ICL INDIANA C-SERIES/S-SERIES Processor 80486SX/80486SX2/80486DX/80486DX2/AM486DX4/80486DX4 Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Acer Max. 36MB Onboard DRAM Cache 128/256KB BIOS Acer Dimensions 295mm x 254mm I/O PS/2 mouse port, parallel port, serial ports (2), VGA port, VGA Options feature connector, floppy drive interface, IDE interface NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location VGA port J1 VGA feature connector J6 Parallel port J2 IDE interface 1 J7 Serial port 1 J3 IDE interface 2 J8 Serial port 2 J4 Floppy drive J9 interface PS/2 mouse port J5 DX4 voltage kit JPX4 & JPX5 connectors USER CONFIGURABLE SETTINGS Function Jumper Position » Normal BIOS startup display JP1 pins 1 & 2 closed BIOS displays Acer logo JP1 pins 2 & 3 closed » Password enabled JP2 pins 1 & 2 closed Password disabled JP2 pins 2 & 3 closed » Boot mode select normal boot JP3 pins 1 & 2 closed Boot mode select mono/COM1 boot JP3 pins 2 & 3 closed » First 8MB of memory enabled JP4 pins 1 & 2 closed First 8MB of memory disabled JP4 pins 2 & 3 closed » On-board memory enabled JP5 pins 2 & 3 closed On-board memory disabled JP5 pins 1 & 2 closed » Super I/O chip enabled JP6 pins 2 & 3 closed Super I/O chip disabled JP6 pins 1 & 2 closed » VGA port enabled JP9 pins 2 & 3 closed VGA port disabled JP9 pins 1 & 2 closed » IDE address port select 0F4h, JP10 pins 1 & 2 0F8h, and 0FCh closed IDE address port select 074h, JP10 pins 2 & 3 078h, and 07Ch closed » Reset button mode normal JP28 pins 2 & 3 closed Reset button mode suspend/resume JP28 pins 1 & 2 closed » IDE interface enabled JP29 pins 2 & 3 closed IDE interface disabled JP29 pins 1 & 2 closed » BIOS type select EPROM JPX1 pins 2 & 3 closed BIOS type select flash JPX1 pins 1 & 2 closed » Factory configured - do not alter JPX3 N/A DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 4MB (8) 441000 NONE NONE 8MB (8) 441000 (1) 1M x 36 NONE 12MB (8) 441000 (1) 1M x 36 (1) 1M x 36 20MB (8) 441000 (1) 4M x 36 NONE 24MB (8) 441000 (1) 4M x 36 (1) 1M x 36 36MB (8) 441000 (1) 4M x 36 (1) 4M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 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 JP30 JP31 128KB pins 1 & 2 closed pins 1 & 2 closed 256KB pins 2 & 3 closed pins 2 & 3 closed CPU TYPE CONFIGURATION Type JPX2 JP13 JP14 JP15 JP17 80486SX 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486SX2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 AM486DX4 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX4 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP18 JP19 JP20 JP21 JP22 80486SX 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486SX2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 80486DX 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2 80486DX2 2 & 3 1 & 2 2 & 3 2 & 3 1 & 2 AM486DX4 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 80486DX4 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP23 JP25 JP26 JP27 JP32 80486SX 2 & 3 2 & 3 2 & 3 3 & 4 1 & 2 80486SX2 2 & 3 2 & 3 2 & 3 3 & 4 1 & 2 80486DX 2 & 3 2 & 3 1 & 2 3 & 4 1 & 2 80486DX2 2 & 3 2 & 3 1 & 2 3 & 4 1 & 2 AM486DX4 2 & 3 2 & 3 2 & 3 3 & 4 1 & 2 80486DX4 2 & 3 2 & 3 2 & 3 3 & 4 1 & 2 Note: Pins designated should be in the closed position. The locations of JP27 & JP32 are unidentified. CPU SPEED CONFIGURATION Speed JP11 JP12 25MHz pins 1 & 5 closed pins 2 & 3 closed 33MHz pins 2 & 6 closed pins 2 & 3 closed 50iMHz pins 1 & 5 closed pins 2 & 3 closed 66iMHz pins 2 & 6 closed pins 2 & 3 closed 75iMHz pins 1 & 5 closed pins 2 & 3 closed 100iMHz pins 2 & 6 closed pins 2 & 3 closed CPU SPEED CONFIGURATION (80486DX4 ONLY) Speed JP27 2x pins 2 & 3 closed 2.5x pins 1 & 2 closed 3x pins 3 & 4 closed CPU VOLTAGE CONFIGURATION (80486DX4-100 ONLY) Voltage JMP1 3.45v pins 1 & 5 closed 3.6v pins 2 & 6 closed 3.8v pins 3 & 7 closed 4v pins 4 & 8 closed Note: JMP1 is located on the voltage regulator. PARALLEL PORT DMA CHANNEL CONFIGURATION » DRQ DACK JP7 JP8 » 3 3 pins 1 & 2 pins 1 & 2 closed closed » 3 1 pins 1 & 2 pins 2 & 3 closed closed » 1 3 pins 2 & 3 pins 1 & 2 closed closed » 1 1 pins 2 & 3 pins 2 & 3 closed closed