ICL MX486 Processor 80486DX Processor Speed 33/50MHz Chip Set Unidentified Max. Onboard DRAM 64MB Cache Unidentified BIOS Unidentified Dimensions 355mm x 305mm I/O Options LCD/BIOS slot, local bus slots, external memory card, external processor board, serial ports (2), parallel port, PS/2 mouse interface, floppy drive interface, IDE interface, LCD interface NPU Options 4167 [Image] CONNECTIONS Purpose Location Purpose Location LCD/BIOS slot SL1 Local bus slots SL8 - SL11 extension slots Local bus slots SL2 - SL7 USER CONFIGURABLE SETTINGS Function Jumper Position » Multiprocessing type select J3 pins 2 & 3 asymmetric closed Multiprocessing type select J3 pins 1 & 2 symmetric closed » CPU speed select 33MHz used J10 Open CPU speed select 33MHz not used J10 Closed » Temperature sensor for second J22 Open 486/33 board in slot 13 Temperature sensor for second J22 Closed 486/50 board in slot 14 » Factory configured - do not alter J257 N/A » Factory configured - do not alter J258 N/A » ISP INT to CPU1 unlatched JP3 pins 1 & 2 closed ISP INT to CPU1 latched JP3 pins 2 & 3 closed » I/O cycles long wait enabled JP7 Closed I/O cycles long wait disabled JP7 Open » Cache type select programmed by JP8 pins 1 & 2 software closed Cache type select write back JP8 pins 2 & 3 closed Cache type select write through JP8 Open [Image] DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 8MB 8MB NONE NONE NONE 12MB 8MB 4MB NONE NONE 16MB 8MB 4MB 4MB NONE 16MB 8MB 8MB NONE NONE 16MB 16MB NONE NONE NONE 24MB 8MB 4MB 4MB 8MB 24MB 8MB 8MB 8MB NONE 24MB 8MB 16MB NONE NONE 32MB 8MB 8MB 8MB 8MB 32MB 16MB 16MB NONE NONE 40MB 8MB 16MB 16MB NONE 48MB 16MB 16MB 16MB NONE 56MB 8MB 16MB 16MB 16MB 64MB 16MB 16MB 16MB 16MB Note: Memory is installed by using ICL modules. [Image] USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not J1 N/A alter » Factory configured - do not JP1 pins 2 & 3 alter closed » Factory configured - do not JP2 pins 1 & 2 alter closed » Factory configured - do not JP3 Closed alter CACHE CONFIGURATION Note: The size and configuration of the cache is unidentified. [Image] CONNECTIONS Purpose Location Purpose Location System board connector CN1 Serial port 1 CN7 System board connector CN2 Serial port 2 CN8 System board connector CN3 Parallel port CN9 System board connector CN4 PS/2 mouse connector CN10 Chassis fan power CN5 Keyboard connector CN11 Chassis fan power CN6 Note: Jumper sizes may not be exact. They are shown for location purposes only. USER CONFIGURABLE SETTINGS Function Jumper Position » IRQ select IRQ7 CON3 pins 2 & 3 closed IRQ select IRQ5 CON3 pins 1 & 2 closed » Motor drive spindle speed select CON4 Open single speed Motor drive spindle speed select CON4 Closed double speed » Pre-compensation mode select CON5 Closed normal Pre-compensation mode select CON5 Open alternate [Image] CONNECTIONS Purpose Location Purpose Location Temperature sensor CON1 Floppy drive cn2 interface interface Chassis fan power CON2 IDE interface cn3 Floppy drive cn1 interface USER CONFIGURABLE SETTINGS Function Jumper Position » Floppy drives write protect CON15 pins 1 & 2 disabled closed Floppy drives write protect CON15 pins 2 & 3 enabled closed » Factory configured - do not CON16 N/A alter » Factory configured - do not CON17 N/A alter [Image] CONNECTIONS Purpose Location LCD interface CN1 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not alter JP1 Closed » INT 2 asymmetric JP2 pins 2 & 3 closed INT 2 symmetric JP2 pins 1 & 2 closed » Safe operation enabled JP3 pins 2 & 3 closed Micro-switch override JP3 pins 1 & 2 closed » INT ACK 2 asymmetric JP6 pins 2 & 3 closed INT ACK 2 symmetric JP6 pins 1 & 2 closed » Keyboard/mouse lock set by key JP20 pins 1 & 2 closed Keyboard/mouse enabled JP20 pins 2 & 3 closed Keyboard/mouse locked JP20 Open » I/O CHK# disabled JP21 Open /O CHK# enabled JP21 Closed » 3-mode diskette primary address JP22 pins 1 & 2 enabled closed 3-mode diskette secondary address JP22 pins 2 & 3 enabled closed » VCCAUX 5v auxiliary enabled JP23 Open VCCAUX 5v auxiliary disabled JP23 Closed » DCM COM port access, lower 64KB JP34 pins 2 & 3 memory installed closed DCM COM port access, upper 64KB JP34 pins 1 & 2 memory installed closed » Factory configured - do not alter J250 N/A » Factory configured - do not alter J257 N/A » Factory configured - do not alter J258 N/A » Factory configured - do not alter J259 N/A USER CONFIGURABLE SETTINGS (CON’T) Function Jumper Position » Factory configured - do not J261 N/A alter » Factory configured - do not J262 N/A alter » Factory configured - do not JSW1/1 N/A alter » Factory configured - do not JSW1/2 N/A alter » Factory configured - do not JSW1/3 N/A alter » Factory configured - do not JSW1/4 N/A alter » Factory configured - do not JSW1/5 N/A alter » RAM test enabled JSW1/6 Off RAM test disabled JSW1/6 On » COM port speed set by ECU JSW1/7 Off COM1 = 9600, n, 8, 1 & COM2 = JSW1/7 On 2400, n, 8, 1 » Password disabled JSW1/8 On Password enabled JSW1/8 Off Note: The location of JP34 is unidentified. EISA MEMORY CONFIGURATION Setting JP31 JP32 JP33 1C000H - 1FFFFH pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed 18000H - 1BFFFH pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed 14000H - 17FFFH pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed 10000H - 13FFFH pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed 0C000H - 0FFFFH pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 08000H - 0BFFFH pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed 04000H - 07FFFH pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed 00000H - 03FFFH pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed