EVEREX SYSTEMS, INC. TEMPO VAV Processor 80486SX/80486DX/486Overdrive/80486DX2 Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Unidentified Maximum Onboard 64MB Memory Cache 64/128/2564KB BIOS Unidentified Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse interface, serial ports (2), VGA feature connector, VGA interface NPU Options None [Image] CONNECTIONS Function Label Function Label VGA interface CN1 Turbo LED J2 Parallel port CN2 Power LED & keylock J3 Serial ports CN3 Reset switch J4 Floppy drive CN4 PS/2 mouse interface J5 interface IDE interface CN5 IDE interface LED J6 VGA feature connector CN6 32-bit VESA local bus SL1 & SL2 slots Chassis fan power J1 USER CONFIGURABLE SETTINGS Setting Label Position » On board video enabled J10 Pins 2 & 3 closed On board video disabled J10 Pins 1 & 2 closed » Video IRQ9 disabled J11 Open Video IRQ9 enabled J11 Closed » Jumper information unavailable JC7 N/A » Jumper information unavailable JP1 N/A DRAM 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 3MB (1) 256K x (1) 256K x (1) 256K x None 36 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 1M x 36 None None None 5MB (1) 1M x 36 (1) 256K x None None 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x None 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 None None 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 17MB (1) 4M x 36 (1) 256K x None None 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x None 36 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 20MB (1) 4M x 36 (1) 1M x 36 None None 21MB (1) 4M x 36 (1) 1M x 36 (1) 256K x None 36 22MB (1) 4M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 None 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 4M x 36 (1) 4M x 36 None None 33MB (1) 4M x 36 (1) 4M x 36 (1) 256K x None 36 34MB (1) 4M x 36 (1) 4M x 36 (1) 256K x (1) 256K x 36 36 36MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 None 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M 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 SIZE 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 Size JS1 JS2 JS3 64KB Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed 128KB Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 256KB Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed CPU TYPE Setting JC1 JC2 JC3 80486SX Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed 80486DX Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed 486 Overdrive Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486DX2 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed CPU SPEED Setting JK5 25MHz Pins 3 & 4 closed 33MHz Pins 1 & 2, 7 & 8 closed 50iMHz Pins 3 & 4 closed 66iMHz Pins 1 & 2, 7 & 8 closed CPU CLOCK SPEED Setting JK1 JK2 1x Pins 1 & 2 closed Pins 2 & 3 closed 2x Pins 2 & 3 closed Pins 1 & 2 closed VIDEO MEMORY Size Bank 0 Bank 1 1MB (1) 256K x 16 (1) 256K x 16