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MicroFrame 386S

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