TMC RESEARCH CORPORATION PET48PN Processor 80486SX/80487SX/80486DX/ODP487SX/80486DX2 Processor Speed 20/25/33/40(internal)/50(internal)/50/66(internal)MHz Chip Set OPTI Max. Onboard DRAM 128MB SRAM Cache 64/128/256/512KB BIOS AMI Dimensions 220mm x 240mm I/O Options 32-bit VESA card slot (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location IDE interface LED J4 Reset switch J5 pins 9 and 19 Speaker J5 pins 1-4 IDE interface LED J5 pins 10 and 20 Turbo switch J5 pins 7 and 32-bit VESA card S1 & S2 17 (2) Turbo LED J5 pins 8 and 18 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP5 closed Monitor type select monochrome JP5 open » Channel ready select normal JP7 open Channel ready select EXRDY signal JP7 closed generated DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 RNE1-RNE5 RNF1-RNF5 4MB (4) 1M NONE NONE NONE closed open x 9 4MB NONE NONE (1) 1M NONE open closed x 36 8MB (4) 1M (4) 1M NONE NONE closed open x 9 x 9 8MB NONE NONE (1) 1M (1) 1M open closed x 36 x 36 12MB (4) 1M (4) 1M (1) 1M NONE closed open x 9 x 9 x 36 12MB (4) 1M NONE (1) 1M (1) 1M open closed x 9 x 36 x 36 16MB (4) 1M (4) 1M (1) 1M (1) 1M closed open x 9 x 9 x 36 x 36 16MB (4) 4M NONE NONE NONE closed open x 9 16MB NONE NONE NONE NONE closed open 20MB (4) 4M (4) 1M (1) 4M NONE open closed x 9 x 9 x 36 20MB NONE NONE (1) 4M (1) 1M open closed x 36 x 36 24MB (4) 4M (4) 1M (1) 1M NONE closed open x 9 x 9 x 36 28MB (4) 4M (4) 1M (1) 1M (1) 1M closed open x 9 x 9 x 36 x 36 32MB (4) 4M (4) 4M NONE NONE closed open x 9 x 9 32MB NONE NONE (1) 4M (1) 4M open closed x 36 x 36 36MB (4) 4M (4) 4M (1) 1M NONE closed open x 9 x 9 x 36 36MB (4) 4M NONE (1) 4M (1) 4M open closed x 9 x 36 x 36 40MB (4) 4M (4) 4M (1) 1M (1) 1M closed open x 9 x 9 x 36 x 36 40MB (4) 4M NONE (1) 1M (1) 4M open closed x 9 x 36 x 36 48MB (4) 4M (4) 4M (1) 4M NONE closed open x 9 x 9 x 36 48MB (4) 4M NONE (1) 4M (1) 4M open closed x 9 x 36 x 36 52MB (4) 4M (4) 1M (1) 4M (1) 4M closed open x 9 x 9 x 36 x 36 64MB (4) 4M (4) 4M (1) 4M (1) 4M closed open x 9 x 9 x 36 x 36 128MB (4) (4) NONE NONE closed open 16M x 16M x 9 9 SRAM RESISTOR CONFIGURATION Size RNA1/RNA2 RNB1/RNB2 RNC1/RNC2 RND1/RND2 64KB closed open open open 128KB open closed open open 256KB open open closed open 512KB open open open closed SRAM CONFIGURATION Size Cache SRAM Location TAG(U43) TAG(U44 & U55) 64KB (8) 8K x 8 Banks 0 & 1 (1) 8K x 8 (2) 16K x 1 128KB (4) 32K x Bank 0 (1) 8K x 8 (2) 16K x 1 8 256KB (8) 32K x Banks 0 & 1 (1) 32K x 8 (2) 16K x 1 8 512KB (4) 128K x Bank 0 (1) 32K x 8 (2) 64K x 1 8 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 CPU SPEED JUMPER CONFIGURATION CPU JP2 JP3 JP4 JP8 JP9 W7 W8 W9 W10 20MHz 1 & 1 & 2 & open open open closed open open 2 2 3 25MHz 1 & 1 & 2 & open open open open closed open 2 2 3 33MHz 1 & 2 & 2 & open open closed open open open 2 3 3 40(internal)MHz 1 & 1 & 2 & open open open closed open open 2 2 3 50(internal)MHz 1 & 1 & 2 & open open open open closed open 2 2 3 50MHz 2 & 2 & 1 & closed closed open open closed open 3 3 2 66(internal)MHz 1 & 2 & 2 & open open open open open closed 2 3 3 Note:JP8 and JP9 are VESA bus speed select. W7 - W10 are clock source jumpers.