Commodore VIC20 8k/16k ROM PCB

Commodore VIC20 – 8k/16k ROM Cartridge PCB

This cartridge PCB provides 8x 8k or 4x 16k ROMs, each of which can be selected to be in block 1,2,3 or 5 (link selectable).

Supports 27C128/256/512, 28C256

If an EPROM larger than a 27C128 is used, multiple images can be selected using the ROM address jumpers

The default selection is the lower block in block 3, and the upper block in block 5, and uses the ROM image at the top of the ROM chip.

Fits classic Commodore & TFW8b.com VIC20 Cartridge Cases

If you need EPROMS you’ll find them here

Why not check out Tynemouth Software Blog on using this PCB

8K Mode jumpers

A15

A14

A13

27C64

28C64

27C128

27C256

28C256

27C512

0V

0V

0V

–

–

–

–

–

ROM 1

0V

0V

5V

–

–

–

–

–

ROM 2

0V

5V

0V

–

ROM 1

–

–

ROM 1

ROM 3

0V

5V

5V

–

ROM 1

–

–

ROM 2

ROM 4

5V

0V

0V

–

–

–

ROM 1

–

ROM 5

5V

0V

5V

–

–

–

ROM 2

–

ROM 6

5V

5V

0V

ROM 1

ROM 1

ROM 1

ROM 3

ROM 3

ROM 7

5V

5V

5V

ROM 1

ROM 1

ROM 2

ROM 4

ROM 4

ROM 8

16K Mode Jumpers

A15

A14

A13

27C128

27C256

28C256

27C512

0V

0V

16K

–

–

–

ROM 1

0V

5V

16K

–

–

ROM 1

ROM 2

5V

0V

16K

–

ROM 1

–

ROM 3

5V

5V

16K

ROM 1

ROM 2

ROM 2

ROM 4

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