Description
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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