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





3000 NL

TANDY/RADIO SHACK

3000 NL

Processor

80286

Processor Speed

10MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

8MB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

431mm x 400mm

I/O Options

External memory card

NPU Options

80287

CONNECTIONS

Purpose

Location

External memory card

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Monitor type select monochrome

J3

Pins 1 & 2 closed

 

Monitor type select color

J3

Pins 2 & 3 closed

»

Floppy drive address select primary

S1/5

On

 

Floppy drive address select secondary

S1/5

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(2) 256K x 9

None

None

None

640KB

(2) 256K x 9

(2) 64K x 9

None

None

1MB

None

None

None

None

1.64MB

None

(2) 64K x 9

None

None

2MB

None

None

None

None

4.64MB

None

(2) 64K x 9

None

None

5MB

None

None

None

None

8MB

None

None

None

None

Note: The location of banks 2 & 3 are unidentified.

DRAM CONFIGURATION (CON’T)

Size

Bank 0A

Bank 1A

Bank 2A

Bank 3A

512KB

None

None

None

None

640KB

None

None

None

None

1MB

(2) 256K x 9

(2) 256K x 9

None

None

1.64MB

(2) 256K x 9

None

(2) 256K x 9

(2) 256K x 9

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

4.64MB

(2) 256K x 9

None

(2) 1M x 9

(2) 1M x 9

5MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

(2) 1M x 9

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

Note: Banks 0A, 1A, 2A, & 3A are located on the external memory card.

DRAM JUMPER CONFIGURATION

Size

J7

512KB

Pins 2 & 3, 4 & 5 closed

640KB

Pins 2 & 3, 4 & 5 closed

1MB

Pins 1 & 2, 5 & 6 closed

1.64MB

Pins 2 & 3, 5 & 6 closed

2MB

Pins 1 & 2, 5 & 6 closed

4.64MB

Pins 2 & 3, 5 & 6 closed

5MB

Pins 1 & 2, 5 & 6 closed

8MB

Pins 1 & 2, 5 & 6 closed

Note: Banks 0A, 1A, 2A, & 3A are located on the external memory card.

NPU SPEED SELECTION

Speed

J4

J8

8MHz

Pins 1 & 2 closed

Pins 1 & 3 closed

10MHz

Pins 2 & 3 closed

Pins 3 & 4 closed

BIOS SELECTION

Type

J5

J6

»

27128

Pins 1 & 2 closed

Pins 2 & 3 closed

 

27256

Pins 1 & 2 closed

Pins 1 & 2 closed

 

27512

Pins 2 & 3 closed

Pins 1 & 2 closed

PARALLEL PORT IRQ SELECTION

IRQ

J1

S1/1

S1/2

»

IRQ7

Pins 2 & 3 closed

On

On

 

IRQ5

Pins 1 & 2 closed

On

Off

 

Disabled

N/A

Off

N/A

SERIAL PORT IRQ SELECTION

IRQ

J2

S1/3

S1/4

»

IRQ4

Pins 1 & 2 closed

On

On

 

IRQ3

Pins 2 & 3 closed

On

Off

 

Disabled

N/A

Off

N/A