Questions tagged [atari-st]

For questions regarding the Atari ST range of microcomputers.

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Monitor connector for C64 and ST the same?

I have a monitor (colour) that works on my Atari ST. The connector looks similar to that of my Commodore 64, but it doesn’t seem to fit. Now I don’t know if I just have to use a bit more force, or ...
ABM K's user avatar
  • 472
26 votes
3 answers
3k views

Looking for a 90's sorcery game on Atari ST

I am looking for a game from the end of 80's/early 90's game on Atari ST. Where two wizards, one purple, one red have to turn the color of a checkerboard tiles to its own color using spells. The main ...
Spif's user avatar
  • 263
14 votes
2 answers
548 views

How does the Atari ST's VDI polygon filling algorithm work?

I recently noticed something in Neochrome as well as Larry Mears' "Instant Graphics and Sound" programs: Polygons have slightly different shapes depending on whether an outline is drawn or ...
Kirkman14's user avatar
  • 291
2 votes
0 answers
129 views

Atari 1040 STFM power supply issue & high-pitch noise

I have an Atari 1040 STFM that's been sitting in the basement for about 30 years. It doesn't power on. The power indicator light is not illuminated and there's a high-pitch noise coming from the power ...
Chocula's user avatar
  • 121
21 votes
3 answers
3k views

Can a stock/original Atari ST boot from a hard drive?

It has been my belief that one of the nice features of the original Atari ST is that it has support "out-of-the-box" for a hard disk drive connected via its built-in ACSI port- similar to ...
Brian H's user avatar
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6 votes
0 answers
235 views

Atari ST image viewer with unusual zoom

I'm looking for info on an Atari ST (16-color) full-screen image viewer that I once used. When zooming in the edges between colors were smoothly curved (instead of e.g. no smoothing or interpolation ...
Alex Hajnal's user avatar
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13 votes
7 answers
5k views

Could some 200 line displays have been pushed to 240 lines?

Reviewing Raffzahn's answer about CGA emulators for Hercules displays, and especially his initial (now corrected) note about 720x350 being PAL's natural resolution, I was wondering if 200/400 line ...
airman's user avatar
  • 1,350
24 votes
9 answers
10k views

How did early computers handle mice?

Early computer mice worked by sending a series of pulses; the more rapid the movement, the higher the frequency. How was this handled at the computer end? At one level, it sounds easy: just run a loop,...
rwallace's user avatar
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12 votes
2 answers
3k views

Why do some Atari ST motherboards include many Inductors?

There are versions of the Atari 520ST, and perhaps the 1040ST, that differ in having many discrete inductors attached at the I/O port lines for serial, parallel and floppy ports. The first image below ...
Brian H's user avatar
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7 votes
1 answer
439 views

Does the Atari 1040 STE work with the Atari SM124 monitor?

I have an Atari 1040STE. I'd like to use it with the Atari SM124 B/W monitor but I'm not sure it will work. It's my understanding that the Atari SM124 works fine with earlier Atari ST models, but when ...
Swisher Sweet's user avatar
9 votes
2 answers
453 views

Does "Heart of the Alien" use the same game engine as "Another World"?

Another World is a classical game originally for Amiga and Atari ST and subsequently reimplemented for many retro and modern platforms. As described by Fabien Sanglard the game is implemented in ...
bobeff's user avatar
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3 votes
1 answer
377 views

Where can I donate Old Mags and Media in bulk in UK?

I am taking advantage of lockdown(s) and scanning/imaging all old media to archive.org, but would like to donate the boxes when finished. A bit like Donating old Computer Shopper Magazines The Centre ...
D.Price's user avatar
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5 votes
1 answer
403 views

Cold war submarine game for the ST

I'm trying to recall the name of a game I spent too much time playing on my ST. It was a simulation of cold war sub combat. It took place entirely on a map view, where you controlled NATO subs, ...
Maury Markowitz's user avatar
1 vote
2 answers
416 views

How much memory in this 1040STE system

What is the total size of 1040STE with 4 of these SIMMs installed? How to check the memory using software and which one?
Bartek Malysz's user avatar
3 votes
1 answer
1k views

Atari ST series - bombs on boot

I have a faulty Atari 520STFM additional 4MB ram installed. It shows bombs on boot. I understand bombs are sort of code indicator of what is malfunctioning in the system, similar to what Guru ...
Bartek Malysz's user avatar
14 votes
5 answers
2k views

What was novel about the Atari ST? Did it introduce any innovations?

Recalling the rise of 16bit era, an era that in my memories was defined mainly by Motorola 68k cpu computers: The Mac, brought the GUI interface. The A bomb, the Amiga, with its custom chips-...
Krackout's user avatar
  • 1,528
10 votes
0 answers
346 views

How much did Atari pay for GEM?

Atari licensed Digital Research's GEM graphic user interface for the ST. As https://www.filfre.net/2015/04/the-68000-wars-part-2-jack-is-back/ puts it: And of course in the wake of the Macintosh the ...
rwallace's user avatar
  • 60.2k
9 votes
2 answers
2k views

How to backup/dump Atari 520st floppy disks on modern hardware

I know the real answer is to download cracked games but from the era before internet got afordable, I have a lot of community games which never reached the Internet and that I would like to rescue as ...
user2284570's user avatar
13 votes
2 answers
777 views

Atari ST DRAM timing puzzle

From the Atari SM124 Monochrome Monitor Service Manual, I get that the video signal timing for one line is 20µs. With the horizontal resolution of 640 pixels, this gives a 31.25ns pixel clock. Using ...
airman's user avatar
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2 votes
1 answer
153 views

Atari 1040STFM PSU Hissing, high pitch sound when on

I have an Atari, which is working correctly, but the power supply makes this hissing noise as soon as it is turned on. What may cause it?
Bartek Malysz's user avatar
4 votes
1 answer
189 views

MASS MicroSystems MO/128 Magneto-Optic Drive mystery

I found this drive in one of Atari lots. Apart from few mentions in old articles I can't find any info whatsoever. Can you help please?
Bartek Malysz's user avatar
2 votes
2 answers
927 views

What capacitors to use in Atari 1040STE power supply

I'm working on Atari STe, which has dodgy caps on PSU board. 2 of them are in desperate need for replacement. Can anyone suggest quality brand to extend the life as much as possible?
Bartek Malysz's user avatar
9 votes
3 answers
3k views

What is the best option to connect old computer to modern TV

I was exploring different options of connecting both my Atari ST and C64 to a modern TV. I opted for a composite signal passed through a cheap AV to VGA converter, and although the display works, ...
Bartek Malysz's user avatar
4 votes
1 answer
659 views

Atari 1040ST AV video output - blurred and jagged vertical edges

I have an AV cable that connects Atari 1040STE with a AV to VGA converter. For some reason the vertical edges are not sharp, rather jagged or pixelated. I red that old atari would have an issue with ...
Bartek Malysz's user avatar
11 votes
2 answers
820 views

Looking for ATARI-ST Graphics Image

I am hoping that someone here collects computer images from days gone by. Many years ago when I used my ATARI-ST I made two drawing I believe I used the art program NEOCHROME, or possibly DEGAS. The ...
LewinskyS's user avatar
  • 549
6 votes
2 answers
595 views

Where to find a ROM dump for the Atari ST cartridge 'ACTION'

Back in the day I owned a couple Atari ST, I used a cartridge based program for writing video games. It was called "ACTION" Does anyone remember this program or even better, know where I can get a ROM ...
LewinskyS's user avatar
  • 549
2 votes
1 answer
408 views

Seeking source code for Balls (Atari ST/STOS game)

I'm seeking the source code for an old Atari ST game STFBalls1 a.k.a STBalls a.k.a. Balls which was released as shareware back in the early '90s. According to the author, anyone making a shareware ...
Alex Hajnal's user avatar
  • 9,320
9 votes
5 answers
2k views

Polygonal 3D game for the Atari ST featuring spaceships

I've been trying to track down a 3D game from the late '80s/early '90s. It was on the Atari ST and featured simple polygonal (space)ships1 floating over flattish polygonal ground with the occasional ...
Alex Hajnal's user avatar
  • 9,320
9 votes
4 answers
3k views

Were external floppy drives for Atari ST and Amiga inter-compatible?

Were external floppy drives for Atari ST and Amiga inter-compatible? For example, Commodore 1541* had its own serial bus protocol. But what about the external 3.5" DD floppy disk drive on 23pins D-...
Francesco B's user avatar
7 votes
2 answers
2k views

What changes made some Atari ST software incompatible with the Atari TT?

The Atari TT was based on the earlier ST line of computers but with a 32 MHz 68030 instead of an 8 or 16 MHz 68000. There were a number of extensions made (e.g. new video modes) and the memory ...
Alex Hajnal's user avatar
  • 9,320
3 votes
2 answers
2k views

3D Printed Replacement Key Caps for Atari 1040ST

How can I replace/repair broken Atari 1040ST key caps using 3D Printer? Switches are in good condition. Only the key caps are to be replaced. Did Atari followed any industry standards like Cherry MX,...
wizofwor's user avatar
  • 2,758
13 votes
4 answers
942 views

What was this game with a "Conan" style character on Atari ST?

This is about a 2D (third person) game I remember seeing being played on an Atari ST computer. In the game the player controls a "Conan" style character (holding a sword, if I remember correctly). In ...
ravn's user avatar
  • 357
9 votes
5 answers
2k views

Connecting an Atari 130XE to SM124 monitor

I've got an Atari 130XE 8bit computer that has Composite Video Output. Also, I've got an Atari SM124 monitor designed for the Atari ST 16-bit line of computers. If you look at an Atari 130XE packing ...
user12711's user avatar
  • 263
18 votes
3 answers
2k views

How did the original Apple Macintosh and Atari ST use protected mode?

The Macintosh, ST, and Amiga were all 68000 CPU systems released in 1984-85, along with their respective new Operating Systems. While this was 5 years before protected mode became commonplace on Intel ...
Brian H's user avatar
  • 60.5k
18 votes
3 answers
7k views

Adjusting focus for old CRT monitors

I have an old Atari SC1224 CRT which has badly lost focus over the years. After taking the cover off, I can see various focus controls that can be adjusted by screwdriver. Question: is there a ...
jamesfmackenzie's user avatar
13 votes
1 answer
213 views

Videoprocessor with custom horizontal sampling

I have a variety of videoprocessors (Micomsoft Framemeister, Micomsoft SC-512N1-L/DVI, Sync Strike) to help me get the best possible RGB picture out of my retro computers/consoles. However one issue ...
jamesfmackenzie's user avatar
9 votes
1 answer
389 views

Remote Debugging on the Atari ST

Were there ever any remote debugging tools for the Atari ST line of machines? When developing games in full screen modes, switching away to a debugger seems quite cumbersome if you need to remember ...
Matt Lacey's user avatar
  • 2,144