...because we can't all be on the bleeding edge...





3100, MMPC MODEL 10/20

TANDY/RADIO SHACK

3100, MMPC MODEL 10/20

SENSATION! (250-1651)

Processor

80486SX/80487SX/ODP486/80486DX2

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

64MB

Maximum Video Memory

1MB

Cache

None

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

IDE interface

CN6

Parallel port

CN2

Floppy drive interface

CN7

Serial port 2

CN3

VGA feature connector

CN8

Serial port 1

CN4

Riser slot

SL1

PS/2 mouse port

CN5

IDE interface LED

W2

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Parallel port IRQ select IRQ7

W5

Pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

W5

Pins 2 & 3 closed

 

Parallel port IRQ disabled

W5

Open

Ľ

On board video enabled

W8

Pins 2 & 3 closed

 

On board video disabled

W8

Pins 1 & 2 closed

Ľ

VGA IRQ disabled

W9

Open

 

VGA IRQ enabled

W9

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 32

None

None

None

5MB

(1) 1M x 32

(1) 256K x 32

None

None

6MB

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

None

6MB

(1) 1M x 32

(1) 512K x 32

None

None

7MB

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

7MB

(1) 1M x 32

(1) 512K x 32

(1) 256K x 32

None

8MB

(1) 1M x 32

(1) 512K x 32

(1) 256K x 32

(1) 256K x 32

8MB

(1) 1M x 32

None

(1) 512K x 32

(1) 512K x 32

8MB

(1) 1M x 32

(1) 1M x 32

None

None

8MB

(1) 2M x 32

None

None

None

9MB

(1) 1M x 32

(1) 256K x 32

(1) 512K x 32

(1) 512K x 32

9MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

None

9MB

(1) 2M x 32

(1) 256K x 32

None

None

10MB

(1) 1M x 32

(1) 512K x 32

(1) 512K x 32

(1) 512K x 32

10MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

10MB

(1) 1M x 32

(1) 1M x 32

(1) 512K x 32

None

10MB

(1) 2M x 32

None

(1) 256K x 32

(1) 256K x 32

10MB

(1) 2M x 32

(1) 512K x 32

None

None

11MB

(1) 1M x 32

(1) 1M x 32

(1) 512K x 32

(1) 256K x 32

11MB

(1) 2M x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

11MB

(1) 2M x 32

(1) 512K x 32

(1) 256K x 32

None

12MB

(1) 1M x 32

(1) 1M x 32

(1) 512K x 32

(1) 512K x 32

12MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

None

12MB

(1) 2M x 32

(1) 512K x 32

(1) 256K x 32

(1) 256K x 32

12MB

(1) 2M x 32

None

(1) 512K x 32

(1) 512K x 32

12MB

(1) 2M x 32

(1) 1M x 32

None

None

13MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

13MB

(1) 2M x 32

(1) 256K x 32

(1) 512K x 32

(1) 512K x 32

13MB

(1) 2M x 32

(1) 1M x 32

(1) 256K x 32

None

14MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 512K x 32

14MB

(1) 2M x 32

(1) 512K x 32

(1) 512K x 32

(1) 512K x 32

14MB

(1) 2M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

14MB

(1) 2M x 32

(1) 1M x 32

(1) 512K x 32

None

15MB

(1) 2M x 32

(1) 1M x 32

(1) 512K x 32

(1) 256K x 32

16MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

16MB

(1) 2M x 32

(1) 1M x 32

(1) 512K x 32

(1) 512K x 32

16MB

(1) 2M x 32

None

(1) 1M x 32

(1) 1M x 32

16MB

(1) 2M x 32

(1) 2M x 32

None

None

16MB

(1) 4M x 32

None

None

None

17MB

(1) 2M x 32

(1) 256K x 32

(1) 1M x 32

(1) 1M x 32

17MB

(1) 2M x 32

(1) 2M x 32

(1) 256K x 32

None

17MB

(1) 4M x 32

(1) 256K x 32

None

None

18MB

(1) 2M x 32

(1) 512K x 32

(1) 1M x 32

(1) 1M x 32

18MB

(1) 2M x 32

(1) 2M x 32

(1) 256K x 32

(1) 256K x 32

18MB

(1) 2M x 32

(1) 2M x 32

(1) 512K x 32

None

18MB

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

None

18MB

(1) 4M x 32

(1) 512K x 32

None

None

19MB

(1) 2M x 32

(1) 2M x 32

(1) 512K x 32

(1) 256K x 32

19MB

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

19MB

(1) 4M x 32

(1) 512K x 32

(1) 256K x 32

None

20MB

(1) 2M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

20MB

(1) 2M x 32

(1) 2M x 32

(1) 512K x 32

(1) 512K x 32

20MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

None

20MB

(1) 4M x 32

(1) 512K x 32

(1) 256K x 32

(1) 256K x 32

20MB

(1) 4M x 32

None

(1) 512K x 32

(1) 512K x 32

20MB

(1) 4M x 32

(1) 1M x 32

None

None

21MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

(1) 256K x 32

21MB

(1) 4M x 32

(1) 256K x 32

(1) 512K x 32

(1) 512K x 32

21MB

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

None

22MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

(1) 512K x 32

22MB

(1) 4M x 32

(1) 512K x 32

(1) 512K x 32

(1) 512K x 32

22MB

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

22MB

(1) 4M x 32

(1) 1M x 32

(1) 512K x 32

None

23MB

(1) 4M x 32

(1) 1M x 32

(1) 512K x 32

(1) 256K x 32

24MB

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

(1) 1M x 32

24MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

None

24MB

(1) 4M x 32

(1) 1M x 32

(1) 512K x 32

(1) 512K x 32

24MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

None

24MB

(1) 4M x 32

(1) 2M x 32

None

None

25MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

(1) 256K x 32

25MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

25MB

(1) 4M x 32

(1) 2M x 32

(1) 256K x 32

None

26MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

(1) 512K x 32

26MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

(1) 512K x 32

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

26MB

(1) 4M x 32

(1) 2M x 32

(1) 256K x 32

(1) 256K x 32

26MB

(1) 4M x 32

(1) 2M x 32

(1) 512K x 32

None

27MB

(1) 4M x 32

(1) 2M x 32

(1) 512K x 32

(1) 256K x 32

28MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

(1) 1M x 32

28MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

28MB

(1) 4M x 32

(1) 2M x 32

(1) 512K x 32

(1) 512K x 32

28MB

(1) 4M x 32

(1) 2M x 32

(1) 1M x 32

None

29MB

(1) 4M x 32

(1) 2M x 32

(1) 1M x 32

(1) 256K x 32

30MB

(1) 4M x 32

(1) 2M x 32

(1) 1M x 32

(1) 512K x 32

32MB

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

32MB

(1) 4M x 32

(1) 2M x 32

(1) 1M x 32

(1) 1M x 32

32MB

(1) 4M x 32

None

(1) 2M x 32

(1) 2M x 32

32MB

(1) 4M x 32

(1) 4M x 32

None

None

33MB

(1) 4M x 32

(1) 256K x 32

(1) 2M x 32

(1) 2M x 32

33MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

None

34MB

(1) 4M x 32

(1) 512K x 32

(1) 2M x 32

(1) 2M x 32

34MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

34MB

(1) 4M x 32

(1) 4M x 32

(1) 512K x 32

None

35MB

(1) 4M x 32

(1) 4M x 32

(1) 512K x 32

(1) 256K x 32

36MB

(1) 4M x 32

(1) 1M x 32

(1) 2M x 32

(1) 2M x 32

36MB

(1) 4M x 32

(1) 4M x 32

(1) 512K x 32

(1) 512K x 32

36MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

None

37MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

38MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 512K x 32

40MB

(1) 4M x 32

(1) 2M x 32

(1) 2M x 32

(1) 2M x 32

40MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

40MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

None

41MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

(1) 256K x 32

42MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

(1) 512K x 32

44MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

(1) 1M x 32

48MB

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

(1) 2M x 32

48MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

None

49MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

50MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 512K x 32

52MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

56MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 2M x 32

64MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

512KB

None

1MB

512KB

512KB

Note: The size of the video memory chips are unidentified.

CPU SPEED SELECTION

Speed

W1

25MHz

Closed

33MHz

Open

50iMHz

Closed

66iMHz

Open

CPU TYPE SELECTION

Type

W6

W7

80486SX

Pins 2 & 3 closed

Pins 1 & 2 closed

80487SX

Pins 1 & 2 closed

Pins 2 & 3 closed

ODP486

Pins 1 & 2 closed

Pins 1 & 2 closed

80486DX

Pins 1 & 2 closed

Pins 1 & 2 closed

80486DX2

Pins 1 & 2 closed

Pins 1 & 2 closed

Note: W7 may not be present on all boards.

SERIAL PORT 1 ADDRESS SELECTION

Setting

IRQ

W3

Ľ

COM1/COM3

IRQ4

Pins 1 & 2 closed

 

COM3

IRQ11

Pins 2 & 3 closed

SERIAL PORT 2 ADDRESS SELECTION

Setting

IRQ

W4

Ľ

COM2/COM4 (2F8h)

IRQ3

Pins 1 & 2 closed

 

COM4

IRQ10

Pins 2 & 3 closed