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Apparat 256K Memory Board (Rev. B)

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Jumper Settings

Card Type

Memory

Maximum Onboard Memory

256KB DRAM

I/O Options

N/A

Data Bus

8-bit ISA

52857-1.png

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Parity enabled

SW1/8

Off

Parity disabled

SW1/8

On

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

64KB

(9) 64K x 1

None

None

None

128KB

(9) 64K x 1

(9) 64K x 1

None

None

192KB

(9) 64K x 1

(9) 64K x 1

(9) 64K x 1

None

256KB

(9) 64K x 1

(9) 64K x 1

(9) 64K x 1

(9) 64K x 1

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/7

64KB

Off

Off

Off

128KB

On

On

Off

192KB

On

On

Off

256KB

On

On

On

STARTING MEMORY ADDRESS SELECTION

Setting

SW1/3

SW1/4

SW1/5

SW1/6

0KB

Off

Off

Off

Off

64KB

On

Off

Off

Off

128KB

Off

On

Off

Off

192KB

On

On

Off

Off

256KB

Off

Off

On

Off

320KB

On

Off

On

Off

384KB

Off

On

On

Off

448KB

On

On

On

Off

512KB

Off

Off

Off

On

576KB

On

Off

Off

On

640KB

Off

On

Off

On

704KB

On

On

Off

On

768KB

Off

Off

On

On

832KB

On

Off

On

On

896KB

Off

On

On

On

960KB

On

On

On

On

See Also