J-MARK COMPUTER CORPORATION J-446A (V2.0) Processor 80486SX/AM486DX2/CX486DX2/80486DX2/CX486DX4/AM486DX4/ AM486DX4(WB)/AM486DX4(WT)/80486DX4(WB)/80486DX4(WT)/ P24D/P24T/CX5X86/AM5X86 Processor 25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ Speed 120(internal)MHz Chip Set SIS Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 128/256KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit PCI slots (3), floppy drive interface, green PC connector, Options IDE interfaces (2), parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Parallel port CN1 IDE interface LED JP33 IDE interface 2 CN2 Green PC connector JP35 IDE interface 1 CN3 Turbo LED JP37 Floppy drive interface CN4 Reset switch JP38 Serial port 1 CN5 Turbo switch JP39 Serial port 2 CN6 Power LED & keylock JP40 External battery JP1 Green PC LED LED1 Speaker JP27 32-bit PCI slots PC1 - PC3 USER CONFIGURABLE SETTINGS Function Label Position » Monitor type select color JP6 Closed Monitor type select monochrome JP6 Open » Factory configured - do not JP13 Unidentified alter » BIOS type select EPROM JP19 Open BIOS type select 5v flash JP19 Pins 2 & 3 closed BIOS type select 12v flash JP19 Pins 1 & 2 closed » Factory configured - do not JP21 Unidentified alter Turbo enabled JP39 Pins 2 & 3 closed Turbo disabled JP39 Pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x None None None 36 2MB (1) 512K x None None None 36 2MB (1) 256K x (1) 256K x None None 36 36 3MB (1) 512K x (1) 256K x None None 36 36 3MB (1) 256K x (1) 256K x (1) 256K x None 36 36 36 3MB (1) 256K x (1) 512K x None None 36 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 256K x (1) 256K x None 36 36 36 4MB (1) 512K x (1) 512K x None None 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 1M x 36 (1) 256K x None None 36 5MB (1) 512K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x None 36 36 6MB (1) 1M x 36 (1) 512K x None None 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 6MB (1) 512K x (1) 512K x (1) 512K x None 36 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 512K x (1) 512K x None 36 36 8MB (1) 1M x 36 (1) 1M x 36 None None 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 9MB (1) 2M x 36 (1) 256K x None None 36 10MB (1) 2M x 36 (1) 256K x (1) 256K x None 36 36 10MB (1) 2M x 36 (1) 512K x None None 36 10MB (1) 1M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 11MB (1) 2M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 12MB (1) 2M x 36 (1) 512K x (1) 512K x None 36 36 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 14MB (1) 2M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 17MB (1) 4M x 36 (1) 256K x None None 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x None 36 36 18MB (1) 4M x 36 (1) 512K x None None 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 512K x (1) 512K x None 36 36 20MB (1) 4M x 36 (1) 1M x 36 None None 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 None 20MB (1) 1M x 36 (1) 4M x 36 None None 22MB (1) 4M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 None 24MB (1) 4M x 36 (1) 2M x 36 None None 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 None 24MB (1) 2M x 36 (1) 4M x 36 None None 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 28MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 None 32MB (1) 4M x 36 (1) 4M x 36 None None 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 33MB (1) 8M x 36 (1) 256K x None None 36 34MB (1) 8M x 36 (1) 256K x (1) 256K x None 36 36 34MB (1) 8M x 36 (1) 512K x None None 36 35MB (1) 8M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 36MB (1) 8M x 36 (1) 512K x (1) 512K x None 36 36 36MB (1) 8M x 36 (1) 1M x 36 None None 38MB (1) 8M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 40MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 None 40MB (1) 8M x 36 (1) 2M x 36 None None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 None 48MB (1) 8M x 36 (1) 4M x 36 None None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 56MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 None 64MB (1) 8M x 36 (1) 8M x 36 None None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 None 72MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 None 80MB (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 None 100MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 104MB (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 112MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 CACHE CONFIGURATION Size Bank 0 TAG 128KB (4) 32K x 8 (1) 8K x 8 256KB (4) 64K x 8 (1) 16K x 8 CACHE JUMPER CONFIGURATION Size JP7 JP8 128KB Pins 1 & 2 closed Pins 1 & 2 closed 256KB Pins 1 & 2 closed Pins 2 & 3 closed CPU SPEED CONFIGURATION Speed JP11 JP12 25MHz Open Pins 1 & 2 closed 33MHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 40MHz Pins 1 & 2 closed Pins 1 & 2 closed 50iMHz Open Pins 1 & 2 closed 50MHz Pins 3 & 4 closed Pins 2 & 3 closed 66iMHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 80iMHz Pins 1 & 2 closed Pins 1 & 2 closed 100iMHz Pins 1 & 2, 3 & 4 Pins 1 & 2 closed closed 120iMHz Pins 1 & 2 closed Pins 1 & 2 closed CPU TYPE SELECTION Type JP9 JP10 JP14 JP15 JP16 80486SX Open 2 & 3 Open Open Open AM486DX2 2 & 3 2 & 3 Open Open 2 & 3 CX486DX2 2 & 3 2 & 3 Open Open Open 80486DX2 2 & 3 2 & 3 Open Open Open CX486DX4 2 & 3 2 & 3 Open Open Open AM486DX4 2 & 3 1 & 2 Open 1 & 2 1 & 2 AM486DX4 (WB) 2 & 3 1 & 2 Open 1 & 2 1 & 2 AM486DX4 (WT) 2 & 3 2 & 3 Open Open 1 & 2 80486DX4 (WB) 2 & 3 1 & 2 Open 1 & 2 1 & 2 80486DX4 (WT) 2 & 3 2 & 3 Open Open Open P24D 2 & 3 1 & 2 Open 1 & 2 1 & 2 P24T 1 & 2 1 & 2 1 & 2 Open Open CX5X86 2 & 3 2 & 3 Open 1 & 2 Open AM5X86 2 & 3 1 & 2 Open 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP17 JP20 JP23 JP24 JP25 80486SX 2 & 3 Closed 1 & 2 4 & 5 2 & 3 AM486DX2 Open Open Open 4 & 5 1 & 2, 3 & 4 CX486DX2 1 & 2 Closed Open 2 & 3 1 & 2, 3 & 4 80486DX2 2 & 3 Closed 1 & 2 4 & 5 1 & 2, 3 & 4 CX486DX4 1 & 2 Closed Open 2 & 3 1 & 2, 3 & 4 AM486DX4 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 AM486DX4 (WB) 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 AM486DX4 (WT) Open Open Open 4 & 5 1 & 2, 3 & 4 80486DX4 (WB) 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 80486DX4 (WT) 2 & 3 Closed 1 & 2 4 & 5 1 & 2, 3 & 4 P24D 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 P24T 2 & 3 Closed Open 1 & 2 1 & 2, 3 & 4 CX5X86 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 AM5X86 2 & 3 Closed 2 & 3 4 & 5 1 & 2, 3 & 4 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP26 JP28 JP29 JP30 80486SX 3 & 4 Open Open Open AM486DX2 3 & 4 Open Open Open CX486DX2 2 & 3 2 & 3 2 & 3 Open 80486DX2 3 & 4 Open Open Open CX486DX4 2 & 3 2 & 3 2 & 3 Open AM486DX4 1 & 2, 3 & Open 1 & 2 Open 4 AM486DX4 (WB) 1 & 2, 3 & Open 1 & 2 Open 4 AM486DX4 (WT) 3 & 4 Open Open Open 80486DX4 (WB) 1 & 2, 3 & Open 1 & 2 Open 4 80486DX4 (WT) 3 & 4 Open Open Open P24D 1 & 2, 3 & Open 1 & 2 Open 4 P24T 3 & 4 1 & 2 1 & 2 Open CX5X86 1 & 2, 3 & Open 1 & 2 Open 4 AM5X86 1 & 2, 3 & Open 1 & 2 2 & 3 4 Note: Pins designated should be in the closed position. CPU VOLTAGE CONFIGURATION Voltage JP31 JP32 JP34 3.3v Pins 2 & 3 Pins 5 & 6 Pins 2 & 3 closed closed closed 3.45v Pins 2 & 3 Pins 3 & 4 Pins 2 & 3 closed closed closed 4v Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 5v Pins 1 & 2 N/A Pins 1 & 2 closed closed GREEN PC CONFIGURATION Setting JP36 Doze mode Pins 1 & 2 closed Suspend mode Pins 3 & 4 closed Standby mode Pins 5 & 6, 7 & 8 closed CMOS CONFIGURATION Setting JP2 JP3 CMOS memory normal Pins 1 & 2 closed Pins 1 & 2 closed operation CMOS memory clear Pins 2 & 3 closed Pins 2 & 3 closed DAM CHANNEL SELECTION Channel JP18 JP22 1 Pins 1 & 3 closed Pins 1 & 3 closed 3 Pins 2 & 4 closed Pins 2 & 4 closed