RELIALOGIC CORPORATION PRIVATE, LTD. R386SX MBC Processor 80386SX Processor Speed 16/25MHz Chip Set C & T Max. Onboard DRAM 16MB Cache None BIOS AMI Dimensions 220mm x 218mm I/O Options Floppy drive interface, IDE interface NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location External battery J7 Turbo LED J11 Power LED & keylock J8 Speaker J12 Reset switch J9 Floppy drive interface P3 Turbo switch J10 IDE interface P4 USER CONFIGURABLE SETTINGS Function Jumper Position » Floppy drive interface enabled J2 Closed Floppy drive interface disabled J2 Open » IDE interface enabled J3 Closed IDE interface disabled J3 Open » Factory configured - do not alter J4 Open » Monitor type select CGA/EGA/VGA J5 pins 1 & 2 closed Monitor type select monochrome J5 pins 2 & 3 closed » Battery type select internal J6 Closed Battery type select external J6 Open DRAM CONFIGURATION (DIPP & SIMM RAM) Size Bank 0 Bank 1 Parity Bank 2 Bank 3 Chip 512KB (2) 44256 (2) 44256 (2) 41256 NONE NONE 1MB (4) 44256 (4) 44256 (4) 41256 NONE NONE 1.5MB (4) 44256 (4) 44256 (4) 41256 (2) 256K NONE x 9 2MB (4) 44256 (4) 44256 (4) 41256 (2) 256K (2) 256K x 9 x 9 2MB NONE NONE NONE (2) 1M x NONE 9 3MB (4) 44256 (4) 44256 (4) 41256 (2) 1M x (2) 256K 9 x 9 4MB NONE NONE NONE (2) 1M x (2) 1M x 9 9 5MB (4) 44256 (4) 44256 (4) 41256 (2) 1M x (2) 1M x 9 9 9MB (4) 44256 (4) 44256 (4) 41256 (2) 4M x NONE 9 16MB NONE NONE NONE (2) 4M x (2) 4M x 9 9 Note: When installing 512KB, only U32, U33, U37, U38,U41 & U42 are used. DRAM JUMPER CONFIGURATION Bank 0 Bank 1 Parity Bank 2 Bank 3 J13, J14 & Chip J15 (2) 44256 (2) 44256 (2) 41256 NONE NONE 1 & 2, 3 & 4, 5 & 6, 7 & 8 (4) 44256 (4) 44256 (4) 41256 NONE NONE 1 & 2, 3 & 4, 5 & 6, 7 & 8 (4) 44256 (4) 44256 (4) 41256 (2) 256K NONE 1 & 2, 3 & x 9 4, 5 & 6, 7 & 8 (4) 44256 (4) 44256 (4) 41256 (2) 256K (2) 256K 1 & 2, 3 & x 9 x 9 4, 5 & 6, 7 & 8 NONE NONE NONE (2) 1M x NONE 1 & 3, 2 & 9 4, 5 & 7, 6 & 8 (4) 44256 (4) 44256 (4) 41256 (2) 1M x (2) 256K 1 & 2, 3 & 9 x 9 4, 5 & 6, 7 & 8 NONE NONE NONE (2) 1M x (2) 1M x 1 & 3, 2 & 9 9 4, 5 & 7, 6 & 8 (4) 44256 (4) 44256 (4) 41256 (2) 1M x (2) 1M x 1 & 2, 3 & 9 9 4, 5 & 6, 7 & 8 (4) 44256 (4) 44256 (4) 41256 (2) 4M x NONE 1 & 2, 3 & 9 4, 5 & 6, 7 & 8 NONE NONE NONE (2) 4M x (2) 4M x 1 & 3, 2 & 9 9 4, 5 & 7, 6 & 8 Note:Pins designated should be in the closed position.