Megabit 128 Clone Board - Final Revision

Dec 5, 2021 7:07 PM

dabone

Views

1989

Likes

7

Dislikes

3

I've cloned the Megabit 128 rom adapter for the Commodore 128. I replaced all the resistors, capacitors, and the 74HC174 with surface mount, but the transistor needed to stay a 3904. (For speed)

Rear shot. Reset circuit is left blank, because some of the roms on the default image require you to reset the machine without changing banks on the Megabit.

retrocomputing

c128

commodore

Does it plug into a normal comadore?

4 years ago | Likes 1 Dislikes 0

Fits in Socket U36 of a Commodore 128.

4 years ago | Likes 1 Dislikes 0