MICRONICS COMPUTERS, INC. JX30G VL-BUS Processor 80486SX/80486DX/80486DX2/Pentium Overdrive Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Micronics Max. Onboard DRAM 64MB Cache 64/128/256KB BIOS Phoenix Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location IDE interface CN2 Speaker J30 Floppy drive CN3 Power LED & J31 interface keylock External battery J8 32-bit VESA Local S1 bus slot Serial port 2 J9 32-bit VESA Local S2 bus slot External keyboard/PS2 J10 Turbo LED W18 style mouse Serial port 1 J14 Reset switch W20 Parallel port J16 IDE interface LED W21 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Factory configured - do not SW1/switch 3 Off alter » Factory configured - do not SW1/switch 4 Off alter » Monitor type select color W2 Closed Monitor type select monochrome W2 Open » PS/2 mouse enabled W3 Closed PS/2 mouse disabled W3 Open » Parity enabled W4 Closed Parity disabled W4 Open » Factory configured - do not W6 Open alter » Parallel port unidirectional W7 pins 1 & 2 (for printer) closed Parallel port bi-directional W7 pins 2 & 3 closed » CMOS memory normal operation W8 pins 2 & 3 closed CMOS memory clear W8 pins 1 & 2 closed » Factory configured - do not W9 Open alter » Factory configured - do not W25 N/A alter » Factory configured - do not W26 N/A alter REAL TIME CLOCK SETTINGS Settings W1 W5 DALLAS Real Time Clock enabled Closed N/A MOTOROLA 146818 Real Time Clock Open N/A enabled DALLAS Real Time Clock clear N/A Closed Real time clock normal operation N/A Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 6MB (1) 256K x (1) 256K x (1) 1M x 36 NONE 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 4M x 36 NONE NONE NONE 18MB (1) 256K x (1) 256K x (1) 4M x 36 NONE 36 36 20MB (1) 1M x 36 (1) 4M x 36 NONE NONE 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG/U34 TAG/U61 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 8K x 8 128KB (4) 32K x NONE (1) 32K x 8 (1) 32K x 8 8 256KB (4) 32K x (4) 32K x (1) 32K x 8 (1) 32K x 8 8 8 Note:If Write-Through caching is not being used, the chip at U61 is not installed. CACHE JUMPER CONFIGURATION Size W10 W11 W22 W23 W24 64KB 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2 128KB 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 256KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note:Pins designated should be in the closed position. CACHING METHOD CONFIGURATION Method Size W16 W17 Write-Through All Open Open Write-Back 64KB pins 1 & 2 closed pins 1 & 2 closed Write-Back 128KB pins 1 & 2 closed pins 2 & 3 closed Write-Back 256KB pins 2 & 3 closed pins 2 & 3 closed CPU TYPE CONFIGURATION Type W12 80486SX pins 1 & 2 closed 80486DX pins 2 & 3 closed 804896DX2 pins 2 & 3 closed Pentium Overdrive pins 2 & 3 closed CPU PQFP CONFIGURATION PQFP W13 Enabled pins 1 & 2 closed Disabled pins 2 & 3 closed CPU SPEED CONFIGURATION Speed SW1/switch 1 SW1/switch 2 25MHz Off On 33MHz On On 50i MHz Off On 66i MHz On On