Search found 996 matches

by siggi
Fri May 20, 2022 9:34 am
Forum: Hardware
Topic: Logitek 8240.56.1 Expansion Board for ZX81?
Replies: 7
Views: 1643

Re: Logitek 8240.56.1 Expansion Board for ZX81?

Google found: "Full text of "c't (Magazin fuer Computertechnik) 12/1983"" https://archive.org/stream/ct8312/ct8312_djvu.txt Zubehör von Logitek Druckerinterface für ZX-Spectrum LPRINT, LUST, COPY läuft nun auch mit EPSON und Seikosha Druckern MX-80, GP-80 usw. Druck ohne Zeitverlust wie bei Druckerp...
by siggi
Tue May 17, 2022 7:00 pm
Forum: Hardware
Topic: If the R reg is used for video, how does it find time to refresh memory?
Replies: 3
Views: 1149

Re: If the R reg is used for video, how does it find time to refresh memory?

AFAIK Memotech (and Sinclair?) ram packs have their own refresh counter. And other ram packs often use static ram, which does not need refresh.
Futhermore any usual ram access also does a refresh of the accessed ram columns.
by siggi
Tue May 17, 2022 1:56 pm
Forum: Software
Topic: Pascal for ZX81
Replies: 71
Views: 21953

Re: Pascal for ZX81

There is a thread in the German Forum which gives possibilities to use partial Pascal without the need of using tape. It's for 48K RAM only, so not suitable for plain ZXPAND users. https://forum.tlienhard.com/phpBB3/viewtopic.php?t=4076 Meanwhile there is also a solution for "plain ZXPAND users" (3...
by siggi
Mon May 16, 2022 6:07 pm
Forum: Software
Topic: Pascal for ZX81
Replies: 71
Views: 21953

Re: Pascal for ZX81

If you have the manual as DOC (MS-Word) or Open Office file, I could do the changes in that document and send it back to you.

Or I could make screenshots of the errors and could add a description, what needs to be done.
by siggi
Mon May 16, 2022 10:04 am
Forum: Software
Topic: Pascal for ZX81
Replies: 71
Views: 21953

Re: Pascal for ZX81

jdfan1000 wrote: Sun Mar 21, 2021 3:51 am Ok, I believe I've finished cleaning it up and apply typographic magic.

This will also be on archive.org any minute now.
I found some misprints in the manual. And some functions and procedures are missing in chapter 5.13 (e. g. ram,usr,lsl,move,page).
Any chance, to update the manual?

Siggi
by siggi
Fri May 06, 2022 9:00 am
Forum: Sinclair Misc
Topic: Computacalc ZX
Replies: 7
Views: 2147

Re: Computacalc ZX

The program can be found there:
https://www.zx81stuff.org.uk/zx81/tape/ComputaCalc

Siggi
by siggi
Mon Mar 07, 2022 6:26 pm
Forum: Welcome Area
Topic: Hello from Sunny Wales
Replies: 5
Views: 2675

Re: Hello from Sunny Wales

A very mysterious first message.
All this could also apply to Putin's project "Ukraine".
by siggi
Mon Feb 21, 2022 2:05 pm
Forum: Software
Topic: PT3 Player for ZX81 with ZXPand+
Replies: 15
Views: 8924

Re: PT3 Player for ZX81 with ZXPand+

I have added a Mr.X soundboard to my ZxPand-system. Now I can also hear your great programs :D
IMG_8322_576x768.JPG
Thanks
Siggi
by siggi
Fri Jan 28, 2022 8:59 pm
Forum: Software
Topic: Lexicon of LIFE for ZX81 and ZXPand
Replies: 1
Views: 1503

Re: Lexicon of LIFE for ZX81 and ZXPand

Enjoying ;)

Thanks
Siggi
by siggi
Mon Jan 17, 2022 4:17 pm
Forum: Hardware
Topic: Where can I find a 5 pin din to twin Jack plug
Replies: 10
Views: 2003

Re: Where can I find a 5 pin din to twin Jack plug

Even if you have the DIN connector connected to a ZX81: the voltage levels at the DIN connector are much too low to be recognized by the ZX81 input circuit (DIN connectors use low levels and expect high impedance inputs, the ZX81 inputs are low impedance).

Siggi