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 |
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 grounded |
J10 |
open | |
» |
Floppy drive interface precompensation is 125ns |
J12 |
open |
Floppy drive interface precompensation is 187ns |
J12 |
closed | |
» |
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 interrupt IRQ6 enabled |
J16 |
closed |
Floppy drive interface interrupt IRQ6 disabled |
J16 |
open | |
» |
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 enabled |
J19 |
closed |
Floppy disk change signal disabled |
J19 |
open | |
» |
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 IRQ14 enabled |
J24 |
closed |
IDE(AT) interface interrupt IRQ14 disabled |
J24 |
open | |
» |
Factory configured - do not alter |
S4/6 |
N/A |
VIDEO DISPLAY CONFIGURATION | |||||||
Primary |
Alternate |
J20 |
S4/1 |
S4/2 |
S4/3 |
S4/4 |
S4/5 |
MDA |
EGA w/CD 40x25 |
pins 1 & 2 |
on |
on |
on |
on |
off |
MDA |
EGA w/CD 80x25 |
pins 1 & 2 |
off |
on |
on |
on |
off |
MDA |
EGA w/ED 200 ln |
pins 1 & 2 |
on |
off |
on |
on |
off |
MDA |
EGA w/ED 350 ln |
pins 1 & 2 |
off |
off |
on |
on |
off |
CGA 40x25 |
EGA w/MD |
pins 2 & 3 |
on |
on |
off |
on |
off |
CGA 80x25 |
EGA w/MD |
pins 2 & 3 |
off |
on |
off |
on |
off |
EGA w/CD 40x25 |
MDA or none |
pins 1 & 2 |
on |
off |
off |
on |
off |
EGA w/CD 80X25 |
MDA or none |
pins 1 & 2 |
off |
off |
off |
on |
off |
EGA w/ED 200 ln |
MDA or none |
pins 1 & 2 |
on |
on |
on |
off |
off |
EGA w/ED 350ln |
MDA or none |
pins 1 & 2 |
off |
on |
on |
off |
off |
EGA w/MD |
CGA 40x25 or none |
pins 2 & 3 |
on |
off |
on |
off |
off |
EGA w/MD |
CGA 80x25 or none |
pins 2 & 3 |
off |
off |
on |
off |
off |
All VGA modes |
N/A |
N/A |
on |
N/A |
N/A |
N/A |
N/A |
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 pin 21 |
open |
closed |
IOCHRDY signal comes from pin 27 |
closed |
open |