ATC/UNITRON COMPUTER & COMPUTER PARTS 486WL Processor CX486M6/CX486M7/AM486SXL/AM486SX(PLUS)/80486SX/AM486DXL/ 80486DX/ 80486DX2/AM486DX4(PLUS)/80486DX4/P23S/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/100(internal)/ Speed 120(internal)MHz Chip Set SIS Max. 128MB Onboard DRAM Cache 128/256/512/1024KB BIOS AMI/Award Dimensions 330mm x 198mm I/O 32-bit VESA local bus slot, PS/2 mouse port, floppy drive interface, green PC Options connector, IDE interface, parallel port, serial ports (2), VGA feature connector, VGA port, riser slot NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location VGA port CN1 Green PC connector JP59 Parallel port CN2 IDE interface LED JP60 Serial port 2 CN3 Turbo LED JP61 pins 1 & 2 Serial port 1 CN4 Turbo switch JP61 pins 3 & 4 VGA feature CN5 Reset switch JP62 connector IDE interface CN6 Speaker JP63 Floppy drive CN7 Power LED & JP64 interface keylock PS/2 mouse port CN8 Riser Card SL1 External battery JP16 32-bit VESA local SL2 bus slot Green PC connector JP51 USER CONFIGURABLE SETTINGS Function Jumper Position PS/2 mouse enabled JP3 Closed PS/2 mouse disabled JP3 Open » Power good signal detect from JP4 pins 1 & 2 power supply closed Power good signal detect from JP4 pins 2 & 3 board closed » VGA BIOS enabled JP7 pins 1 & 2 closed VGA BIOS disabled JP7 pins 2 & 3 closed » Factory configured - do not JP8 N/A alter Monitor type select color JP9 Closed Monitor type select monochrome JP9 Open » On board VGA enabled JP10 pins 1 & 2 closed On board VGA disabled JP10 pins 2 & 3 closed » CMOS memory normal operation JP11 pins 1 & 2 closed CMOS memory clear JP11 pins 2 & 3 closed » ECP DRQ enabled JP12 pins 1 & 2 closed ECP DRQ disabled JP12 pins 2 & 3 closed » ECP A10 enabled JP15 pins 1 & 2 closed ECP A10 disabled JP15 pins 2 & 3 closed » Parallel port IRQ select IRQ7 JP17 pins 2 & 3 closed Parallel port IRQ select IRQ5 JP17 pins 1 & 2 closed » Serial port IRQ select IRQ4 JP18 pins 3 & 4 closed Serial port IRQ select IRQ3 JP18 pins 1 & 2 closed » Factory configured - do not JP24 N/A alter CPU voltage regulator type JP25 pins 1 & 2 select LT1085 closed CPU voltage regulator type JP25 pins 2 & 3 select LT1085-3.3 closed CPU voltage regulator type JP27 Closed select auto CPU voltage regulator type JP27 Open select manual » IDE interface enabled JP32 Open IDE interface disabled JP32 Closed USER CONFIGURABLE SETTINGS (CON'T) Function Jumper Position » CPU clock = CLKIN JP47 pins 1 & 2 closed CPU clock delayed for CLKIN JP47 pins 2 & 3 closed » Internal clock select CLKIN JP50 pins 1 & 2 closed Internal clock select 1/2 CLKIN JP50 pins 2 & 3 closed » Factory configured - do not JP65 N/A alter DRAM CONFIGURATION 1 Size Bank 0 Bank 1 Bank 2 1MB (4) 256K x 9 NONE NONE 2MB (4) 256K x 9 (1) 256K x 36 NONE 4MB (4) 1M x 9 NONE NONE 5MB (4) 256K x 9 (1) 1M x 36 NONE 6MB (4) 256K x 9 (1) 256K x 36 (1) 1M x 36 8MB (4) 1M x 9 (1) 1M x 36 NONE 12MB (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 16MB (4) 4M x 9 NONE NONE 17MB (4) 256K x 9 (1) 4M x 36 NONE 18MB (4) 256K x 9 (1) 256K x 36 (1) 4M x 36 20MB (4) 1M x 9 (1) 4M x 36 NONE 24MB (4) 1M x 9 (1) 1M x 36 (1) 4M x 36 32MB (4) 4M x 9 (1) 4M x 36 NONE 36MB (4) 1M x 9 (1) 4M x 36 (1) 4M x 36 48MB (4) 4M x 9 (1) 4M x 36 (1) 4M x 36 64MB (4) 16M x 9 NONE NONE 65MB (4) 256K x 9 (1) 16M x 36 NONE 68MB (4) 1M x 9 (1) 16M x 36 NONE 72MB (4) 1M x 9 (1) 1M x 36 (1) 16M x 36 80MB (4) 4M x 9 (1) 16M x 36 NONE 96MB (4) 4M x 9 (1) 4M x 36 (1) 16M x 36 128MB (4) 16M x 9 (1) 16M x 36 NONE DRAM CONFIGURATION 2 Size Bank 0 Bank 1 Bank 2 1MB NONE (1) 256K x 36 NONE 2MB NONE (1) 256K x 36 (1) 256K x 36 4MB NONE (1) 1M x 36 NONE 5MB NONE (1) 256K x 36 (1) 1M x 36 6MB (4) 1M x 9 (1) 256K x 36 (1) 256K x 36 8MB NONE (1) 1M x 36 (1) 1M x 36 12MB (4) 1M x 9 (1) 1M x 36 (1) 1M x 36 16MB NONE (1) 4M x 36 NONE 17MB NONE (1) 256K x 36 (1) 4M x 36 18MB (4) 4M x 9 (1) 256K x 36 (1) 256K x 36 DRAM CONFIGURATION 2 (CON'T) Size Bank 0 Bank 1 Bank 2 20MB NONE (1) 1M x 36 (1) 4M x 36 24MB (4) 4M x 9 (1) 1M x 36 (1) 1M x 36 32MB NONE (1) 4M x 36 (1) 4M x 36 32MB NONE (1) 8M x 36 NONE 36MB (4) 4M x 9 (1) 1M x 36 (1) 4M x 36 36MB NONE (1) 1M x 36 (1) 8M x 36 48MB (4) 4M x 9 (1) 4M x 36 (1) 4M x 36 48MB NONE (1) 4M x 36 (1) 8M x 36 64MB NONE (1) 8M x 36 (1) 8M x 36 64MB NONE (1) 16M x 36 NONE 65MB NONE (1) 256K x 36 (1) 16M x 36 68MB NONE (1) 1M x 36 (1) 16M x 36 72MB (4) 16M x 9 (4) 1M x 9 (4) 1M x 9 80MB NONE (4) 4M x 9 (4) 16M x 9 96MB (4) 16M x 9 (4) 4M x 9 (4) 4M x 9 128MB NONE (4) 16M x 9 (4) 16M x 9 DRAM JUMPER CONFIGURATION Configuration JP54 JP55 JP56 1 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 2 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 256KB (B) (4) 64K x 8 NONE (1) 32K x 8 512KB (A) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 512KB (B) (4) 128K x 8 NONE (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K x 8 Note: The location of Banks 0 & 1 and TAG are unidentified. CACHE JUMPER CONFIGURATION Size JP33 JP34 JP35 JP36 JP52 JP53 128KB 1 & 2 1 & 2 Any Any 1 & 2 1 & 2 setting setting 256KB 2 & 3 2 & 3 Any Any 1 & 2 2 & 3 (A) setting setting 256KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 (B) 512KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 (A) 512KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 (B) 1MB 2 & 3 2 & 3 2 & 3 1 & 2 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP19 JP20 JP21 JP22 JP23 CX486M6 N/A 2 & 3 1 & 2 2 & 3 N/A AM486SXL 1 & 2 N/A 2 & 3 2 & 3 N/A AM486SX(PLUS) 4 & 5 N/A 1 & 2 2 & 3 2 & 3 80486SX 1 & 2 N/A 1 & 2 2 & 3 N/A AM486DXL 1 & 2 N/A 2 & 3 2 & 3 N/A CX486M7 N/A 2 & 3 1 & 2 2 & 3 N/A 80486DX 1 & 2 N/A 1 & 2 2 & 3 N/A 80486DX2 1 & 2 N/A 1 & 2 2 & 3 N/A AM486DX4(PLUS) 4 & 5 N/A 1 & 2 2 & 3 2 & 3 80486DX4 1 & 2 N/A 1 & 2 2 & 3 N/A P23S 1 & 2 N/A 1 & 2 2 & 3 N/A P24D 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 P24T 1 & 2 1 & 2 1 & 2 1 & 2 N/A Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON'T) Type JP38 JP39 JP40 JP41 JP42 CX486M6 2 & 3 2 & 3 N/A 1 & 2 2 & 3 AM486SXL N/A 3 & 4 1 & 2 3 & 4 2 & 3 AM486SX(PLUS) 4 & 5 N/A N/A 2 & 3 2 & 3 80486SX 4 & 5 N/A N/A 2 & 3 2 & 3 AM486DXL N/A 3 & 4 1 & 2, 3 3 & 4 1 & 2, 3 & 4 & 4 CX486M7 2 & 3 2 & 3 3 & 4 1 & 2 1 & 2, 3 & 4 80486DX 4 & 5 N/A 3 & 4 2 & 3 1 & 2, 3 & 4 80486DX2 4 & 5 N/A 3 & 4 2 & 3 1 & 2, 3 & 4 AM486DX4(PLUS) 4 & 5 N/A 3 & 4 2 & 3 1 & 2, 3 & 4 80486DX4 4 & 5 N/A 3 & 4 2 & 3 1 & 2, 3 & 4 P23S 4 & 5 N/A 3 & 4 2 & 3 2 & 3 P24D 4 & 5 N/A 3 & 4 2 & 3 1 & 2, 3 & 4 P24T 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2, 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON'T) Type JP43 JP44 JP45 JP46 JP48 JP49 CX486M6 N/A N/A 2 & 3 N/A N/A N/A AM486SXL N/A N/A 4 & 5 N/A N/A N/A AM486SX(PLUS) N/A N/A 3 & 4 N/A N/A N/A 80486SX N/A N/A 3 & 4 N/A 2 & 3 1 & 2 AM486DXL N/A N/A 4 & 5 N/A 1 & 2 2 & 3 CX486M7 N/A N/A 2 & 3 N/A 1 & 2 2 & 3 80486DX 2 & 3 N/A 3 & 4 N/A 2 & 3 1 & 2 80486DX2 2 & 3 N/A 3 & 4 N/A 2 & 3 1 & 2 AM486DX4(PLUS) 2 & 3 N/A 3 & 4 N/A 1 & 2 1 & 2 80486DX4 1 & 2 N/A 3 & 4 N/A 2 & 3 1 & 2 P23S N/A N/A 3 & 4 N/A N/A N/A P24D 1 & 2, N/A 1 & 2, N/A 1 & 2 1 & 2 or 2 & 3 & 4 3 P24T N/A N/A 3 & 4 1 & 2, 1 & 2 1 & 2 or 2 & 3 Note: Pins designated should be in the closed position. This board also accepts SL-series CPUs & am486dxl2, but no jumper settings are listed. CPU SPEED CONFIGURATION Speed JP37 25MHz pins 1 & 2, 5 & 6 closed 33MHz pins 1 & 2, 3 & 4 closed 40MHz pins 5 & 6 closed 50iMHz pins 1 & 2, 5 & 6 closed 50MHz pins 3 & 4 closed 66iMHz pins 1 & 2, 3 & 4 closed 75iMHz pins 1 & 2, 5 & 6 closed 80iMHz pins 5 & 6 closed 100iMHz pins 1 & 2, 3 & 4 closed 120iMHz pins 5 & 6 closed CPU VOLTAGE CONFIGURATION Voltage JP26 Auto detect Open 3.3v pins 2 & 3 closed 5v pins 1 & 2 closed VL BUS WAIT STATE CONFIGURATION Wait states JP58 » 0 wait states pins 1 & 2 closed » 1 wait state pins 2 & 3 closed VL BUS SPEED CONFIGURATION CPU speed JP57 » <= 33MHz pins 1 & 2 closed » > 33MHz pins 2 & 3 closed DMA CONFIGURATION DMA JP13 JP14 » DMA 1 pins 2 & 3 closed pins 2 & 3 closed » DMA 3 pins 1 & 2 closed pins 1 & 2 closed FLOPPY ENHANCED MODE CONFIGURATION Setting JP28 JP29 » Enabled Closed Closed » Disabled Open Open MEDIA DETECT CONFIGURATION Setting JP30 JP31 » Enabled Closed Closed » Disabled Open Open MISCELLANEOUS TECHNICAL NOTE Note: The location of pin 1 is unidentified.