acorn atom and acorn system series • Re: Acorn atom flashing lines on screen is this normal

Hello t.d.69

There are also some software solutions, in one of the Atom toolboxes (the GAGS ROM v2.3) there is a statement "NOSNOW" and also "SNOW", see a.o. Atom Nieuws 1984 number 6 page 28 et seq.:https://www.acornatom.nl/atom_nieuws/19 ... 846028.htm
and in Atom Nieuws 1986 number 5 page 11 there is a short assembler program "NORUIS", see: https://www.acornatom.nl/atom_nieuws/19 ... 865011.htm

Info derived from: https://www.acornatom.nl/index_t.html
And there may be more . . .

Maybe some other forum member can get you an image of GAGS (4k rom) or even a disassembler/source code file.

More articles (in alphabetical order) about Atom hard- and software may be found on the above mentioned site, see page:https://www.acornatom.nl/atom_nieuws/titel-an.html

Atom Nieuws was a Dutch magazine dedicated to the Acorn Atom, most of its issues can be downloaded from the Internet Archive at: https://archive.org/search?query=Atom+News
If the language is a problem I am sure someone can help you out if you post your questions on this site.

P.S.: Cause of the "Snow" is the µP (6502) writing to the video memory at the same time as the VDU (6847) is reading from it.

Statistics: Posted by Louis.m — Sat Feb 22, 2025 12:31 am

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