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Extending this for a hn61256 32K ROM

Open hexbus opened this issue 10 months ago • 7 comments

Have you ever thought about creating a version of this for a HN61256 (or larger) 32K Mask ROM? You're just about there with this one, but many people want to use a 32K or 64K EPROM with the HN61256 as well. Almost every pin is the same on the bottom except Vcc on the top right, which is moved up.

Many of the mask ROMs used this same strange pinout for their 16K and 32K mask ROMs, and many vintage users have been struggling with making adapters for years. If you wanted to extend your adapter and trial it, I'd be more than happy to help.

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hexbus avatar Feb 04 '25 14:02 hexbus