REPLY CORPORATION POWERBOARD 55SX Processor 80486SX2/80486DX2/80486DX4 Processor 25/33/50(internal)/66(internal)/100(internal)MHz Speed Chip Set IBM Max. Onboard 64MB DRAM Cache None BIOS Reply Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, 32-bit MCA riser card, parallel port, PS/2 mouse port, serial port, VGA port NPU Options Unidentified [Image] CONNECTIONS Purpose Location Purpose Location Drive power CN1, CN2 IDE interface connector J16 PS/2 mouse port J2 Floppy drive interface J18 Parallel port J3 Speaker J23 Serial port J4 32-bit MCA riser card S1 VGA port J5 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation J7 pins 2 & 3 closed CMOS memory clear J7 pins 1 & 2 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 1M x 36 NONE NONE NONE 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 8MB (1) 2M x 36 NONE NONE NONE 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 12MB (1) 2M x 36 (1) 1M x 36 NONE NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 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) 4M x 36 NONE NONE NONE 20MB (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 20MB (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 NONE 20MB (1) 4M x 36 (1) 1M x 36 NONE NONE 24MB (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 NONE 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 28MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 28MB (1) 4M x 36 (1) 2M x 36 (1) 1M x 36 NONE 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 4M x 36 (1) 2M x 36 (1) 1M x 36 (1) 1M 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) 8M x 36 NONE NONE NONE 36MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 36MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 NONE 36MB (1) 8M x 36 (1) 1M x 36 NONE NONE 40MB (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 40MB (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 NONE 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 44MB (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 (1) 1M x 36 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 44MB (1) 8M x 36 (1) 2M x 36 (1) 1M x 36 NONE 48MB (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 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 DRAM CONFIGURATION (CONT.) Size Bank 0 Bank 1 Bank 2 Bank 3 52MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 52MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 52MB (1) 8M x 36 (1) 4M x 36 (1) 1M x 36 NONE 56MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 56MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 56MB (1) 8M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 56MB (1) 8M x 36 (1) 4M x 36 (1) 2M x 36 NONE 60MB (1) 8M x 36 (1) 4M x 36 (1) 2M x 36 (1) 1M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 4M x 36 (1) 2M x 36 (1) 2M 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 MISCELLANEOUS TECHNICAL NOTE Note: J19 switches CPU frequency, exact configuration information is unidentified.