Memotech Memopack HRG for the ZX81

ZX80, ZX 81, ZX Spectrum, TS2068 and other clones
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stefano
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Joined: Mon Jul 16, 2007 7:39 pm

Memotech Memopack HRG for the ZX81

Post by stefano »

Hey,
yes, we have yet another base graphics lib !
I tested it with the EightyOne emulator only; I believe that it will be *at least partially* working on the real hardware too, but I'm desperatly looking for Memotech HRG owners for testing purposes.

Please get in touch -

Stefano
stefano
Well known member
Posts: 2137
Joined: Mon Jul 16, 2007 7:39 pm

Post by stefano »

This post is just to tell I got a feedback.
The library runs correctly on the emulator but fails showing any sort of output on the real hardware !
I'll try to understand what's wrong.
stefano
Well known member
Posts: 2137
Joined: Mon Jul 16, 2007 7:39 pm

Post by stefano »

We have a workaround !
Code has to avoid to touch the eight leftmost bits, reducing the resolution to 248 dots (as it was in the original specifications).
We could see Death Star run fine and smoothly !
stefano
Well known member
Posts: 2137
Joined: Mon Jul 16, 2007 7:39 pm

Post by stefano »

Yup, put a picture online of the result, the leftmost 8 bits are still to be protected:

http://www.z88dk.org/wiki/doku.php?id=l ... _functions
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