MICRONICS COMPUTERS, INC. 80486 ASIC SYSTEM BOARD Processor 80486DX Processor Speed 33MHz Chip Set Micronics Max. Onboard DRAM 64MB Cache 64/128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options None NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location External battery J13 Turbo LED W9 connector Speaker J30 Reset switch W10 Keylock J31 Turbo switch W11 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Factory configured-do not SW1/1 Off alter » Factory configured-do not SW1/2 Off alter » Factory configured-do not SW1/3 Off alter » Factory configured-do not SW1/4 Off alter » Factory configured-do not SW1/5 Off alter » Factory configured-do not SW1/6 Off alter » Video BIOS cacheable SW1/7 Off Video BIOS not cacheable SW1/7 On » Factory configured-do not SW1/8 Off alter » 70ns DRAM select SW2/6 Off 80ns DRAM select SW2/6 On 64KB or 256KB cache select SW2/7 Off 128KB cache select SW2/7 On 64KB cache select SW2/8 Off 128KB or 256KB cache select SW2/8 On CACHE CONFIGURATION Size Bank 0 Bank 1 64KB (4) 8K x 8 (4) 8K x 8 128KB (4) 32K x 8 None 256KB (4) 32K x 8 (4) 32K x 8 CACHE JUMPER CONFIGURATION Size W5 W6 128KB or 256KB Closed N/A 64KB Open N/A 256KB N/A Closed 64KB or 128KB N/A Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256KB x NONE NONE NONE 9 2MB (4) 256KB x (4) 256KB x NONE NONE 9 9 3MB (4) 256KB x (4) 256KB x (4) 256KB x NONE 9 9 9 4MB (4) 256KB x (4) 256KB x (4) 256KB x (4) 256KB x 9 9 9 9 4MB (4) 1MB X 9 NONE NONE NONE 5MB (4) 256KB x (4) 1MB x 9 NONE NONE 9 6MB (4) 256KB x (4) 256KB x (4) 1MB x 9 NONE 9 9 7MB (4) 256KB x (4) 256KB x (4) 256KB x (4) 1MB x 9 9 9 9 8MB (4) 1MB x 9 (4) 1MB x 9 NONE NONE 9MB (4) 256KB x (4) 1MB x 9 (4) 1MB x 9 NONE 9 10MB (4) 256KB x (4) 256KB x (4) 1MB x 9 (4) 1MB x 9 9 9 12MB (4) 1MB x 9 (4) 1MB x 9 (4) 1MB x 9 NONE 13MB (4) 256KB x (4) 1MB x 9 (4) 1MB x 9 (4) 1MB x 9 9 DRAM CONFIGURATION (CONTINUED) Size Bank 0 Bank 1 Bank 2 Bank 3 16MB (4) 1MB x 9 (4) 1MB x 9 (4) 1MB x 9 (4) 1MB x 9 16MB (4) 4MB x 9 NONE NONE NONE 20MB (4) 1MB x 9 (4) 4MB x 9 NONE NONE 24MB (4) 1MB x 9 (4) 1MB x 9 (4) 4MB x 9 NONE 28MB (4) 1MB x 9 (4) 1MB x 9 (4) 1MB x 9 (4) 4MB x 9 32MB (4) 4MB x 9 (4) 4MB x 9 NONE NONE 36MB (4) 1MB x 9 (4) 4MB x 9 (4) 4MB x 9 NONE 40MB (4) 1MB x 9 (4) 1MB x 9 (4) 4MB x 9 (4) 4MB x 9 48MB (4) 4MB x 9 (4) 4MB x 9 (4) 4MB x 9 NONE 52MB (4) 1MB x 9 (4) 4MB x 9 (4) 4MB x 9 (4) 4MB x 9 64MB (4) 4MB x 9 (4) 4MB x 9 (4) 4MB x 9 (4) 4MB x 9 DRAM SWITCH CONFIGURATION Size SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 1MB On On On On On 2MB Off On On On On 3MB On Off On On On 4MB Off Off On On On 4MB On On Off On On 5MB On On Off On On 6MB On Off On Off On 7MB Off On On Off On 8MB Off On Off On On 9MB On Off Off Off On 10MB Off Off On Off On 12MB On Off Off On On 13MB Off Off Off Off On 16MB Off Off Off On On 16MB On On Off On Off 20MB On On Off Off Off 24MB On Off On Off Off 28MB Off On On Off Off 32MB Off On Off On Off 36MB On Off Off Off Off 40MB Off Off On Off Off 48MB On Off Off On Off 52MB Off Off Off Off Off 64MB Off Off Off On Off