Pixel Plotting in ZX80 Basic

Any discussions related to the creation of new hardware or software for the ZX80 or ZX81
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TheSnial
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Joined: Sun Apr 14, 2019 10:42 pm

Pixel Plotting in ZX80 Basic

Post by TheSnial » Mon Apr 15, 2019 10:23 am

For fun I wanted to reproduce the Jupiter Ace sine wave program on a ZX80 in BASIC. ZX80 Basic of course doesn't provide PLOT or UNPLOT, the display is inconveniently after the workspace and variables (so you can't just cache the start address) and the block graphics character codes are in a wacky order, but eventually I managed it :-)

Image

Image

A longer blog about this epic struggle can be found here.

.z80 files attached.
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ZX80Plottastic.zip
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Lardo Boffin
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Joined: Sat Nov 26, 2016 2:42 am

Re: Pixel Plotting in ZX80 Basic

Post by Lardo Boffin » Thu Apr 25, 2019 10:55 pm

Interesting program and blog! Clearly a lot of patience was required.
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mrtinb
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Re: Pixel Plotting in ZX80 Basic

Post by mrtinb » Fri Apr 26, 2019 12:39 pm

Let me say it short: I'm impressed.
Martin
ZX81, Lambda 8300, Commodore 64, Mac G4 Cube

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