Interesting print out

Discussion about ZX80 / ZX81 Software
Lardo Boffin
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Interesting print out

Post by Lardo Boffin »

I bought a zeddy and found a printout in the manual.

What was interesting is that it looks like it does hi-res script from a purely BASIC program. Or at least I assume it is just the program and nothing else loaded. I don't have the time to type it in and test it!
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Is the DATA machine code for the hi-res driver?
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robsoft
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Re: Interesting print out

Post by robsoft »

It looks like it's altering the SYSVARS for the character set, 23606, 23607 - so my guess is that it's a FONT in the data statements, rather than any machine code.There doesn't seem to be anything that would call any machine code in the program either. :-)
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siggi
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Re: Interesting print out

Post by siggi »

Lardo Boffin wrote: Thu Jun 22, 2017 2:54 pm I bought a zeddy and found a printout in the manual.
Is the DATA machine code for the hi-res driver?
Maybe you bought a Zeddy, but the program is made for a Speccy (ZX81 BASIC does not have DATA, READ, RESTORE commands).

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Lardo Boffin
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Re: Interesting print out

Post by Lardo Boffin »

siggi wrote: Thu Jun 22, 2017 3:12 pm
Lardo Boffin wrote: Thu Jun 22, 2017 2:54 pm I bought a zeddy and found a printout in the manual.
Is the DATA machine code for the hi-res driver?
Maybe you bought a Zeddy, but the program is made for a Speccy (ZX81 BASIC does not have DATA, READ, RESTORE commands).

Siggi
That would explain it - I have never programmed in ZX81 BASIC so wouldn't have spotted that!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
Lardo Boffin
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Re: Interesting print out

Post by Lardo Boffin »

I may have to change the title to not very interesting...
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
gozzo
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Re: Interesting print out

Post by gozzo »

100% certain its for a spectrum , not only because of read data and restore statements, but the lower case letters and use of the poke to change character font !
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Re: Interesting print out

Post by gozzo »

and from the address used for the 'font file' , written for a 16k machine...
Lardo Boffin
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Re: Interesting print out

Post by Lardo Boffin »

There we go. Definitely not interesting then!

Although I don't mean that as abuse towards the Spectrum!
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
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1024MAK
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Re: Interesting print out

Post by 1024MAK »

Yeah, never mind the : used for multi-statement lines... which is not available on the ZX81, but is available on the ZX Spectrum ;)

Don't worry about it. Bits and pieces of different computer systems often get mixed together. I have a key top from a keyboard that I don't recognise that arrived with something...

Manuals for add-ons for who knows what, that never came with the computer that I got.

Even some Plus 4 joysticks (although they did just come with various other joysticks).

Mark
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1024MAK
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Re: Interesting print out

Post by 1024MAK »

By the way, if you wrote a suitable program, it was possible for the ZX81 to print lower case, or even your own UDG on the ZX81 / Alphacom 32 Printer / Timex Sinclair 2040 printer.

Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp

:!: Standby alert :!:
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb :!:
Looking forward to summer later in the year.
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