Interesting print out

Discussion about ZX80 / ZX81 Software
Lardo Boffin
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Joined: Sat Nov 26, 2016 1:42 am

Interesting print out

Post by Lardo Boffin » Thu Jun 22, 2017 1:54 pm

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!
IMG_6185.JPG
IMG_6185.JPG (2.53 MiB) Viewed 269 times
IMG_6186.JPG
IMG_6186.JPG (2.69 MiB) Viewed 269 times
IMG_6187.JPG
IMG_6187.JPG (2.25 MiB) Viewed 269 times
Is the DATA machine code for the hi-res driver?
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

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robsoft
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Location: Chester, UK
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Re: Interesting print out

Post by robsoft » Thu Jun 22, 2017 2:05 pm

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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Location: Dauernheim, Germany
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Re: Interesting print out

Post by siggi » Thu Jun 22, 2017 2:12 pm

Lardo Boffin wrote:
Thu Jun 22, 2017 1:54 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
My ZX81 web-server: online since 2007
http://zx81-siggi.endoftheinternet.org/index.html

Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: Interesting print out

Post by Lardo Boffin » Thu Jun 22, 2017 2:16 pm

siggi wrote:
Thu Jun 22, 2017 2:12 pm
Lardo Boffin wrote:
Thu Jun 22, 2017 1:54 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!
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

Lardo Boffin
Posts: 661
Joined: Sat Nov 26, 2016 1:42 am

Re: Interesting print out

Post by Lardo Boffin » Thu Jun 22, 2017 2:20 pm

I may have to change the title to not very interesting...
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

gozzo
Posts: 444
Joined: Fri Jul 08, 2011 7:52 pm

Re: Interesting print out

Post by gozzo » Thu Jun 22, 2017 2:56 pm

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 !

gozzo
Posts: 444
Joined: Fri Jul 08, 2011 7:52 pm

Re: Interesting print out

Post by gozzo » Thu Jun 22, 2017 2:58 pm

and from the address used for the 'font file' , written for a 16k machine...

Lardo Boffin
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Joined: Sat Nov 26, 2016 1:42 am

Re: Interesting print out

Post by Lardo Boffin » Thu Jun 22, 2017 3:10 pm

There we go. Definitely not interesting then!

Although I don't mean that as abuse towards the Spectrum!
ZX81 iss 1 (bugged ROM, kludge fix, normal, kit)
Iss 3 with ZXVid, another in nearly perfect box
TS 1000 iss 3, ZXPand AY, ZX8-CCB & ZX-KDLX
TS 1500
TS 2000
Spectrum 16k (iss 1 s/n 1499)
Spectrum 48k
Toastrack + DIVMMC future

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1024MAK
Posts: 1803
Joined: Mon Sep 26, 2011 9:56 am
Location: Looking forward to summer in Somerset, UK...

Re: Interesting print out

Post by 1024MAK » Thu Jun 22, 2017 3:24 pm

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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Joined: Mon Sep 26, 2011 9:56 am
Location: Looking forward to summer in Somerset, UK...

Re: Interesting print out

Post by 1024MAK » Thu Jun 22, 2017 3:35 pm

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

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