MYLEX CORPORATION EM386X Processor 80386DX Processor Speed 25/33MHz Chip Set Unidentified Max. Onboard DRAM 32MB Cache 16/32/64/128KB BIOS AMI/Award/Mylex/Phoenix Dimensions 305mm x 330mm I/O Options 32-bit Intel slots (2), 32-bit external memory card NPU Options 80287/80387DX/3167 [Image] CONNECTIONS Purpose Location Purpose Location External battery BAT Power LED & keylock J17 Turbo switch J6 Reset switch J18 Single-step control J10 32-bit Intel slots SL1 & SL2 switch Speaker connector J14 32-bit external SL3 memory card Turbo LED J16 USER CONFIGURABLE SETTINGS Function Jumper Position I/O bus speed select 1 wait J1 Closed states I/O bus speed select 2 wait J1 Open states » Factory configured - do not alter J2 Closed » Monitor type select monochrome J3 pins 1 & 2 closed Monitor type select color J3 pins 2 & 3 closed » AT bus DRAM refresh signal J4 Closed disabled AT bus DRAM refresh signal J4 Open enabled » 80386 1) 4K x 4 32KB 1 (8) 4K x 4 (8) 4K x 4 (>1) 16K x 4 32KB 2 (8) 8K x 4 NONE (>1) 16K x 4 64KB (8) 16K x 4 NONE (>1) 16K x 4 128KB (8) 16K x 4 (8) 16K x 4 (>1) 16K x 4 Note: The exact location and number of tag chips is unidentified. CACHE JUMPER CONFIGURATION Size J7 J8 J12 J29 J31 16KB pins 5 & 6 pins 3 & 4 pins 5 & 6 Open pins 1 & 2 closed closed closed closed 32KB 1 pins 5 & 6 pins 5 & 6 pins 5 & 6 Closed pins 5 & 6 closed closed closed closed 32KB 2 pins 5 & 6 pins 5 & 6 pins 5 & 6 Open pins 1 & 2 closed closed closed closed 64KB pins 5 & 6 pins 5 & 6 pins 3 & 4 Open pins 1 & 2 closed closed closed closed 128KB pins 3 & 4 pins 5 & 6 pins 3 & 4 Closed pins 3 & 4 closed closed closed closed CACHE JUMPER CONFIGURATION (CON’T) Size J36 J39 J51 J52 16KB pins 2 & 3 pins 5 & 6 pins 2 & 3 pins 2 & 3 closed closed closed closed 32KB 1 pins 2 & 3 pins 7 & 8 pins 2 & 3 pins 2 & 3 closed closed closed closed 32KB 2 pins 2 & 3 pins 5 & 6 pins 2 & 3 pins 2 & 3 closed closed closed closed 64KB pins 1 & 2 pins 5 & 6 pins 1 & 2 pins 1 & 2 closed closed closed closed 128KB pins 1 & 2 pins 3 & 4 pins 1 & 2 pins 1 & 2 closed closed closed closed [Image] [Image] DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 DRAM SWITCH CONFIGURATION Size EMS Size SW1/1 SW1/2 SW1/3 SW1/4 1MB NONE On On On On 1MB 0.375MB Off On On On 2MB 1MB On On Off On 2MB 1.375MB Off On Off On 4MB 3MB On On Off Off 4MB 3.375MB Off On Off Off 8MB 7MB Off On Off Off 8MB 7.375MB On Off On On 16MB 13MB On Off On Off 16MB 14.875MB On Off Off On 32MB 30.875MB On Off Off Off DRAM SPEED CONFIGURATION CPU Speed DRAM J25 SW0/5 SW0/6 SW0/7 Speed 25MHz 80ns pins 1 & 2 On On On closed 25MHz 100ns pins 3 & 4 Off Off Off closed 33MHz 60ns pins 1 & 2 On On On closed 33MHz 80ns pins 3 & 4 Off Off Off closed BIOS TYPE CONFIGURATION » Type J21 J24 » 27256 pins 1 & 2 closed pins 2 & 3 closed » 27128 pins 1 & 2 closed pins 1 & 2 closed » 27512 pins 2 & 3 closed pins 2 & 3 closed CACHEABLE AREA SELECTION Cacheable RAM Min. cache SW0/2 SW0/3 SW0/4 size 32MB 128KB N/A Off Off 16MB 64KB N/A On Off 14MB 128KB Off Off On 8MB 128KB On Off On 4MB N/A N/A On On DRAM/CACHE MODE CONFIGURATION DRAM Interleave Cache J19 J20 J1/M J2/M size size 1MB No Any Open 2 & 3 1 & 2 1 & 2 2MB No Any 3 & 4 Open 1 & 2 1 & 2 2MB Yes 16KB Open 1 & 2 1 & 2 3 & 4 2MB Yes 32KB 1 1 & 2 Open 3 & 4 1 & 2 2MB Yes 32KB 2 Open 1 & 2 1 & 2 3 & 4 2MB Yes 64KB Open 1 & 2 1 & 2 3 & 4 2MB Yes 128KB 1 & 2 Open 3 & 4 1 & 2 4MB No Any Open 2 & 3 1 & 2 1 & 2 8MB No Any 5 & 6 Open 1 & 2 1 & 2 8MB Yes 16KB Open 1 & 2 1 & 2 5 & 6 8MB Yes 32KB 1 1 & 2 Open 5 & 6 1 & 2 8MB Yes 32KB 2 Open 1 & 2 1 & 2 5 & 6 8MB Yes 64KB Open 1 & 2 1 & 2 5 & 6 8MB Yes 128KB 1 & 2 Open 5 & 6 1 & 2 16MB No Any Open 2 & 3 1 & 2 1 & 2 32MB No Any 7 & 8 Open 1 & 2 1 & 2 32MB Yes 16KB Open 1 & 2 1 & 2 7 & 8 32MB Yes 32KB 1 1 & 2 Open 7 & 8 1 & 2 32MB Yes 32KB 2 Open 1 & 2 1 & 2 7 & 8 32MB Yes 64KB Open 1 & 2 1 & 2 7 & 8 32MB Yes 128KB 1 & 2 Open 7 & 8 1 & 2 Note: Pins designated should be in the closed position.