |
| Inactive Timer Select |
Select the timeout period (period of system
inactivity) after which the system enters Inactive mode. This period should be longer than the period selected for Standby mode. |
Init AGP Display First
Init Display First |
Initialize the AGP video display before
initializing any other display device on the system. Thus the AGP display becomes the primary display. |
| Internal PCI/IDE |
The chipset contains a PCI IDE interface that
supports two IDE channels: Primary (IRQ 14) and Secondary (IRQ 15). Each channel supports two IDE devices, so the system is capable of supporting a total of four
IDE devices. Select Primary, Secondary, or Both to activate chipset IDE interface(s) installed on your system board. |
InfraRed Duplex Type
IR Function Duplex |
Select the value required by the IR device
connected to the IR port. Full-duplex mode permits simultaneous two-direction transmission. Half-duplex mode permits transmission in one direction only at a time.
If no infrared port is present in the system, select Disabled. |
| IR Duplex Mode |
Select the value required by the IR device
connected to the IR port. Full-duplex mode permits simultaneous two-direction transmission. Half-duplex mode permits transmission in one direction only at a time.
If no infrared port is present in the system, select Disabled. |
| IRQ n Assigned to |
When resources are controlled manually, assign each
system interrupt as one of the following types, depending on the type of device using the interrupt:
| Legacy ISA: |
Devices compliant with the original PC AT bus specification, requiring a
specific interrupt (such as IRQ4 for serial port 1) |
| PCI/ISA PnP: |
Devices compliant with the Plug and Play standard, whether designed for PCI
or ISA bus architecture. |
|
IRQ8 Break Suspend
IRQ8 Break [Event From] Suspend |
You can Enable or Disable monitoring of IRQ8 (the
Real Time Clock) so it does not awaken the system from Suspend mode. |
| IRQ8 Clock Event.. |
You can turn On or Off monitoring of IRQ8 (the Real
Time Clock) so it does not awaken the system from Suspend mode. |
| IRQn Detection |
When Enabled, any activity from the selected IRQ
(IRQ3-IRQ12; IRQ14-IRQ15) wakes up the system or resets the inactivity timer. |
| IRRX Mode Select |
This field appears only when IrDA mode 1.1 is
selected for UART2 Mode. The value in this field depends on the type of transceiver module used for IrDA mode 1.1 (called fast IR). One type has a mode pin (IRMODE)
and the other type has a second receive data channel (IRRX3). Do not change the factory default value of this field unless your IR peripheral documentation
explicitly states a mode requirement for fast IR, or if you are having a problem configuring your IR peripheral in fast IR mode. |
| ISA Bus Clock |
You can set the speed of the AT bus at one-third or
one-fourth of the CPU clock speed. |
ISA Bus Clock Option
ISA Bus Clock Frequency |
The ISA bus clock speed is the speed at which the
CPU communicates with the AT bus (expansion bus). The speed is measured as a fraction of PCICLKI, the timing signal of the PCI bus. Experiment with setting the
bus timing to a lower speed (for example, from PCICLKI/3 to PCICLKI/4) if an installed expansion peripheral has performance problems. |
| ISA Clock |
You can set the speed of the AT bus at one-third or
one-fourth of the CPU clock speed. |
| ISA I/O Recovery |
The CPU and local bus are much faster than industry
standard architecture (ISA) input/output (I/O) bus. Select Enabled to allow additional time for I/O devices to respond to the system. Otherwise, data could be
lost. If all your I/O devices are capable of fast I/O, selecting Disabled can speed up processing. |
| ISA Line Buffer |
The PCI to ISA Bridge has an 8-byte bidirectional
line buffer for ISA or DMA bus master memory reads from or writes to the PCI bus. When Enabled, an ISA or DMA bus master can prefetch two doublewords to the line
buffer for a read cycle. |
| J |
| Joystick Function |
If your system has a joystick peripheral, select
Enable. |
| K |
| KBC input clock |
The system designer must select the correct
frequency for the keyboard controller input clock. Do not change this value from the default value. |
| Keyboard Controller Clock |
The keyboard controller clock speed is the speed at
which the CPU communicates with the keyboard controller. Depending on the specifications of the installed keyboard controller, the speed may be fixed at 7.16 MHz
or may be a fraction of PCICLKI, the timing signal of the PCI bus. |
| Keyboard Emulation |
When Enabled, Gate A20 and software reset emulation
for an external keyboard controller are enabled. Be sure to make the setting of this field agree with the setting of the Gate A20 Option field in the BIOS
Features Setup screen (Fast = Enabled; Normal = Disabled). |
| Keyboard Resume |
When Disabled, keyboard activity does NOT awaken the
system from Suspend mode. VP2 |
| L |
| L1 Cache Policy |
Write-Through means that memory is updated with
data held in the cache whenever the CPU issues a write cycle. On the other hand, Write-Back causes memory to be updated only under certain conditions, such as
read requests to the memory whose contents are currently in the cache. Write-Back allows the CPU to operate with fewer interruptions, increasing its efficiency. |
| L2 Cache Cacheable Size |
Select 512 MB only if your system RAM is greater
than 64 MB. |
| L2 Cache Write Policy |
In addition to the Write-Back and Write-Through
options, the L2 cache also offers Adaptive WB1 and Adaptive WB2. Both adaptive write-back modes try to reduce the disadvantages of both the write-through and
write-back policies. The system designer must select the optimal cache write policy, according to the SRAM specifications. |
| L2 to PCI Read Buffer |
The chipset maintains its own internal buffer for
external-cache-to-PCI writes. When this buffer is Enabled, external cache write cycles to the PCI bus are posted to the buffer, so the each device can complete
its cycles without waiting for the other. |
| L2 (WB) Tag Bit Length |
The system uses tag bits to determine the status of
data in the cache. Set this field to match the specifications (7 or 8 bits) of the system external cache. |
| LCD&CRT |
Select your video display device:
| LCD |
Notebook liquid crystal display |
| CRT |
Auxiliary monitor |
| AUTO |
The BIOS auto senses the device in use (this value lets you switch between devices
without being left "in the dark"). |
| LCD&CRT |
Display on both devices |
|
| LDEV Detection |
When Enabled, any activity on the LDEV signal line
wakes up the system or resets the inactivity timer. |
| Linear Merge |
When Enabled, only consecutive linear addresses can
be merged. |
| Linear Mode SRAM Support |
Select Enabled if your system contains a CPU that
requires linear mode (e.g., Cyrix M1/M2 CPU). |
| Local Memory 15-16M |
To increase performance, your system can map slower
device memory (usually a device is connected to the slower ISA bus) into much faster local bus memory. It does this by setting aside local memory and transferring
the start point from the device memory to the local memory. Use this setting to enable/disable this capability. It is Enabled by default. |
| LREQ Detection |
When Enabled, any activity on the LREQ signal line
wakes up the system or resets the inactivity timer. |
| M |
| M1 Linear Burst Mode |
Select Enabled if your system contains a Cyrix M1
CPU. |
| MA Additional Wait State |
Selecting Enabled inserts an additional wait state
before the beginning of a memory read. The setting of this parameter depends on the board design. Do not change from the manufacturer's default unless you are
getting memory addressing errors. |
Master Mode Byte Swap
Master Byte Swap Control |
Select Enabled or Disabled. |
| Master Retry Timer |
This sets how many PCI clock signals the CPU master
attempts a PCI cycle before the cycle is unmasked (terminated). |
| Mem. Drive Str. (MA/RAS) |
(Memory Address Drive Strength) This field controls
the strength of the output buffers driving the MA and BA1 pins (first value) and SRASx#, SCASx#, MWEx#, and CKEx pins (second value). |
| Memory |
You cannot change any values in the Memory fields;
they are only for your information. The fields show the total installed random access memory (RAM) and amounts allocated to base memory, extended memory, and
other (high) memory. RAM is counted in kilobytes (KB: approximately one thousand bytes) and megabytes (MB: approximately one million bytes). RAM is the computer's
working memory, where the computer stores programs and data currently being used, so they are accessible to the CPU. Modern personal computers may contain up to
64 MB, 128 MB, or more.
| Base Memory |
Typically 640 KB. Also called conventional memory. The DOS operating system and
conventional applications use this area. |
| Extended Memory |
Above the 1-MB boundary. Early IBM personal computers could not use memory above 1 MB,
but current PCs and their software can use extended memory. |
| Other Memory |
Between 640 KB and 1 MB; often called High memory. DOS may load
terminate-and-stay-resident (TSR) programs, such as device drivers, in this area, to free as much conventional memory as possible for applications. Lines in
your CONFIG.SYS file that start with LOADHIGH load programs into high memory. |
|
| Memory Hole at 15M Addr. |
You can reserve this area of system memory for ISA
adapter ROM. When this area is reserved, it cannot be cached. The user information of peripherals that need to use this area of system memory usually discusses
their memory requirements. |
| Memory Hole at 15M-16M |
You can reserve this area of system memory for ISA
adapter ROM. When this area is reserved, it cannot be cached. The user information of peripherals that need to use this area of system memory usually discusses
their memory requirements. |
| Memory Parity Check |
Select Enabled if the DRAM chips in your system
support parity. |
| Memory Parity/ECC Check |
Select Enabled, Disabled, or Auto. In Auto mode,
the BIOS enables memory checking automatically when it detects the presence of ECC or parity DRAM. |
| MODEM Use IRQ |
Name the interrupt request (IRQ) line assigned to
the modem (if any) on your system. Activity of the selected IRQ always awakens the system. |
| Monitor Event in Full On Mode |
In On mode, the Standby timer (Standby Timer
Select, 2-256 min) starts counting if no activity is taking place and the programmable time-out period has expired. When you Enabled monitoring (checking) of a
device listed under this category, it is included in the list of devices that the system monitors during the PM timers count-down. When you Disable monitoring
(checking) of a device listed under this category, activity does not interrupt the PM timers count-down. |
| Month Alarm |
Select a month (1-12) or NA if you want the alarm
active during all months. SIS5597 |
| MPS Version Control for OS |
The BIOS supports versions 1.1 and 1.4 of the Intel
multiprocessor specification. Select the version supported by the operating system running on this computer. |
| MPU-401 Configuration |
Select Enabled to configure the MPU-401 interface. |
| MPU-401 I/O Base Address |
Select a base I/O address for the MPU-401 interface |
| N |
| NA# Enable |
Selecting Enabled permits pipelining, in which the
chipset signals the CPU for a new memory address before all data transfers for the current cycle are complete, resulting in faster performance. |
| O |
| Onboard Audio Chip |
Select Enabled to use the audio capabilities of
your system. Most of the following fields do not appear when this field is Disabled. |
| Onboard FDC/FDD Controller |
Select Enabled if your system has a floppy disk
controller (FDC) installed on the system board and you wish to use it. If you install an add-in FDC or the system has no floppy drive, select Disabled in this
field. |
| Onboard IDE Controller |
The chipset contains a PCI IDE interface with
support for two IDE channels. Select Primary to activate the only primary IDE interface, if you install an add-in secondary interface. Select Both to activate
both interfaces, or Disabled to deactivate both interfaces, if you install both a primary and a secondary add-in IDE interface. |
| Onboard Parallel Port |
Select a logical LPT port address and corresponding
interrupt for the physical parallel port. |
| Onboard PCI SCSI Chip |
Select Enabled if your system contains a built-in
PCI SCSI controller. |
| Onboard Serial Ports (1/2, A/B) |
Select a logical COM port name and matching address
for the first and second serial ports. Select an address and corresponding interrupt for the first and second serial ports. |
| Onboard UART 1/2 |
See Onboard Serial Ports, above. |
| Onboard UART 1/2 Mode |
See UART 2 Mode. Available modes apply to selected
serial port. |
| On-Chip IDE Controller |
The integrated peripheral controller contains a IDE
interface with support for two IDE channels. Select Enabled to activate the IDE interface. |
| On-Chip IDE First/Second Channel |
The chipset contains a PCI IDE interface with
support for two IDE channels. Select Enabled to activate the first and/or second IDE interface. Select Disabled to deactivate an interface, if you install a
primary and/or secondary add-in IDE interface. |
| On-Chip Local Bus IDE |
The chipset contains an enhanced IDE interface with
two IDE channels. Because each channel supports two IDE devices, the system supports a total of four IDE devices. If your system board has one or two IDE
connectors, this option should be Enabled. If you install an add-in IDE interface, disable one or both on-chip IDE channels. |
| On-Chip PCI IDE |
The chipset contains a PCI IDE interface with
support for two IDE channels. Select Enabled to activate the IDE interface. Select Disabled to deactivate this interface, if you install a primary and/or
secondary add-in IDE interface. You can disable the second IDE interface separately in the IDE Second Channel Control field in the BIOS Features Setup screen. |
| On-Chip Primary/ Secondary PCI IDE |
The integrated peripheral controller contains an
IDE interface with support for two IDE channels. Select Enabled to activate each channel separately. |
| OS Select for DRAM > 64MB |
Select OS2 only if you are running OS/2 operating
system with greater than 64 MB of RAM on your system. |
| P |
| Page Hit Control |
This function is used for testing the controller. |
| Page Mode Read WS |
Select the correct cycle timing combination for the
system board design and Page Mode DRAM specifications. |
| Parallel Port EPP Type |
Select EPP port type 1.7 or 1.9, as required by your
parallel peripheral. |
| Parallel Port Mode |
Select an operating mode for the onboard parallel
(printer) port. Select Normal, Compatible, or SPP unless you are certain your hardware and software both support one of the other available modes. For information
about parallel port modes, see http://www.fapo.com/1284int.htm |
| Passive Release |
When Enabled, CPU to PCI bus accesses are allowed
during passive release. Otherwise, the arbiter only accepts another PCI master access to local DRAM. |
| PCI 2.1 Compliance |
Select Enabled to support compliance with PCI
specification version 2.1. |
| PCI Arbitration Mode |
The method by which the PCI bus determines which
bus master device gains access to the bus. Typically, the system manages or arbitrates access to the PCI bus on a first-come-first-served basis. When priority is
rotated, once a device gains control of the bus it is assigned the lowest priority and every other device is moved up one in the priority queue. |
| PCI Burst |
When Enabled, data transfers on the PCI bus, where
possible, make use of the high-performance PCI burst protocol, in which greater amounts of data are transferred at a single command. If the write transaction is a
burst transaction, the information goes into the write buffer and burst transfers are later performed on the PCI bus. If the transaction is not a burst, PCI write
occurs immediately (after a write buffer flush). VP2 |
| PCI Burst Write Combine |
When this option is Enabled, the chipset assembles
long PCI bursts from the data held in these buffers. |
| PCI CLK |
The system board designer selects whether the PCI
clock is tightly synchronized with the CPU clock or is asynchronous. |
| PCI Delayed Transaction |
The chipset has an embedded 32-bit posted write
buffer to support delay transactions cycles. Select Enabled to support compliance with PCI specification version 2.1. |
| PCI Dynamic Bursting |
When Enabled, every write transaction goes to the
write buffer. Burstable transactions then burst on the PCI bus and nonburstable transactions do not. VP2 |
Terms Information
AWARD BIOS SETTING and GENERAL TERMS INFORMATION