Monday, June 1, 2015

min64 - The bare minimum rom cart for commodore 64

The idea was to design a cart that would fit entirely in the commodore without sticking out. Surprisingly, it could even be made small enough to fit a shell, if I make one in the future.

The board has has one ROM and thats it.

The board is a meer 1.05 inches deep and has notches for easy removal or mounting (granted a shell is designed). Measuring my own commodore, a board of 1.1875 inches would be flush with the chassis. Also has optional reset switch as suggested by catskull.

My main concern was supporting as many proms, eproms and eeproms as I could since too many are no longer made, but easy to find.

Those supported include:

28F010, 28F020, 28F040,
29F010, 29F020, 29F040,
49F010, 49F020, 49F040
2764, 27128, 27256, 27512
27c64, 27c128, 27c256, 27c512

As well as SF's, GL's, EE's, etc.

Also working on support for 2704, 2708, 2716, and 2732. These will fit, but would require a few rerouted pins.

In any case, I can't wait for these to arrive from OSHpark.

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