Setting up an eprom with coral basic interpreter

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
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xubuntu
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Joined: Sat Jun 18, 2022 12:42 pm
Location: Athens, GR

Re: Setting up an eprom with coral basic interpreter

Post by xubuntu »

I just tried few experiments WITHOUT rem and it works, always.

This justifies my theory.

REM is not needed because we ALWAYS return to a safe memory location, since we were in basic prompt.
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xubuntu
Posts: 49
Joined: Sat Jun 18, 2022 12:42 pm
Location: Athens, GR

Re: Setting up an eprom with coral basic interpreter

Post by xubuntu »

Paul I am in the extremely happy position to announce you that YOUR ROM WORKED!

I successfully connected line A13 from the eprom to the bus and your rom WORKED like a charm!

That is like a dream! FIREWORKS :lol:

The VLA81 came yesterday.

I honestly didn't expect your rom or my direct connection of A13 to the cpu to work.

Would you be kind enough to add those 5 instructions somewhere in your rom so I get a black background each time I initialize my homebrew zx81 compatible super computer?

3E 03 D3 E7 C9
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