MONOLITHIC SYSTEMS, INC. (COLORADO MSI) MICROFRAME 486P Processor 80486SX/80487SX/80486DX/80486DX2 Processor Speed 25/33/50/66(internal)MHz Chip Set C & T PEAK DM Max. Onboard DRAM 32MB Cache 128KB BIOS AMI Dimensions 330mm x 218mm I/O Options Bus mouse connector NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Auxiliary keyboard J15 IDE interface LED J3 Bus mouse J19 Front panel composite J6 Speaker J27 cable Ready LED J7 Power LED & keylock J44 Reset switch J8 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation J2 Open CMOS memory clear J2 Closed » Factory configured - do not alter J9 Open » Factory configured - do not alter J10 pins 2 & 3 closed » Factory configured - do not alter J11 Closed » Factory configured - do not alter J17 pins 2 & 3 closed » Monitor type select color J18 pins 2 & 3 closed Monitor type select monochrome J18 pins 1 & 2 closed » Factory configured - do not alter J20 pins 1 & 2 closed » Bus mouse enabled J21 Closed Bus mouse disabled J21 Open » Factory configured - do not alter J22 pins 1 & 2 closed » Factory configured - do not alter J23 pins 2 & 3 closed » Factory configured - do not alter J24 Open » Cache enabled J32 pins 1 & 2 closed Cache disabled J32 pins 2 & 3 closed » DMA signal select active high J35 pins 1 & 2 closed DMA signal select active low J35 pins 2 & 3 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 3MB (1) 512K x (1) 256K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 5MB (1) 1M x 36 (1) 256K x NONE NONE 36 6MB (1) 512K x (1) 1M x 36 NONE NONE 36 7MB (1) 512K x (1) 1M x 36 (1) 256K x NONE 36 36 8MB (1) 2M x 36 NONE NONE NONE 9MB (1) 2M x 36 (1) 256K x NONE NONE 36 10MB (1) 2M x 36 (1) 512K x NONE NONE 36 11MB (1) 2M x 36 (1) 512K x (1) 256K x NONE 36 36 12MB (1) 2M x 36 (1) 1M x 36 NONE NONE 13MB (1) 2M x 36 (1) 1M x 36 (1) 256K x NONE 36 14MB (1) 2M x 36 (1) 512K x (1) 1M x 36 NONE 36 15MB (1) 2M x 36 (1) 512K x (1) 1M x 36 (1) 256K x 36 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 17MB (1) 2M x 36 (1) 2M x 36 (1) 256K x NONE 36 18MB (1) 2M x 36 (1) 2M x 36 (1) 512K x NONE 36 19MB (1) 2M x 36 (1) 2M x 36 (1) 512K x (1) 256K x 36 36 20MB (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 NONE 21MB (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 (1) 256K x 36 22MB (1) 2M x 36 (1) 2M x 36 (1) 512K x (1) 1M x 36 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 25MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 256K x 36 26MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 512K x 36 28MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 CACHE CONFIGURATION Size Bank 0 TAG 128KB (4) 32K x 8 (1) 32K x 8 CPU TYPE CONFIGURATION Type J12 J13 J14 80486SX Open pins 2 & 3 Open closed 80487SX Closed pins 2 & 3 pins 2 & 3 closed closed 80486DX Closed pins 1 & 2 pins 1 & 2 closed closed 80486DX2 Closed pins 1 & 2 pins 1 & 2 closed closed