SPRINT MANUFACTURING CORPORATION MB-486VI Processor 80486SX/80486DX/80486DX2/80486DX4/P24D/P24T Processor 16/20/25/33/40/50(internal)/50/66(internal)/75(internal)/ Speed 80(internal)/100(internal)MHz Chip Set Unidentified Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 64/128/256/512/1024KB BIOS AMI Dimensions 254mm x 218mm I/O Options 32-bit VESA local bus slots (3) NPU Options None [Image] CONNECTIONS Purpose Location 32-bit VESA local bus slots SL1 - SL3 USER CONFIGURABLE SETTINGS Function Label Position Monitor type select color JP17 Closed Monitor type select monochrome JP17 Open BIOS type select EPROM JP18 Pins 1 & 2 closed BIOS type select flash JP18 Pins 2 & 3 closed » Factory configured - do not alter JP22 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 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 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 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) 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 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) 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 33MB (1) 256K x (1) 4M x 36 (1) 4M x 36 None 36 33MB (1) 256K x (1) 8M x 36 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 34MB (1) 512K x (1) 4M x 36 (1) 4M x 36 None 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 34MB (1) 512K x (1) 8M x 36 None None 36 35MB (1) 8M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 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 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 36MB (1) 1M x 36 (1) 8M 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 40MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 None 40MB (1) 2M x 36 (1) 8M x 36 None None 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 48MB (1) 4M x 36 (1) 8M x 36 None 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) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 56MB (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M 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 65MB (1) 256K x (1) 8M x 36 (1) 8M x 36 None 36 66MB (1) 512K x (1) 8M x 36 (1) 8M x 36 None 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 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 None 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 None 97MB (1) 256K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 98MB (1) 512K x (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 36 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 Note: Board also accepts x 32 SIMMs. DRAM JUMPER CONFIGURATION Type JP3 Normal SIMM Open 4K fast refresh 4M x 16 SIMM Closed CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (2) 8K x 8 128KB (4) 32K x 8 None (2) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (2) 32K x 8 512KB (4) 128K x 8 None (2) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (2) 128K x 8 Note: The location of banks 0 & 1, data TAG & TAG are unidentified. CACHE JUMPER CONFIGURATION Size JD1 JD2 JT1 JT2 JT3 64KB 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 512KB 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 1MB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CACHE TAG CONFIGURATION Setting JP16 TAG combined Pins 1 & 2 closed TAG separated Pins 2 & 3 closed CPU CLOCK SPEED SELECTION Speed JP25 JP26 JP27 16MHz Closed Closed Closed 20MHz Open Closed Closed 25MHz Closed Open Closed 33MHz Open Open Closed 40MHz Closed Closed Open 50MHz Open Closed Open 66MHz Closed Open Open CPU TYPE SELECTION Type JP5 JP6 JP7 JP11 JP41 RN1 80486SX 2 & 3 Closed N/A N/A N/A Not installed 80486DX 1 & 2 Closed N/A 1 & 2 N/A Installed 80486DX2 1 & 2 Closed N/A 1 & 2 N/A Installed 80486DX4 1 & 2 Closed N/A 1 & 2 N/A Installed P24D 1 & 2 Closed 2 & 3 1 & 2 1 & 2 Installed P24T 1 & 2 N/A N/A 2 & 3 N/A Installed Note: Pins designated should be in the closed position. CPU TYPE SELECTION Type JP2 RN2 Non SL-enhanced Open Not installed SL-enhanced Closed Installed CPU TYPE SELECTION (P24D & P24T ONLY) Type JP1 JP4 Write back Closed Closed Write through Open Open CPU MULTIPLIER SELECTION Multiplier JP10 2x Pins 1 & 2 closed 2.5x Pins 2 & 3 closed 3x Open VL BUS WAIT STATE SELECTION Setting JP20 0 Pins 1 & 2 closed 1 Pins 2 & 3 closed VL-BUS SPEED SELECTION Setting JP21 <= 33MHz Pins 1 & 2 closed >33 MHz Pins 2 & 3 closed