MNC INTERNATIONAL, INC. MNC 1144 COMPLETE 486SBC (Rev. 2.10) Processor 80486SX/80487SX/80486DX/8486DX2 Processor Speed 25/33/50(internal)/50/66(internal) Chip Set VSLI Max. Onboard DRAM 32MB Cache None BIOS Phoenix Dimensions 333mm x 107mm I/O Options Floppy drive interface, IDE interface, parallel port, serial port (2), VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location IDE interface LED J1 Serial port 2 P4 Turbo LED J5 Front panel switches P5 IDE interface P1 LCD screen P6 Floppy drive interface P2 VGA port P7 Serial port 1 P3 Parallel port P8 DRAM CONFIGURATION Size Bank 0 Bank 1 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 USER CONFIGURABLE SETTINGS Function Jumper Position » IDE interface enabled J2 pins 2 & 3 closed IDE interface disabled J2 pins 1 & 2 closed » Floppy drive interface select J3A pins 2 & 3 normal operation closed Floppy drive interface select J3A pins 1 & 2 encoded closed » Floppy drive interface enabled J3B pins 2 & 3 closed Floppy drive interface disabled J3B pins 1 & 2 closed » J3 Jumper settings enabled J3H pins 2 & 3 closed J3 Jumper settings disabled J3H pins 1 & 2 closed Watchdog Timer interval select 1.2 J4 pins 1 & 2 second closed Watchdog Timer interval select J4 pins 2 & 3 150ms closed Watchdog Timer interval select J4 open 600ms » Watchdog Timer enabled J4A pins 1 & 2 closed Watchdog Timer disabled J4A pins 2 & 3 closed » Monitor type select color J7 closed Monitor type select monochrome J7 open Paralell port select J9 pins 2 & 3 Uni-directional closed Paralell port select Bi-directional J9 pins 1 & 2 closed » Bus cycle lock enabled J14 closed Bus cycle lock disabled J14 open » Burst mode enabled J17 closed Burst mode disabled J17 open » Secondary cache disabled J18 open Secondary cache enabled J18 closed » VGA port interrupt request select J20 pins 1 & 2 none closed VGA port interrupt request select J20 pins 2 & 3 IR/FONT> closed Note:To disable Watchdog Timer (J4A) you must cut the trace between pins 1 & 2 on back of board. SERIAL PORT CONFIGURATION Serial port 1 Serial port 2 J3C J3D J3E COM1 COM2 pins 2 & 3 pins 2 & 3 pins 2 & 3 COM1 Disabled pins 2 & 3 pins 1 & 2 pins 2 & 3 COM2 Disabled pins 1 & 2 pins 1 & 2 pins 2 & 3 COM2 COM1 pins 1 & 2 pins 2 & 3 pins 2 & 3 Disabled COM1 pins 1 & 2 pins 2 & 3 pins 1 & 2 Disabled COM2 pins 2 & 3 pins 2 & 3 pins 1 & 2 Disabled Disabled pins 1 & 2 pins 1 & 2 pins 1 & 2 Note:Pins designated should be in the closed position. PARALLEL PORT CONFIGURATION Function J3F J3G » Parallel port (P8) select LPT1 pins 2 & 3 pins 2 & 3 at 378h closed closed Parallel port (P8) select LPT2 pins 1 & 2 pins 2 & 3 at 278h closed closed Parallel port (P8) select LPT3 pins 2 & 3 pins 1 & 2 at 3BCh closed closed Parallel port (P8) disabled pins 1 & 2 pins 1 & 2 closed closed LCD DISPLAY TYPE CONFIGURATION Type J8 0 open 1 pins 1 & 2 closed 2 pins 3 & 4 closed 3 pins 1 & 2 and 3 & 4 closed FLASH MEMORY ADDRESS CONFIGURATION Address J19 C0000 - C7FFF open C8000 - CFFFF pins 3 & 4 closed D0000 - D7FFF pins 1 & 2 closed D8000 - DFFFF pins 1 & 2 and 3 & 4 closed CPU TYPE CONFIGURATION Type J12 J13 80486DX2 pins 1 & 2 and 3 & 4 pins 3 & 4 closed closed 80846DX pins 1 & 2 and 3 & 4 pins 3 & 4 closed closed 80487SX pins 1 & 2 and 3 & 4 pins 1 & 2 closed closed 80486SX pins 2 & 3 closed pins 2 & 3 closed