TMC RESEARCH CORPORATION PAT48PR Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 25/33/50(internal)/50/66(internal)MHz Chip Set OPTI Max. Onboard DRAM 64MB SRAM Cache 64/128/256KB BIOS AMI Dimensions 220mm x 240mm I/O Options 32-bit VESA local bus slot (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Speaker J1/pins 1-4 IDE interface LED J1 pins 10 & 20 Turbo switch J1/pins 7 & 17 IDE interface LED J2 Turbo LED J1/pins 8 & 18 External battery J4 Reset switch J1/pins 9 & 19 32-bit VESA local S1 & S2 bus card (2) USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 pins 2 & 3 (internal battery) closed » CMOS memory normal operation JP1 open (external battery) CMOS memory clear JP1 pins 1 & 2 closed » Monitor type select color JP4 closed Monitor type select monochrome JP4 open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 RNB1 & RNC1 & RNB2 RNC2 1MB (4) NONE NONE NONE open closed 256K x 9 2MB (4) (4) NONE NONE open closed 256K x 256K x 9 9 4MB (4) 1M NONE NONE NONE open closed x 9 4MB NONE NONE (1) 1M NONE closed open x 36 5MB (4) 1M (4) NONE NONE open closed x 9 256K x 9 6MB (4) (4) (1) 1M NONE open closed 256K x 256K x x 36 9 9 8MB (4) 1M (4) 1M NONE NONE open closed x 9 x 9 8MB NONE NONE (1) 1M (1) 1M closed open x 36 x 36 9MB (4) (4) 1M (1) 1M NONE open closed 256K x x 9 x 36 9 10MB (4) (4) (1) 1M (1) 1M open closed 256K x 256K x x 36 x 36 9 9 12MB (4) 1M (4) 1M (1) 1M NONE open closed x 9 x 9 x 36 13MB (4) (4) 1M (1) 1M (1) 1M open closed 256K x x 9 x 36 x 36 9 16MB (4) 1M (4) 1M (1) 1M (1) 1M open closed x 9 x 9 x 36 x 36 16MB (4) 4M NONE NONE NONE open closed x 9 16MB NONE NONE (1) 4M NONE closed open x 36 20MB (4) 4M (4) 1M NONE NONE open closed x 9 x 9 20MB NONE NONE (1) 4M (1) 1M closed open x 36 x 36 24MB (4) 4M (4) 1M (1) 1M NONE open closed x 9 x 9 x 36 28MB (4) 4M (4) 1M (1) 1M (1) 1M open closed x 9 x 9 x 36 x 36 32MB (4) 4M (4) 4M NONE NONE open closed x 9 x 9 32MB NONE NONE (1) 4M (1) 4M closed open x 36 x 36 36MB (4) 4M (4) 4M (1) 1M NONE open closed x 9 x 9 x 36 40MB (4) 4M (4) 4M (1) 1M (1) 1M open closed x 9 x 9 x 36 x 36 48MB (4) 4M (4) 4M (1) 4M NONE open closed x 9 x 9 x 36 52MB (4) 4M (4) 4M (1) 4M (1) 1M open closed x 9 x 9 x 36 x 36 52MB (4) 4M (4) 1M (1) 4M (1) 4M open closed x 9 x 9 x 36 x 36 64MB (4) 4M (4) 4M (1) 4M (1) 4M open closed x 9 x 9 x 36 x 36 SRAM CONFIGURATION Size Cache Location TAG(U43) TAG(U44) 64KB (8) 8K x 8 Banks 0 & 1 (1) 8K x 8 (1) 64K x 1 128KB (4) 32K x 8 Bank 0 (1) 8K x 8 (1) 64K x 1 256KB (8) 32K x 8 Banks 0 & 1 (1) 32K x 8 (1) 64K x 1 SRAM RESISTOR CONFIGURATION Size RND RNE RNF 64KB closed open open 128KB open closed open 256KB open open closed CPU JUMPER CONFIGURATION CPU RNA3 RNB3 RNC3 80486DX2 closed open open ODP486SX open closed open 80486DX closed open open 80487SX open closed open 80486SX open open closed VESA CARDS SUPPORTED JUMPER CONFIGURATION # of VESA cards W21 W22 W23 2 closed closed pins 1 & 2 closed 1 W21/pin 1 connected to W22/pin1 pins 2 & 3 closed Note: The manufacturer recommends that only one VESA card be used with a 486DX-50MHz. CPU SPEED JUMPER CONFIGURATION CPU JP2 JP3 JP5 & W13 W14 W15 W16 JP6 25MHz pins pins open open open closed open 2 & 3 1 & 2 33MHz pins pins open open open open closed 2 & 3 1 & 2 50iMHz pins pins open open open closed open 2 & 3 1 & 2 50MHz pins pins closed open open closed open 1 & 2 2 & 3 66iMHz pins pins open open open open closed 2 & 3 1 & 2 Note:W13 - W16 need only be configured if a 20-pin clock generator is installed in U29. JP3 is AT bus clock select. JP5 and JP6 are VESA bus clock select. Pins designated are in the closed position.