MONOLITHIC SYSTEMS, INC. (COLORADO MSI) MICROPAQ 452 Data bus: 16-bit ISA Size: Full-length, Full-height card Hard drive supported: 2 IDE(AT) interface drives Floppy drives supported: 360KB, 720KB, 1.2MB, 1.44MB [Image] CONNECTIONS Function Location 40-pin IDE(AT) interface connector J1 34-pin control cable connector - floppy drive J2 25-pin parallel port - internal J3 9-pin serial port 1 - internal J4 9-pin serial port 2 - internal J5 4-pin connector - drive active LED J6 VGA feature connector J7 EGA feature connector J11 15-pin analog video port J13 15-pin digital video port J21 USER CONFIGURABLE SETTINGS Function Location Setting » IDE(AT) interface pin 34 grounded J10 closed IDE(AT) interface pin 34 not J10 open grounded » Floppy drive interface J12 open precompensation is 125ns Floppy drive interface J12 closed precompensation is 187ns » IDE(AT) interface enabled J14 open IDE(AT) interface disabled J14 closed » On-board video adapter enabled J15 closed On-board video adapter disabled J15 open USER CONFIGURABLE SETTINGS(CONTINUED) Function Location Setting » Floppy drive interface J16 closed interrupt IRQ6 enabled Floppy drive interface J16 open interrupt IRQ6 disabled » Single speed floppy drive J17 open Dual speed floppy drive J17 closed » 16-bit mode enabled J18 open 8-bit mode enabled J18 closed » Floppy disk change signal J19 closed enabled Floppy disk change signal J19 open disabled » Monitor type select color J20 pins 1 & 2 closed Monitor type select monochrome J20 pins 2 & 3 closed » VGA clock enabled J22 pins 1 & 2 closed Feature clock enabled J22 pins 2 & 3 closed » Floppy drive interface enabled J23 closed Floppy drive interface disabled J23 open » IDE(AT) interface interrupt J24 closed IRQ14 enabled IDE(AT) interface interrupt J24 open IRQ14 disabled » Factory configured - do not S4/6 N/A alter VIDEO DISPLAY CONFIGURATION Primary Alternate J20 S4/1 S4/2 S4/3 S4/4 S4/5 MDA EGA w/CD pins on on on on off 40x25 1 & 2 MDA EGA w/CD pins off on on on off 80x25 1 & 2 MDA EGA w/ED pins on off on on off 200 ln 1 & 2 MDA EGA w/ED pins off off on on off 350 ln 1 & 2 CGA 40x25 EGA w/MD pins on on off on off 2 & 3 CGA 80x25 EGA w/MD pins off on off on off 2 & 3 EGA w/CD MDA or none pins on off off on off 40x25 1 & 2 EGA w/CD MDA or none pins off off off on off 80X25 1 & 2 EGA w/ED MDA or none pins on on on off off 200 ln 1 & 2 EGA w/ED MDA or none pins off on on off off 350ln 1 & 2 EGA w/MD CGA 40x25 pins on off on off off or none 2 & 3 EGA w/MD CGA 80x25 pins off off on off off or none 2 & 3 All VGA N/A N/A on N/A N/A N/A N/A modes Note: All pins designated should be placed in the closed position. PARALLEL PORT CONFIGURATION LPT IRQ S2/1 S2/2 S2/3 S2/4 S2/5 S2/6 » 1 IRQ7 on off off N/A off on 2 IRQ5 off on off N/A on off 3 IRQ7 off off on N/A off on Disabled N/A off off off N/A off off PRIMARY SERIAL PORT CONFIGURATION Port 1 (J4) IRQ S1/1 S1/2 S1/3 S1/4 S1/5 S1/6 » COM1 IRQ4 on off off off off on COM2 IRQ3 off on off off on off COM3 IRQ4 off off on off off on COM4 IRQ3 off off off on on off Disabled N/A off off off off off off ALTERNATE SERIAL PORT CONFIGURATION Port 2 (J5) IRQ S3/1 S3/2 S3/3 S3/4 S3/5 S3/6 » COM2 IRQ3 off on off off on off COM1 IRQ4 on off off off off on COM3 IRQ4 off off on off off on COM4 IRQ3 off off off on on off Disabled N/A off off off off off off IOCHRDY Setting J8 J9 » IOCHRDY signal comes from open closed pin 21 IOCHRDY signal comes from closed open pin 27