a-trend ATC-1425A Mainboard user's guide
Back to motherboard page
Home
SYSTEM FEATURES
: Supports all Intel, AMD, UMC, CYRIX, and IBM 486 CPU, including Am5x86-P75 and Cyrix 5x86.
: Flexible architecture to support 128/256/512KB Direct mapped cache scheme.
: Supports 4 stage power saving: On/Doze/Standby/Suspend.
: Supports L1/L2 Write back/Write through cache feature.
: Supports 72-pin dual type SIM modules.
: Memory configurations from 1MB up to 256M by using 256K/1M/4M/8M/16M/32M/64MB SIM module supported.
: Supports SMI/SMM/PMU/APM power controllers.
: Supports 2 x Enhanced 32-bit local bus IDE Mode 3,4 up to 4 IDE devices.
: Supports 1 FDC port, 2 serial ports(16550 fast UART compatible), 1 parallel port(EPP/ECP mode).
The on-board I/O can be "disable or enable" from the "BIOS SET UP", please refer to page 10 (CHIPSET FEATURES SET UP).
CHECK LIST OF THE PACKING
(The mainboard comes securely packed in a durable box and shipping carton).
Each mainboard containing:
Q'TY Description
1 Mainboard : ATC-1425A.
1 Diskette : Enhanced IDE driver (3.5").
1 Cable : Enhanced IDE connector.
1 Cable : F.D.D connector.
1 Cable : Serial port.
1 Cable : Serial/Parallel.
1 Manual : User`s manual.
If any of the above items is missing or damage, please contact the dealer from whom you purchased this mainboard. Inside the box, the mainboard is sandwiched between two sheets of sponge and packed in an anti-static bag.
NOTE : Leave the mainboard in its original packing until you are ready to install it.
INTEL/AMD/CYRIX CPU JUMPER
CPU Type settings
| CPU TYPE | JP22 | JP24 | JP25 | JP26 | JP27 | JP28 |
| P24T | 1-2 | open | 1-2 | open | 1-2 | 3-4 |
| P24D | 1-2 | 1-2 | 1-2 | 1-2 | 1-2 | 1-2,3-4 |
| S-SERIES | 1-2 | 2-3 | 2-3 | open | open | 3-4 |
| Enhanced Am486 | 1-2 | 1-2 | 1-2 | 1-2 | 1-2 | 1-2,3-4 |
| AMD486DXL(3.45V) | 2-3 | open | 2-3 | open | open | open |
| 486DX(5V) | open | 2-3 | 2-3 | open | open | open |
| 486SX | open | 2-3 | 2-3 | open | open | open |
| CYRIX CX486 | 1-2 | 1-2 | 2-3 | open | 2-3 | 2-3 |
| CYRIX M1-SC | 1-2 | 1-2 | 2-3 | 1-2 | 1-2 | 1-2,3-4 |
| CPU TYPE | JP29 | JP30 | JP31 | JP32 | JP33 | JP34 |
| P24T | 1-2 | 1-2,3-4 | 2-3 | open | 1-2 | 2-3 |
| P24D | open | 1-2,3-4 | 2-3 | 2-3 | 4-5 | 3-4 |
| S-SERIES | open | 1-2,3-4 | 2-3 | 1-2 | 4-5 | open |
| Enhanced Am486 | open | 1-2,3-4 | 2-3 | 2-3 | 4-5 | 3-4 |
| AMD486DXL(3.45V) | 3-4 | 1-2,3-4 | 4-5 | open | open | 1-2,3-4 |
| 486DX(5V) | open | 1-2,3-4 | open | open | open | 3-4 |
| 486SX | open | 2-3 | open | open | open | open |
| CYRIX CX486 | 2-3 | 1-2,3-4 | 1-2 | open | 2-3 | 3-4 |
| CYRIX M1SC | open | 1-2,3-4 | 2-3 | 2-3 | 4-5 | 3-4 |
The jumper setting for Am5x86-P75 (X5-133) is same as P24D, and set
J21 to "close".
The JP23 setting for AMD486DXL(3.45V) CPU please see following table;
for other CPUs please set JP23 to "1-2".
| JP23 |
| 486DX4 | 1-2 |
| 486DX2 | 2-3 |
CPU Speed setting
| CPU SPEED | JP14 | JP13 | JP12 |
| DX25/DX2-50/DX4-75 | OPEN | OPEN | OPEN |
| DX33/DX2-66/DX4-100 | OPEN | CLOSE | CLOSE |
| DX40/DX2-80/DX4-120 | OPEN | OPEN | CLOSE |
| DX50 | OPEN | CLOSE | OPEN |
Setting of CPU Voltage:
| CPU Voltage | JP34 | JP35 |
| 5V | 1-2 | open |
| 3.45V | 2-3 | 1-3,2-4 |
| 4V | 2-3 | 3-5,4-6 |
Other jumper setting
| JP10 | JP38 | J11 |
| Synchronous clock | 1-2 | Flash ROM | 1-2,5-6 | External Battery | 1-2 |
| Asynchronous clock | 2-3 | EPROM | 2-3,4-5 | Internal Battery | 2-3 |
| | | | | Clear CMOS | 3-4 |
SIM MODULES INSTALLATION
The SIS 486 PCI/ISA motherboard can be expanded from 1MB Up to 256MB by using 256K, 1MB,2MB,4MB 8MB,16MB,32MB and 64MB of 72-pin SIM module.
"Free Table" feature is offered for main memory configuration. The product works with one SIMM plugs into any SIMM sockets.
CACHE RAM INSTALLATION
This board can support cache memory from128K to 512K bytes with 32KX8, 64KX8 or 128KX8 types of cache RAM.
Cache Configuration Size
| Cache Size | TAG RAM(U22) | Cache RAM(U18-21) | JP17 | JP18 | JP19 | JP37 |
| 128K | 8KX8 | 32KX8 | 1-2 | 1-2 | 1-2 | 1-2,3-4 |
| 256K | 32KX8 | 64KX8 | 2-3 | 1-2 | 2-3 | 1-2,3-4 |
| 512K | 32KX8 | 128KX8 | 1-2 | 2-3 | 2-3 | 1-2,3-4 |
OTHER CONNECTORS
| Connector | Description |
| J40 | Reset. |
| J41 | HDD LED. |
| J42 | Turbo LED. |
| J43 | Turbo Switch. |
| J44 | Speaker Connector. |
| J45 | Keylock. |
AWARD BIOS SYSTEM CONFIGULATION SETUP
To enter SETUP, by pressing the <Del> key when the system is booting up. The following menu apppears:
ROM PCI/ISA BIOS (2A4IBA2H)CMOS SETUP UTILITYAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI CONFIGULATION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc: Quit | á â à ß :Select Item |
| F10: Save & Exit Setup | (Shift)F2: Change Color |
| Virus protection, Boot sequence ... |
Please select "STANDARD CMOS SETUP" to enter the next screen:
| Date (mm:dd:yy) : Mon, Jul 3 1995 | |
| Time(hh:mm:ss) : 14 : 16 : 1 | |
| HARD DISK TYPE SIZE | CYLS. HEADS PRECOMP LANDZONE SECTORS MODE |
| Primary Master :None 0 | 0 0 0 0 0 -------- |
| Primary Slave :None 0 | 0 0 0 0 0 -------- |
| Secondary Master :None 0 | 0 0 0 0 0 -------- |
| Secondary Slave :None 0 | 0 0 0 0 0 -------- |
| Drive A: 1.2M, 5.25 in | |
| Drive B: None | Base Memory : 640K |
| | Extended memory : 11264K |
| Video : EGA/VGA | Other Memory : 384K |
| Halt On: All Errors | ------------------------------------------------ |
| | Total Memory : 12288K |
| Esc : Quit á â à ß :Select Item | PU/PD/+/- : Modify |
| F1 : Help (Shift) F2: Change Color | |
ROM PCI/ISA BIOS (2A4IBA2H)CMOS SETUP UTILITYAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI CONFIGULATION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc: Quit | á â à ß :Select Item |
| F10: Save & Exit Setup | (Shift)F2: Change Color |
| Virus protection, Boot sequence ... |
ROM PCI/ISA BIOS (2A4IBA2H)BIOS FEATURES SETUPAWARD SOFTWARE , INC.
| Virus Warning | : Disabled | Video BIOS Shadow : Enabled |
| CPU Internal Cache | : Enabled | C8000-CFFFF Shadow : Disabled |
| External Cache | : Enabled | D0000-D7FFF Shadow : Disabled |
| Quick Power On Self Test | : Disabled | D8000-DFFFF Shadow : Disabled |
| Boot Sequence | : A, C | |
| Swap Floppy Drive | : Disabled | |
| Boot Up Floppy Seek | : Enabled | |
| Boot Up NumLock Status | : On | |
| Boot Up System Speed | : High | |
| Gate A20 Option | : Fast | |
| Typematic Rate Setting | : Disabled | |
| Typematic Rate (Chars/Sec) | : 6 | |
| Typematic Delay (Msec) | : 250 | |
| Security Option | : Setup | |
| | | Esc : Quit á â à ß :Select Item |
| | | F1 : Help U/PD/+/- : Modify |
| | | F5 : Old Values (Shift)F2:Color |
| | | F6 : Load BIOS Defaults |
| | | F7 : Load Setup Defaults |
ROM PCI/ISA BIOS (2A4IBA2H)CMOS SETUP UTILITYAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI CONFIGULATION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc: Quit | á â à ß :Select Item |
| F10: Save & Exit Setup | (Shift)F2:Change Color |
| At clock, DRAM timings .... |
ROM PCI/ISA BIOS (2A4IBA2H)CHIPSET FEATURES SETUPAWARD SOFTWARE, INC.
| Auto Configuration | : Enabled | Onboard 496B IDE Port | : Both |
| | | IDE 0 Master Mode | : Auto |
| ISA Bus Clock | : 7.159MHz | IDE 0 Slave Mode | : Auto |
| LBD# Sample Point | : End of T2 | IDE 1 Master Mode | : Auto |
| | | IDE 1 Slave Mode | : Auto |
| Cache Write Cycle | : 2 CCLK | IDE Prefetch Read Buffer | : Disable |
| Cache Burst Read Cycle | : 1 CCLK | IDE HDD Block Mode | : Enable |
| L2 Cache/DRAM Cycle WS | : 2 CCLK | | |
| | | Onboard FDC Control | : Enable |
| DRAM RAS to CAS Delay | : 3 CCLK | Onboard Serial Port 1 | : COM1/3F8H |
| DRAM Write Cycle | : 1 WS | Onboard Serial Port 2 | : COM2/2F8H |
| DRAM Write CAS Pulse | : 2 CCLK | Onboard Parallel Port | : 378H/IRQ7 |
| DRAM CAS Precharge Time | : 1 CCLK | Onboard Printer Mode | : Compatible |
| DRAM RAS to MA Delay | : 1 CCLK | | |
| DRAM Speed | : Faster | | |
| DRAM Slow Refresh | : Disable | Esc: Quit | á â à ß :Select Item |
| | | F1 : Help | PU/PD/+/- :Modify |
| CPU Burst Write | : Disabied | F5 : Old Values | (SHIFT)F2: Color |
| L2 Cache Policy | : Write Back | F6 : Load BIOS Defaults | |
| L2 Cache Tag Bits | : 8 bits | F7 : Load Setup Defaults | |
ROM PCI/ISA BIOS (2A4IBA2H)POWER MANAGEMENT SETUPAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI CONFIGURATION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc : Quit | á â à ß :Select Item |
| F10: Save & Exit Setup | (Shift)F2:Change Color |
| Sleep Timer, Suspend Timer ..... |
ROM PCI/ISA BIOS (2A4IBA2H)POWER MANAGEMENT SETUPAWARD SOFTWARE, INC.
| Power Management | : Disabled | IRQ 4 (COM1) | :Enable |
| PM Control by APM | : Yes | IRQ 5 (LPT 2) | :Enable |
| Video Off Option | : Susp,Stby -> Off | IRQ 6 (Floppy Disk) | :Enable |
| Video Off Method | : V/H SYNC+Blank | IRQ 7 (LPT 1) | :Enable |
| Suspend Switch | : Disable | IRQ 8 (RTC Alarm) | :Disable |
| ** PM Timers | ** | IRQ 9 (IRQ2 Redir) | :Enable |
| HDD Off After | : Disable | IRQ10(Reserved) | :Enable |
| Doze Mode | : Disable | IRQ11(Reserved) | :Enable |
| Standby Mode | : Disable | IRQ12(PS/2 Mouse) | :Enable |
| Suspend Mode | : Disable | IRQ13(Coprocessor) | :Enable |
| ** PM Events | ** | IRQ14(Hard Disk) | :Enable |
| PCI Master Activity | : Disable | IRQ15(Reserved) | :Enable |
| COM Ports Activity | : Enable | | |
| LPT Ports Activity | : Enable | Esc : Quit | á â à ß :Seect Item |
| HDD Ports Activity | : Enable | F1 : Help | PU/PD/+/-:Modify |
| DMA Ports Activity | : Disable | F5 : Old Values | (Shift) F2 : Color |
| VGA Activity | : Disable | F6 : Load BIOS Defaults | |
| IRQ3 (COM 2) | : Enabled | F7 : Load Setup Defaults | |
ROM PCI/ISA BIOS (2A4IBA2H)POWER MANAGEMENT SETUPAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | |
| PCI CONFIGURATION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc : Quit | á â à ß :Select Item |
| F10: Save & Exit Setup | (Shift)F2:Change Color |
| Sleep Timer, Suspend Timer ..... |
ROM PCI/ISA BIOS (2A4IBA2H)PCI CONFIGURATION SETUPAWARD SOFTWARE, INC.
| PnP BIOS Auto-Config | : Enable | PCI Master Burst Read/Write : Disable |
| | | |
| Slot 1 Using INT# | : AUTO | |
| Slot 2 Using INT# | : AUTO | |
| Slot 3 Using INT# | : AUTO | |
| | | |
| | | |
| | | |
| | | |
| PCI IRQ Actived By | : Level | |
| PCI IDE 2nd Channel | : Enable | |
| PCI IDE IRQ Map To | : PCI - AUTO | |
| Primary IDE INT# | : A | Esc: Quit á â à ß :Select Item |
| Secondary IDE INT# | : B | F1 : Help PU/PD/+/-:Modify |
| Master Arbitration Protocol | : Weak | F5 : Old Values (Shift)F2:Color |
| CPU->PCI Mem Post Write Buf | : Enable | F6 : Load BIOS Defaults |
| CPU->PCI Memory Burst Write | : Disable | F7 : Load Setup Defaults |
| | | |
ROM PCI/ISA BIOS (2A4IBA2H)CMOS SETUP UTILITYAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI/GREEN FUNCTION SETUP | |
| LOAD BIOS DEFAULTS | |
| LOAD SETUP DEFAULTS | |
| Esc : Quit |
á â
à ß
:Select Item
|
| F10: Save & Exit Setup | (SHIFT)F2:Change Color |
| Save data to CMOS & Exit setup |
ROM PCI/ISA BIOS (2A4IBA2H)CMOS SETUP UTILITYAWARD SOFTWARE, INC.
| STANDARD CMOS SETUP | PASSWORD SETTING |
| BIOS FEATURES SETUP | IDE HDD AUTO DETECTION |
| CHIPSET FEATURES SETUP | SAVE & EXIT SETUP |
| POWER MANAGEMENT SETUP | EXIT WITHOUT SAVING |
| PCI/GREEN FUNCTION SETUPLOAD | |
| LOAD BIOS DEFAULTS | SAVE to COME and EXIT (Y/N):Y |
| LOAD SETUP DEFAULTS | |
| Esc : Quit | |
| F10: Save & Exit Setup | (SHIFT)F2:Change Color |
| Save data to CMOS & Exit setup |
Back to motherboard page
Home