CSS LABORATORIES, INC. MINIMAX/LITTLE MAX 486 Processor 80486SX/80486DX/80486DX2/Pentium Overdrive Processor Speed 25/33/50(internal)/50/66(internal)MHz Chip Set SIS Max. Onboard 16MB DRAM Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J4 Floppy drive PJ1 interface Reset switch/Turbo LED J5 Parallel port PJ2 Turbo switch (not J6 Serial port 1 PJ3 available on MiniMax) Speaker J9 Serial port 2 PJ4 Equipment panel J39 IDE interface PJ5 connector IDE interface LED J40 Riser Card SL1 IDE interface LED (on LED board IDE) USER CONFIGURABLE SETTINGS Function Jumper Position » CPU speed select iOSC/1 J1 pins 1 & 2 (50/66MHz) closed CPU speed select iOSC/2 J1 pins 2 & 3 (25/33MHz) closed » Ocsillator type select OSC1 J2 pins 1 & 2 (25/50MHz) closed Ocsillator type select OSC3 J2 pins 2 & 3 (33/66MHz) closed » Monitor type select color J3 pins 1 & 2 closed Monitor type select monochrome J3 pins 2 & 3 closed » Factory configured - do not J11 Open alter » Floppy drive interface enabled S4 pins 2 & 3 closed Floppy drive interface disabled S4 pins 1 & 2 closed » IDE interface enabled S5 pins 2 & 3 closed IDE interface disabled S5 pins 1 & 2 closed SERIAL PORT CONFIGURATION (PJ3) Port 1 IRQ S0 S1 PJ6 Disabled N/A pins 1 & 2 pins 1 & 2 N/A closed closed COM1 IRQ4 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed COM2 IRQ3 pins 1 & 2 pins 2 & 3 pins 1 & 3 closed closed closed SERIAL PORT CONFIGURATION (PJ4) Port 2 IRQ S2 S3 PJ6 Disabled N/A pins 1 & 2 pins 1 & 2 N/A closed closed COM1 IRQ4 pins 1 & 2 pins 2 & 3 pins 2 & 4 closed closed closed COM2 IRQ3 pins 2 & 3 pins 2 & 3 pins 3 & 4 closed closed closed PARALLEL PORT CONFIGURATION LPT IRQ P0 P1 PRT Disabled N/A pins 1 & 2 pins 1 & 2 N/A closed closed LPT 1 IRQ7 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed LPT 2 IRQ5 pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed LPT 3 IRQ7 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (1) 256K x 36 NONE 2MB (1) 256K x 36 (1) 256K x 36 2MB (1) 512K x 36 NONE 4MB (1) 1M x 36 NONE 5MB (1) 256K x 36 (1) 1M x 36 6MB (1) 512K x 36 (1) 1M x 36 8MB (1) 1M x 36 (1) 1M x 36 8MB (1) 2M x 36 NONE 10MB (1) 512K x 36 (1) 2M x 36 16MB (1) 2M x 36 (1) 2M x 36 DRAM JUMPER CONFIGURATION Size J8 J10 1MB Open Open 2MB pins 1 & 2 closed pins 2 & 3 closed 2MB pins 2 & 3 closed Open 4MB Open Open 5MB pins 1 & 2 closed pins 2 & 3 closed 6MB pins 2 & 3 closed pins 1 & 2 closed 8MB pins 1 & 2 closed pins 2 & 3 closed 8MB pins 2 & 3 closed Open 10MB pins 2 & 3 closed pins 1 & 2 closed 16MB pins 2 & 3 closed pins 1 & 2 closed Note: This board accepts 4M x 36 SIMMS, but jumper settings are not identified by the manufacturer. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 32K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size W6 W7 W8 W9 64KB Open Open pins 2 & 3 pins 2 & 3 closed closed 128KB Open Closed pins 1 & 2 pins 1 & 2 closed closed 256KB Closed Closed pins 2 & 3 pins 2 & 3 closed closed CPU TYPE CONFIGURATION Type W2 W4 W5 80486SX pins 1 & 2 pins 1 & 2 Closed closed closed 80486DX pins 2 & 3 pins 2 & 3 Open closed closed CPU TYPE CONFIGURATION (OVERDRIVE) Type W1 W3 Overdrive installed pins 1 & 2 closed Closed Overdrive not installed pins 2 & 3 closed Open EQUIPMENT PANEL CONNECTOR PIN OUT Description J39 Ground pin 1 Power pin 1 Hard drive LED pin 3 Not used pin 4 Power pin 5 Ground pin 6 Turbo LED pin 7 Keyboard inhibit pin 8 Power pin 9 Reset button pin 10