MONOLITHIC SYSTEMS, INC. (COLORADO MSI) MICROFRAME 386S6 Processor 80386SX (exact location unidentified) Processor Speed 16/20MHz Chip Set C & T Video Chip Set None Maximum Onboard Memory 8MB Maximum Video Memory None Cache None BIOS AMI Dimensions 330mm x 215mm I/O Options Floppy drive interface, IDE interface, parallel port, PS/2 mouse interface, serial ports (2) NPU Options 80387SX (exact location unidentified) [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Ready LED J16 IDE interface LED J3 Serial port 1 J18 Front panel connector J6 Serial port 2 J20 PS/2 mouse interface J8 Speaker J22 Auxiliary keyboard J9 Reset switch J23 connector IDE interface J10 IDE access LED J24 Floppy drive J11 Power LED & keylock J40 interface Parallel port J15 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation J2 Open CMOS memory clear J2 Closed » Factory configured - do not alter J7 Open (oscillators enabled) Factory configured - do not alter J7 Closed (oscillators disabled) PS/2 mouse CLK enabled J12 Pins 2 & 3 closed PS/2 mouse CLK disabled J12 Pins 1 & 2 closed PS/2 mouse data enabled J13 Pins 1 & 2 closed PS/2 mouse data disabled J13 Pins 2 & 3 closed PS/2 mouse IRQ12 enabled J17 Closed PS/2 mouse IRQ12 disabled J17 Open » Pipeline mode enabled J19 Closed Pipeline mode disabled J19 Open » Monitor type select EGA/VGA J21 Pins 2 & 3 closed Monitor type select monochrome J21 Pins 1 & 2 closed » Factory configured - do not alter J25 Unidentified » Factory configured - do not alter J27 Closed (80387SX ready signal) » Factory configured - do not alter J53 Unidentified » IDE interface enabled S1/1 On IDE interface disabled S1/1 Off » IDE IOCHRDY signal from pin 21 S1/2 On (Seagate/CDC/Imprimis/Miniscribe) » IDE IOCHRDY signal from pin 27 (Quantum) S1/3 On » Factory configured - do not alter S1/4 Not used » Floppy drive interface enabled S1/5 On Floppy drive interface disabled S1/5 Off » Floppy drive change signal enabled S1/6 On Floppy drive change signal disabled S1/6 Off » Floppy drive speed select single speed S1/7 Off Floppy drive speed select two speed S1/7 On » Floppy drive pre-compensation value S1/8 Off select 125ns Floppy drive pre-compensation value S1/8 On select 187ns » Factory configured - do not alter S4/4 Not used Note: If using a Conner or Western Digital drive, ignore settings for S1/2 & S1/3. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (2) 256K x 9 None None None 1MB (2) 256K x 9 (2) 256K x 9 None None 2MB (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 (2) 256K x 9 2MB (2) 1M x 9 None None None 3MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 None 4MB (2) 1M x 9 (2) 1M x 9 None None 5MB (2) 256K x 9 (2) 256K x 9 (2) 1M x 9 (2) 1M x 9 6MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 None 8MB (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 (2) 1M x 9 DMA CHANNEL SELECTION Channel J26 » High Pins 1 & 2 closed Low Pins 2 & 3 closed PARALLEL PORT LPT/IRQ SELECTION LPT/IRQ S4/1 S4/2 S4/3 S4/5 S4/6 LPT1 LPT2 LPT3 IRQ5 IRQ7 Disabled Off Off Off Off Off » LPT1/IRQ7 On Off Off Off On LPT2/IRQ5 Off On Off On Off LPT/IRQ7 Off Off On Off On SERIAL PORT 1 COM/IRQ SELECTION COM/IRQ S3/1 S3/2 S3/3 S3/4 S3/5 S3/6 COM1 COM2 COM3 COM4 IRQ3 IRQ4 Disabled Off Off Off Off Off Off » 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 SERIAL PORT 2 COM/IRQ SELECTION COM/IRQ S2/1 S2/2 S2/3 S2/4 S2/5 S2/6 COM1 COM2 COM3 COM4 IRQ3 IRQ4 Disabled Off Off Off Off Off Off 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