Search found 58 matches

by Gunstick
Sun Oct 04, 2020 12:23 am
Forum: ST
Topic: C070243 Rev C (520ST+, 1MB, quite botched with extensions)
Replies: 4
Views: 4379

Re: C070243 Rev C (520ST+, 1MB, quite botched with extensions)

A new "ST-Computer magazin" archive has appeared, and this time the RAM expansion from 2.5MB to 3MB is scanned in
Check page 150 (pdf page 154) of magazine 1990-03
https://www.kultmags.com/mags.php?folde ... IvMTk5MA==
And don't forget the errata from magazine 1990-04 (page 10)
by Gunstick
Tue Jun 09, 2020 5:41 pm
Forum: HARDWARE ISSUES
Topic: Atari 1040STF - C103088 rev.2A - jagged image in low resolution
Replies: 9
Views: 1072

Re: Atari 1040STF - C103088 rev.2A - jagged image in low resolution

if the ram would be damaged, the games would not work. So for me this is not a RAM issue. Rather a timing issue that the shifter gets too much desynchronized from the mmu or glue. Does the problem persist if you do a reset? If so, run a demo with overscan effects. Does that correct the issue? Now fo...
by Gunstick
Tue May 19, 2020 1:09 am
Forum: SOFTWARE
Topic: Convert image from PNG to PI2 ?
Replies: 9
Views: 1472

Re: Convert image from PNG to PI2 ?

ARGH! Anyone know how to convert PI3 into IMG ?! EDIT: looks like CANVAS can do it ... https://www.exxoshost.co.uk/forum/viewtopic.php?f=25&t=65 If you are on linux, netpbm has pi3topbm $ pi3topbm < BILD.PI3 | pnmtopng > BILD.PNG $ file BILD.PNG BILD.PNG: PNG image data, 640 x 400, 1-bit grayscale,...
by Gunstick
Tue May 19, 2020 12:57 am
Forum: SOFTWARE
Topic: Modified TOS to remove resolutions limitation
Replies: 50
Views: 12002

Re: Modified TOS to remove resolutions limitation

Hi so this TOS modification would make the UBE adapter work flawlessly by software-switching all 3 resolutions. There was already some work done to run a color program from a mono workstation, if the color program didn't use GEM (because bitplane shifting etc). So the UBE switch should be fine, cari...
by Gunstick
Sat Dec 28, 2019 12:02 am
Forum: CHAT FORUM
Topic: Acorn A3010 anyone have one here ?
Replies: 26
Views: 3669

Re: Acorn A3010 anyone have one here ?

I have access to an A310, no idea if the ram upgrade would fit that one
Image
by Gunstick
Wed Nov 13, 2019 5:18 pm
Forum: 3D MODELS
Topic: STFM case remake
Replies: 281
Views: 96530

Re: STFM case remake

Hi

there is a local 3D printing shop in Luxembourg. They powder print nylon. I checked some demo pieces and it seems quite solid.
I could ask them for a quote.

Georges
by Gunstick
Tue Nov 12, 2019 6:38 pm
Forum: HARDWARE DISCUSSIONS
Topic: Put 2 YM2149 into the ST
Replies: 38
Views: 6774

Re: Put 2 YM2149 into the ST

I think the previous design does not need cutting DA4 & DA5 so the whole board could be piggybacked on the existing YM, sparing you painful unsoldering and also no pin cutting. But maybe I am wrong? I'm currently looking for simulation and pcb software for linux. Found kicad with ngspice, but did no...
by Gunstick
Mon Nov 11, 2019 11:13 pm
Forum: HARDWARE DISCUSSIONS
Topic: Put 2 YM2149 into the ST
Replies: 38
Views: 6774

Re: Put 2 YM2149 into the ST

You are a brave man. Hope it works out. In case you don't want to fiddle with that analog switch stuff, you might like my latest sketch. It has extra wires out for DA4/5 for the chips that don't need the bit reversed as well as the flipped one. I don't understand exactly this circuit. Is DA4_0 the ...
by Gunstick
Wed Nov 06, 2019 8:53 am
Forum: HARDWARE DISCUSSIONS
Topic: Put 2 YM2149 into the ST
Replies: 38
Views: 6774

Re: Put 2 YM2149 into the ST

I will get myself a couple YMs and components and cobble together something to check if it works.
by Gunstick
Tue Nov 05, 2019 7:06 am
Forum: MEMBER BLOGS
Topic: Conway's Game of Life on the Blitter
Replies: 7
Views: 3449

Re: Conway's Game of Life on the Blitter

I actually published the fast life as standalone
https://demozoo.org/productions/167685/
But it's only the bootsector, you need a program to write it
So that also exists https://demozoo.org/productions/167683/

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