GEMLIGHT COMPUTER, LTD. GMB-486APS (VER. 1.00) Device Mainboard Type Processor 80486SX/80486SX2/80487SX/80486DX/80486DX2/80486DX4/P24C/P24D/P24T/AM 486DX2/AM 486DX4/AM 5X86/CX 486DX/CX 486DX2/CX 486DX4-GP/CX 486DX4-GP4/CX 5X86/IBM 486/TI 486DX2/TI 486DX4/UMC U5S/SGS ST486DX/SGS ST486DX2/SGS ST486DX4V Processor 25/33/40/50/60/66/75/90/100/120/133 Speed Chip Set ALI Maximum 128MB (EDO & SDRAM supported) Onboard Memory Cache 128/256/512KB BIOS Award Dimensions 220mm x 220mm I/O 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), Options parallel port, serial ports (2), IR connector, green PC connector [Image] 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) 256K x 36 None 8MB (2) 1MB x 36 None 10MB (2) 1MB x 36 (2) 256K x 36 16MB (2) 1MB x 36 (2) 1MB x 36 16MB (2) 1MB x 36 None 16MB (2) 2MB x 36 None 18MB (2) 2MB x 36 (2) 256K x 36 24MB (2) 2MB x 36 (2) 1MB x 36 32MB (2) 2MB x 36 (2) 2MB x 36 32MB (2) 2MB x 36 None 32MB (2) 4MB x 36 None 34MB (2) 4MB x 36 (2) 256K x 36 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) 4MB x 36 None 64MB (2) 8MB x 36 None 66MB (2) 8MB x 36 (2) 256K x 36 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 128MB (2) 8MB x 36 None 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 Pins 1 & 2 closed 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) Type JP19 JP20 JP22 JP23 JP24 80486DX2/DX4 (P24C) 2 & 3 Open Open 1 & 2 1 & 2 80486DX2 (P24D) 2 & 3 Open 5 & 6 2 & 3 1 & 2 (L1WB) 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 CONT.) Type JP25 JP26 JP27 JP28 JP29 80486DX2/DX4 Closed 3 & 4 1 & 2 2 & 3 Open (P24C) 80486DX2 (P24D) Closed 3 & 4 1 & 2 2 & 3 3 & 4 (L1WB) 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 CONT.) 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 CONT.) 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 (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 (THOMSON CONT.) 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 CONT.) 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 CONT.) 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 2 & 3 Open Open 1 & 2 Open Note: Designated pins are in the closed position. CPU TYPE SELECTION (UMC CONT.) Type JP25 JP26 JP27 JP28 JP29 U5S Open 1 & 2 Open 2 & 3 Open Note: Designated pins are in the closed position. CPU VOLTAGE SELECTION Voltage JP13/pins 1 JP13/pins 3 JP13/pins 5 JP13/pins 7 & & 2 & 4 & 6 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