VEXTREC TECHNOLOGY, INC.
GMB-486APS (VER. 1.00)
| 
 Device Type  | 
 Mainboard  | 
| 
 Processor  | 
 80486SX/DX/DX2/DX4/P24/AM486DX2/DX4/ AM 5X86/AM K5/AM K6/CX486DX/DX2/DX4/CX 5X86/CX 6X86/CX 6X86L/TI 486DX2/SGS ST486SX  | 
| 
 Processor Speed  | 
 25/33/40/50/60/66/75/90/100/120/133  | 
| 
 Chip Set  | 
 ALI  | 
| 
 Maximum Onboard Memory  | 
 128MB (EDO & SDRAM supported)  | 
| 
 Cache  | 
 128/256/512KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 220mm x 220mm  | 
| 
 I/O Options  | 
 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, serial ports (2), IR connector, Green PC connector  | 
| 
 CONNECTIONS  | |||
| 
 Purpose  | 
 Location  | 
 Purpose  | 
 Location  | 
| 
 IDE interface 1  | 
 CN1  | 
 Reset switch  | 
 J2  | 
| 
 IDE interface 2  | 
 CN2  | 
 Turbo switch  | 
 J3  | 
| 
 Parallel port  | 
 CN3  | 
 Turbo LED  | 
 J4  | 
| 
 Floppy drive interface  | 
 CN4  | 
 Power LED & keylock  | 
 J5  | 
| 
 IR connector  | 
 CN5  | 
 Speaker  | 
 J6  | 
| 
 Serial port 1  | 
 CN6  | 
 IDE interface LED  | 
 J7  | 
| 
 Serial port 2  | 
 CN7  | 
 Green PC connector  | 
 JP21  | 
| 
 External battery  | 
 J1  | 
 32-bit PCI slots  | 
 PC1 - PC4  | 
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Function  | 
 Label  | 
 Position  | |
| 
 »  | 
 CMOS memory normal operation  | 
 J1  | 
 Pins 1 & 2 closed  | 
| 
 CMOS memory clear  | 
 J1  | 
 Pins 2 & 3 closed  | |
| 
 Flash BIOS voltage select 5V  | 
 JP9  | 
 Pins 1 & 2 closed  | |
| 
 Flash BIOS voltage select 12V  | 
 JP9  | 
 Pins 2 & 3 closed  | |
| 
 DRAM CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 2MB  | 
 (2) 256K x 36  | 
 None  | 
| 
 4MB  | 
 (2) 256K x 36  | 
 (2) 256K x 36  | 
| 
 4MB  | 
 (2) 512K x 36  | 
 None  | 
| 
 8MB  | 
 (2) 512K x 36  | 
 (2) 512K x 36  | 
| 
 8MB  | 
 (2) 1MB x 36  | 
 None  | 
| 
 16MB  | 
 (2) 1MB x 36  | 
 (2) 1MB x 36  | 
| 
 16MB  | 
 (2) 2MB x 36  | 
 None  | 
| 
 24MB  | 
 (2) 2MB x 36  | 
 (2) 1MB x 36  | 
| 
 32MB  | 
 (2) 2MB x 36  | 
 (2) 2MB x 36  | 
| 
 32MB  | 
 (2) 4MB x 36  | 
 None  | 
| 
 40MB  | 
 (2) 4MB x 36  | 
 (2) 1MB x 36  | 
| 
 48MB  | 
 (2) 4MB x 36  | 
 (2) 2MB x 36  | 
| 
 64MB  | 
 (2) 4MB x 36  | 
 (2) 4MB x 36  | 
| 
 64MB  | 
 (2) 8MB x 36  | 
 None  | 
| 
 72MB  | 
 (2) 8MB x 36  | 
 (2) 1MB x 36  | 
| 
 80MB  | 
 (2) 8MB x 36  | 
 (2) 2MB x 36  | 
| 
 96MB  | 
 (2) 8MB x 36  | 
 (2) 4MB x 36  | 
| 
 128MB  | 
 (2) 8MB x 36  | 
 (2) 8MB x 36  | 
| 
 CACHE MEMORY CONFIGURATION  | ||
| 
 Size  | 
 Bank 0  | 
 TAG  | 
| 
 128KB  | 
 32K x 8  | 
 8K x 8  | 
| 
 256KB  | 
 64K x 8  | 
 16K x 8  | 
| 
 512KB  | 
 128K x 8  | 
 32K x 8  | 
| 
 CACHE JUMPER CONFIGURATION  | ||
| 
 Size  | 
 JP15  | 
 JP30  | 
| 
 128KB  | 
 Open  | 
 Pins 2 & 3 closed  | 
| 
 256KB  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
| 
 512KB  | 
 Pins 1 & 2, 3 & 4 closed  | 
 Pins 1 & 2 closed  | 
| 
 CPU SPEED SELECTION  | |||||
| 
 Speed  | 
 JP2  | 
 JP5  | 
 JP6  | 
 JP7  | 
 JP8  | 
| 
 25MHz  | 
 1 & 2  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 33MHz  | 
 1 & 2  | 
 Closed  | 
 Closed  | 
 1 & 2  | 
 Open  | 
| 
 40MHz  | 
 2 & 3  | 
 Closed  | 
 Open  | 
 2 & 3  | 
 Closed  | 
| 
 Note: Pins designated are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (INTEL)  | |||||
| 
 CPU type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 80486DX2/DX4 (P24C)  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486DX2 (P24D) (L1WB)  | 
 2 & 3  | 
 Open  | 
 5 & 6  | 
 2 & 3  | 
 1 & 2  | 
| 
 80486DX/DX2  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 80487SX  | 
 1 & 2  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 80486SX/SX2  | 
 Open  | 
 Open  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 80486SX  | 
 Open  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 P24T  | 
 1 & 2  | 
 Open  | 
 Open  | 
 2 & 3  | 
 1 & 2  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (INTEL) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 80486DX2/DX4 (P24C)  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
| 
 80486DX2 (P24D) (L1WB)  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 3 & 4  | 
| 
 80486DX/DX2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 80487SX  | 
 Open  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 80486SX/SX2  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 1 & 2  | 
 Open  | 
| 
 80486SX  | 
 Open  | 
 1 & 2  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 P24T  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (CYRIX)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 486DX4-GP4  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 DX/DX2/DX2-V/DX4-GP  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
 3 & 4  | 
| 
 CX 5X86  | 
 2 & 3  | 
 Open  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (CYRIX) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 486DX4-GP4  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
| 
 DX/DX2/DX2-V/DX4-GP  | 
 Closed  | 
 5 & 6  | 
 3 & 4  | 
 2 & 3  | 
 1 & 2  | 
| 
 CX 5X86  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 3 & 4  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (AMD)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 Am486DX2/DX4  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 Am486DX2/DX4 (SV8B)  | 
 2 & 3  | 
 Open  | 
 5 & 6  | 
 2 & 3  | 
 1 & 2  | 
| 
 AMD-5X86 (AMD-5X)  | 
 2 & 3  | 
 Open  | 
 5 & 6  | 
 2 & 3  | 
 1 & 2  | 
| 
 Am486DX/DX2  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (AMD) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 Am486DX2/DX4  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
| 
 Am486DX2/DX4 (SV8B)  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 3 & 4  | 
| 
 AMD-5X86 (AMD-5X)  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 3 & 4  | 
| 
 Am486DX/DX2  | 
 Open  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (SGS/THOMSON)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 ST486DX4V10HS  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (SGS/THOMSON) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 ST486DX4V10HS  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (TEXAS INSTUMENTS)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 486DX2  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
 3 & 4  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (TEXAS INSTUMENTS) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 486DX2  | 
 Closed  | 
 5 & 6  | 
 3 & 4  | 
 2 & 3  | 
 1 & 2  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (IBM)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 486-4V3100GC  | 
 2 & 3  | 
 Open  | 
 1 & 2  | 
 1 & 2  | 
 3 & 4  | 
| 
 486-4V3100GIC  | 
 2 & 3  | 
 Open  | 
 5 & 6  | 
 1 & 2  | 
 1 & 2  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (IBM) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 486-4V3100GC  | 
 Closed  | 
 5 & 6  | 
 3 & 4  | 
 2 & 3  | 
 1 & 2  | 
| 
 486-4V3100GIC  | 
 Closed  | 
 3 & 4  | 
 1 & 2  | 
 2 & 3  | 
 3 & 4  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (UMC)  | |||||
| 
 Type  | 
 JP19  | 
 JP20  | 
 JP22  | 
 JP23  | 
 JP24  | 
| 
 U5S-Super  | 
 2 & 3  | 
 Open  | 
 Open  | 
 1 & 2  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU TYPE SELECTION (UMC) (CON’T)  | |||||
| 
 Type  | 
 JP25  | 
 JP26  | 
 JP27  | 
 JP28  | 
 JP29  | 
| 
 U5S-Super  | 
 Open  | 
 1 & 2  | 
 Open  | 
 2 & 3  | 
 Open  | 
| 
 Note: Designated pins are in the closed position.  | |||||
| 
 CPU VOLTAGE SELECTION  | ||||
| 
 Voltage  | 
 JP13/pins 1 & 2  | 
 JP13/pins 3 & 4  | 
 JP13/pins 5 & 6  | 
 JP13/pins 7 & 8  | 
| 
 3.3v  | 
 Open  | 
 Closed  | 
 Open  | 
 Open  | 
| 
 3.45v  | 
 Open  | 
 Open  | 
 Closed  | 
 Open  | 
| 
 3.6v  | 
 Open  | 
 Open  | 
 Open  | 
 Closed  | 
| 
 4v  | 
 Open  | 
 Open  | 
 Open  | 
 Open  | 
| 
 5v  | 
 Closed  | 
 Open  | 
 Open  | 
 Open  |