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3000HD (DISCRETE VERSION) Motherboard Settings and Configuration






TANDY/RADIO SHACK

3000HD (DISCRETE VERSION)

Processor

80286

Processor Speed

8MHz

Chip Set

C & T

Video Chip Set

None

Maximum Onboard Memory

640KB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

462mm x 458mm

I/O Options

None

NPU Options

80287

USER CONFIGURABLE SETTINGS

Function

Label

Position

Monitor type select monochrome

J1

Pins 1 & 2 closed

 

Monitor type select color

J1

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(18) 41256

None

640KB

(18) 41256

(18) 4164

Note: The location of banks 0 & 1 are unidentified.

DRAM JUMPER CONFIGURATION

Size

J2

512KB

Open

640KB

Closed

BIOS SELECTION

Type

J3

J4

J5

J6

27128

Closed

Closed

Open

Open

27256 (not used)

Open

Open

Closed

Closed








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