MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
MicroFrame 386S
|
Processor |
80386SX |
|
Processor speed |
16/20MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI/Quadtel |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Parallel port, serial ports (2), floppy drive interface, IDE interface, bus mouse port |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Auxiliary Keyboard |
J8 |
|
CMOS Reset switch |
J2 |
IDE interface |
J9 |
|
Floppy drive LED |
J3 |
Floppy drive interface |
J11 |
|
No connection (key) |
J6 pin 1 |
CPU ready LED |
J12 |
|
-Ready |
J6 pin 2 |
Reset switch |
J13 |
|
-Keyboard disabled |
J6 pin 3 |
Parallel port |
J14 |
|
No connection |
J6 pin 4 |
Serial port (COM1) |
J19 |
|
No connection |
J6 pin 5 |
Serial port (COM2) |
J20 |
|
-Disk |
J6 pin 6 |
Digital video |
J22 |
|
-Reset |
J6 pin 7 |
Analog video |
J23 |
|
-GND |
J6 pin 8 |
Speaker |
J24 |
|
-Speaker |
J6 pin 9 |
IDE interface LED |
J28 |
|
+5VDC |
J6 pin 10 |
Power LED & keylock |
J52 |
|
Bus mouse port |
J7 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
IDE Interface - pin 34 is not grounded |
J15 |
Open |
|
IDE Interface - pin 34 is grounded |
J15 |
Closed | |
| » |
Factory configured - do not alter |
J16 |
pins 1 & 2 closed |
| » |
Parallel port (J14) select LPT1/IRQ7 |
J21 |
Closed |
|
Parallel port (J14) disabled |
J21 |
Open | |
| » |
Serial port (J19) select COM1/IRQ4 |
J25 |
Closed |
|
Serial port (J19) disabled |
J25 |
Open | |
| » |
DMA signal select default-high |
J26 |
pins 1 & 2 closed |
|
DMA signal select default-low |
J26 |
pins 2 & 3 closed | |
| » |
Serial port (J20) select COM2/IRQ3 |
J30 |
Closed |
|
Serial port (J20) disabled |
J30 |
Open | |
| » |
Floppy precompensation select 125ns |
J31 |
Open |
|
Floppy precompensation select 187ns |
J31 |
Closed | |
| » |
Floppy drive speed select single speed |
J32 |
Open |
|
Floppy drive speed select dual speed |
J32 |
Closed | |
| » |
Floppy disk change signal enabled |
J33 |
Closed |
|
Floppy disk change signal disabled |
J33 |
Open | |
| » |
On-board video port enabled |
J34 |
Closed |
|
On-board video port disabled |
J34 |
Open | |
| » |
Pipeline mode enabled |
J35 |
Closed |
|
Pipeline mode disabled |
J35 |
Open | |
| » |
Factory configured - do not alter |
J36 |
Open |
| » |
Factory configured - do not alter |
J37 |
pins 1 & 2 closed |
| » |
On-board video mode select 16-bit |
J38 |
Open |
|
On-board video mode select 8-bit |
J38 |
Closed | |
| » |
NPU disabled |
J39 |
Open |
|
NPU enabled |
J39 |
Closed | |
|
USER CONFIGURABLE SETTINGS (CON’T) | |||
|
Function |
Jumper |
Position | |
| » |
Factory configured - do not alter |
J42 |
pins 1 & 2 closed |
| » |
Bus mouse port (J7) interface select IRQ12 |
J45 |
Closed |
|
Bus mouse port (J7) interface select none |
J45 |
Open | |
|
Keyboard controller type select without mouse support |
J48 |
pins 1 & 2 closed | |
|
Keyboard controller type select with mouse support |
J48 |
pins 2 & 3 closed | |
| » |
Monitor type select color |
J51 |
pins 2 & 3 closed |
|
Monitor type select monochrome |
J51 |
pins 1 & 2 closed | |
| » |
Factory configured - do not alter |
J53 |
Open |
| » |
IRQ5 enabled (Rev. B and later) |
J54 |
Closed |
|
IRQ5 disabled (Rev. B and later) |
J54 |
Open | |
| » |
On-board mouse support enabled (Rev. B and later) |
J55 |
pins 1 & 2 closed |
|
On-board mouse support disabled (Rev. B and later) |
J55 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
VIDEO DISPLAY MODE JUMPERS | |||||||
|
BIOS Primary |
BIOS Secondary |
JP27 pins | |||||
|
Adapter |
Adapter |
1 & 2 |
3 & 4 |
5 & 6 |
7 & 8 |
9 & 10 |
JP29 |
|
MDA |
*EGA w/CD 40x25 |
Closed |
Closed |
Closed |
Closed |
Open |
1 & 2 |
|
MDA |
*EGA w/CD 80x25 |
Open |
Closed |
Closed |
Closed |
Open |
1 & 2 |
|
MDA |
*EGA w/ED 200 line |
Closed |
Open |
Closed |
Closed |
Open |
1 & 2 |
|
MDA |
*EGA w/ED 350 line |
Open |
Open |
Closed |
Closed |
Open |
1 & 2 |
|
CGA 40x25 |
*EGA w/MD |
Closed |
Closed |
Open |
Closed |
Open |
2 & 3 |
|
CGA 80x25 |
*EGA w/MD |
Open |
Closed |
Open |
Closed |
Open |
2 & 3 |
|
*EGA w/CD 40x25 |
MDA or none |
Closed |
Open |
Open |
Closed |
Open |
1 & 2 |
|
*EGA w/CD 80x25 |
MDA or none |
Open |
Open |
Open |
Closed |
Open |
1 & 2 |
|
*EGA w/ED200 line |
MDA or none |
Closed |
Closed |
Closed |
Open |
Open |
1 & 2 |
|
*EGA w/ED350 line |
MDA or none |
Open |
Closed |
Closed |
Open |
Open |
1 & 2 |
|
*EGA w/MD |
CGA 40x25 or none |
Closed |
Open |
Closed |
Open |
Open |
2 & 3 |
|
*EGA w/MD |
CGA 80x25 or none |
Open |
Open |
Closed |
Open |
Open |
2 & 3 |
|
All VGA Modes |
N/A |
N/A |
N/A |
N/A |
N/A |
Closed |
N/A |
|
Note:Settings marked with an asterisk (*) indicate configuration of the onboard video adapter, other configurations require an optional video card. Pins designated should be in the closed position. CD = Color Display (CGA) ED = Enhanced color display (EGA) MD = Monochrome Display | |||||||
|
IOCHRDY SIGNAL CONFIGURATION | ||
|
Drive |
J17 |
J18 |
|
Pin 21 CDC/Imprimis/Miniscribe/Maxtor/Seagate |
Closed |
Open |
|
pin 27 Quantum |
Open |
Closed |