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MICROPAQ 452

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