VISIONEX 486 AT MOTHERBOARD MODEL [4GPV5] Processor AM486SX/80486SX/CX486DX/AM486DX/80486DX/CX486DX2/ AM486DX2/80486DX2/CX486DX4/AM486DX4/80486DX4 Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ Speed 100(internal)/120(internal)MHz Chip Set Unidentified Video Chip None Set Maximum 64MB Onboard Memory Maximum None Video Memory Cache 128/256/512/1024KB BIOS AMI/Award/MR Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Green PC connector JP3 Green PC connector JP20 Power LED & keylock JP16 Turbo LED JP21 Speaker JP17 Reset switch JP26 Green PC LED JP18 32-bit VESA local bus SL1 - SL3 slots Turbo switch JP19 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP1 Pins 1 & 2 closed CMOS memory clear JP1 Pins 2 & 3 closed Flash BIOS voltage select 12v JP5 Pins 2 & 3 closed Flash BIOS voltage select 5v JP5 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 5MB (1) 256K x (1) 512K x (1) 512K x None 36 36 36 5MB (1) 256K x (1) 1M x 36 None None 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 6MB (1) 512K x (1) 512K x (1) 512K x None 36 36 36 6MB (1) 512K x (1) 1M x 36 None None 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 7MB (1) 256K x (1) 512K x (1) 512K x (1) 512K x 36 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 9MB (1) 256K x (1) 1M x 36 (1) 1M x 36 None 36 9MB (1) 256K x (1) 2M x 36 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 10MB (1) 512K x (1) 1M x 36 (1) 1M x 36 None 36 10MB (1) 512K x (1) 2M x 36 None None 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 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 12MB (1) 1M x 36 (1) 2M x 36 None None 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 14MB (1) 2M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 14MB (1) 512K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 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 17MB (1) 256K x (1) 2M x 36 (1) 2M x 36 None 36 17MB (1) 256K x (1) 4M x 36 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 18MB (1) 512K x (1) 2M x 36 (1) 2M x 36 None 36 18MB (1) 512K x (1) 4M x 36 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) 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 25MB (1) 256K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 26MB (1) 512K x (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 36 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) 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) 256K x (1) 4M x 36 (1) 4M x 36 None 36 34MB (1) 512K x (1) 4M x 36 (1) 4M x 36 None 36 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 49MB (1) 256K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 50MB (1) 512K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 56MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 DRAM JUMPER CONFIGURATION Setting JP70 Banks 0, 1, 2, & 3 are used as single banks Pins 1 & 2 closed Banks 0 & 1 and Banks 2 & 3 used as banks 0 Pins 2 & 3 closed & 1 respectively 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) 128K x 8 None (1) 32K x 8 512KB (B) (4) 64K x 8 (4) 64K x 8 (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 128K x 8 Note: The location of the TAG is unidentified. CACHE JUMPER CONFIGURATION Size JP6 JP11 JP12 128KB Open Pins 2 & 3 Pins 1 & 2 closed closed 256KB (A) Open Pins 1 & 2 Pins 1 & 2 closed closed 256KB (B) Open Pins 2 & 3 Pins 1 & 2 closed closed 512KB (A) Open Pins 2 & 3 Pins 2 & 3 closed closed 512KB (B) Pins 1 & 2 Open Pins 2 & 3 closed closed 1MB Pins 2 & 3 Open Pins 2 & 3 closed closed CPU SPEED SELECTION Speed JP2A JP2B JP2C JP13 JP22 25MHz Closed 1 & 2 2 & 3 Closed Open 33MHz Closed 2 & 3 1 & 2 Open Open 40MHz Open 1 & 2 2 & 3 Open Closed 50iMHz Closed 1 & 2 2 & 3 Closed Open 50MHz Open 2 & 3 1 & 2 Open Closed 66iMHz Closed 2 & 3 1 & 2 Open Open 75iMHz Closed 1 & 2 2 & 3 Closed Open 80iMHz Open 1 & 2 2 & 3 Open Closed 100iMHz Closed 2 & 3 1 & 2 Open Open 120iMHz Open 1 & 2 2 & 3 Open Closed Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP15 JP80 AM486SX Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed 80486SX Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed AM486DX Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed CX486DX Pins 2 & 3 closed Pins 1 & 3, 2 & 4 closed 80486DX Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed AM486DX2 Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed CX486DX2 (3.3v) Pins 2 & 3 closed Pins 3 & 5, 4 & 6 closed CX486DX2 (5v) Pins 2 & 3 closed Pins 1 & 3, 2 & 4 closed 80486DX2 Pins 1 & 2 closed Pins 1 & 3, 2 & 4 closed CX486DX4 Pins 2 & 3 closed Pins 3 & 5, 4 & 6 closed AM486DX4 (3.3v) Pins 1 & 2 closed Pins 3 & 5, 4 & 6 closed 80486DX4 (3.3v) Pins 1 & 2 closed Pins 3 & 5, 4 & 6 closed