Questions tagged [amiga]

For questions related to the Commodore Amiga family of personal computers.

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34 votes
5 answers
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Was the Amiga ever used by any U.S. Government agency?

This is a long shot question, and I'm asking only because, well, I'm not entirely certain why I am asking... NBC Nightly news did a short piece on April 18th, 2022 talking about the IRS being ...
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14 votes
3 answers
3k views

How exactly did Amigas without a RTC "work around" this to produce "internally consistent" timestamps? [duplicate]

I recently read about how even the non-RTC-equipped Amiga computers has some sort of "clever trick" in them which caused the timestamps for saved files and whatnot to still be "...
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  • 141
17 votes
7 answers
3k views

Were all Amigas except for A1000 un-upgradeable OS-wise?

In his latest video, "The 8-Bit Guy" on YouTube talks about the original Amiga 1000: https://www.youtube.com/watch?v=kjapiUQOi2s One of the things he mentions is that, unlike all later ...
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25 votes
5 answers
3k views

Why did the stock Amigas not have a battery for keeping the time/date?

The Amiga computers were advanced machines meant to do all sorts of things, including file management. They had a GUI OS (Workbench) and everything right from the very start. They were not some games-...
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  • 251
6 votes
3 answers
548 views

Were commercial Amiga floppy disks shipped with write protection?

In this Amiga "quick kickstart guide" magazine thing that I have from when I bought an Amiga 1200 long ago (it seems to be printed in late 1995), they really go out of their way to point out ...
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  • 69
7 votes
1 answer
522 views

What was an Amiga "X-Drive"?

In computer magazine personal ads from the 1990s, I notice multiple mentions of Amigas "with X-Drive". Searching online, I find no mention of this. (Possibly this is because search engines ...
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5 votes
6 answers
802 views

Amiga game about a detective or a spy in some kind of hotel building

There's a game I played as a young child in the 90s that I am 99% sure was on an Amiga. I've searched high and low and cannot find it, and am beginning to wonder if my memory is not accurate. I ...
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15 votes
9 answers
4k views

Cost of PC vs. Amiga 500 in Europe

Based on Commodore sales figures, and other historical claims, the Amiga achieved its peak popularity in 1990-91, with European sales being the leader. By 1990, with the rapid fall in PC clone prices, ...
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16 votes
1 answer
357 views

What happened to IntelliFont (i.e. Amiga vector fonts)?

One of the oft maligned weaknesses of AmigaOS 1.x was that the included bitmap fonts were not very good, especially when compared to those included with Classic Mac OS. Commodore closed this gap with ...
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  • 56.8k
18 votes
2 answers
2k views

What made the Amiga "Genlock-able"?

Right at the moment the original Amiga A1000 was being introduced, Commodore was already advertising its ability to use a Genlock peripheral, and promising that Commodore's own Amiga 1300 Genlock ...
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4 votes
2 answers
206 views

How to get the inner dimension for Amiga Intuition window with GIMMEZEROZERO Flag?

I am sizing the contents of my Intuition window relative to the space available in the window. A regular window exposes its initial dimensions via my_window->Width and my_window->Depth, however ...
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20 votes
6 answers
9k 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,...
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19 votes
2 answers
2k views

Why do drives occupy memory on Amigas

I was reading this question, and it sparked an old memory. I had an Amiga 600 a long time ago. And I used to play Secrets of Monkey Island on it, great game. But then I upgraded the computer and ...
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  • 34.3k
6 votes
3 answers
242 views

Looking for a multiline text gadget for Intuition on a 1.3 Amiga

I've come to understand that Intuition, the GUI framework on the stock A500 has 4 types of gadgets: 'boolean' - checkboxes and buttons 'Proportional' - sliders string inputs integer inputs I'm ...
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4 votes
0 answers
220 views

Amiga 500 programming for newbies with gnu c++ @all [closed]

my Amiga 500 is dead, but I loved the time with it, so I use Windows UAE. I'd like to programming a little bit it with the Visual Studio C++ or other GNU C/C++. It is hard to do this? I have no ...
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7 votes
0 answers
187 views

How does Amiga HDToolbox calculate size?

I've been toying around with various drive geometries using the classic HDToolbox from 2.x/3.1 on my Amiga. What I've discovered is the total size calculated is always 1 cylinder short of my own ...
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  • 8,436
5 votes
5 answers
549 views

Save state systems

With an Amiga A500, Action Replay cartridge (v1.5 or later) and memory expansion, it was possible to save a copy of the state of memory, much like a save state in an emulator. Were there any other ...
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  • 391
9 votes
2 answers
389 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 ...
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  • 545
10 votes
1 answer
294 views

How to find what is using Chip RAM?

My AmigaOS should have more Chip RAM available to use than it reports (only 800 kB). Is there a way to find what is sitting in Chip RAM and how to move it to Fast RAM instead?
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5 votes
1 answer
394 views

How can I run OpenSSH under AmigaDOS?

I want to use OpenSSH for Amiga, copied ssh and other files to OS:Utilities from extracted archive, but I'm unable to run the binary. Tried to set protection but it didn't help either. How to make it ...
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12 votes
1 answer
409 views

Amiga A1050 schematic

I’m trying to resurrect a Craigslist Amiga A1000. After replacing Paula it now boots. Several basics still missing (RF shields, screws, port covers, etc.) but essential electronics are okay. However, ...
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4 votes
1 answer
338 views

How does stack size affect functioning of AmigaOS and programs?

A few weeks back I had an issue with a Python script resetting my Amiga on execution. Someone suggested to change stack size in startup-sequence to 4096. I just read that it can be set up to 2500000. ...
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18 votes
3 answers
2k views

Which retro system controllers are compatible with Amiga out of the box

I read an article that people were using various means of user input in their Amiga 500 computers as an alternative to joystick. Most notable, Sega Mega Drive, Sega Master System, CD32 / Competition ...
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3 votes
1 answer
257 views

Python2.4 Amiga OS M68K restarting system and where to get libs

Just installed python 2.4 on my Amiga os3.9. sometimes when I run a script the machine restarts. Any idea why that may be? It has 030 with MMU, 64MB RAM and 1MB chip ram. All MMU libs are installed. ...
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8 votes
1 answer
322 views

Amiga File Manager with keyboard navigation

Is there a file manager for Amiga OS 3.x, something like Directory Opus but keyboard-driven, which feels more like Midnight Commander or Total Commander, where all the navigation is done by keyboard ...
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1 vote
1 answer
263 views

Amiga OS3.9 unable to run iGame error #8000000B

AMIGA CDTV, 68030 MMU, no FPU, KS 3.1.4, WB3.9 + BBs, MUI3.8, Required Libs. I followed all the requirements swapping guigfx with non-FPU equivalent and I'm not able to get iGame to run. When FPU is ...
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0 votes
0 answers
94 views

best port (on laptop) for using laptop display as monitor for an Amiga [duplicate]

i am looking to order an Amiga 500. i wanted to use my Thinkpad L420's display as a monitor, but it seems it doesn't have a port that would work for that. the thinkpad needs replacing anyways, so i ...
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5 votes
2 answers
538 views

How to SSH from Amiga to remote Linux host

With a new purchase coming in shortly I wanted to ask what do I need to be able to SSH to a remote host from an Amiga: Make modem work and connect to my network: https://www.ebay.com/itm/KCWIFI-PRO-...
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28 votes
1 answer
3k views

Why are the later revisions of the Motorola 68060 heavily sought after by Amiga fans?

I have come across a few sources online in forums and on YouTube information related to using the Motorola 68060 in Amiga accelerators and the difficulty in sourcing genuine late revision parts. ...
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3 votes
1 answer
197 views

How do I setup this Kickstart switcher?

I can not find any documentation for this Kickstart switcher. It's labeled LS A9211-3 © FH 1992. How must the jumpers J1 and J2 be set and where must the KB and RES lines be connected to? I want to ...
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  • 131
4 votes
1 answer
147 views

How do I detect if AmigaDOS dos.library/CurrentDir() fails?

It seems that the primary system call to change a new directory within an Amiga process is dos.library/CurrentDir(lock) but the documentation does not tell me how to detect if it succeeded. Quoting ...
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  • 1,699
22 votes
1 answer
2k views

Why do Amiga Libraries have negative entry points?

As described in these answers, the jump table offsets to functions contained in an AmigaOS library are always negative values. The reason for this is not intuitive to me, but I suspect Carl Sassenrath ...
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8 votes
4 answers
3k views

What are people using old (and expensive) Amigas for today? [closed]

I recently sold a defective Amiga 1000 on Ebay for over $300. I'm going to list my old Amiga 1200 and expect to get over $1000 for it since its working and "souped up". This made me wonder: ...
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  • 139
3 votes
0 answers
151 views

Use MAME debugger for Amiga software [closed]

I have used the MAME debugger a lot with arcade machine emus. Now I would like to use it to help debug a game I build for Amiga. Having set up A500 emulation in MAME by adding the roms, I can start it,...
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10 votes
3 answers
1k views

Why does an Amiga's floppy drive keep clicking?

I seem to remember that an A500 (probably A600 too) would keep emitting a click from the floppy drive. I think this was only with no disk in the drive, but I'm not sure. What was that?
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  • 34.3k
14 votes
2 answers
2k views

How would I reliably detect the amount of RAM, including Fast RAM?

If I was to write an Amiga game, what would be the best/most reliable way to detect how much RAM is actually available? Looking at Action's Guide to AGA-Fixing!, he mentions Faulty Memory Detection: ...
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  • 525
7 votes
3 answers
578 views

How does Symphonie Pro actually work?

I just happened upon this video: https://www.youtube.com/watch?v=6tNizdyx-DE It's a selection of Amiga music produced using a program I've never heard of before: "Symphonie Pro". Does ...
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13 votes
3 answers
2k views

Is there a seamless, Wine-like AmigaOS emulator for Linux, specifically for text-based programs?

After trying out FS-UAE on my Fedora Linux system, which worked quite nicely, I got to thinking. Even though when the Amiga was originally released in the middle 1980s, it was revolutionary in its ...
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  • 193
10 votes
3 answers
1k views

What performance increase did an Amiga typically get with an FPU?

After seeing this question, I reminisced about how my old Amiga 2500/030 had a 68882 FPU unit. I recall that the Amiga's floating point routine library was smart enough to detect if you had an FPU or ...
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  • 14.3k
5 votes
3 answers
708 views

What tricks or techniques were used to speed up AmigaOS boot

I did an installation of Workbench 3.1 grounds up. The system takes a moment to boot, well over a minute. I've watched a YouTube video where the system booted in seconds. I have another image of ...
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2 votes
1 answer
363 views

How to get started with writing drivers for amiga OS

I would like to learn how to write drivers for Amiga OS. Seems like a daunting task, but I have spare time and I find great value for amiga (CDTV) community in particular. Currently if a CD ROM breaks ...
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7 votes
2 answers
642 views

Amiga OS 3.1 vs 3.5 vs 3.9 system difference

I'm trying to find some resources on different versions of Amiga OS (aka Workbench) especially if there were any major changes to the OS architecture, resource use and drivers (with a goal to make ...
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6 votes
1 answer
370 views

Could the Apple IIGS play any and all Amiga MOD files?

The Apple IIGS has a wavetable synthesis sound chip with dedicated 64 kilobytes of RAM. I assume the sound architecture dictates that samples have to be loaded into that dedicated RAM to be able to be ...
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8 votes
3 answers
1k views

Why does the Amiga 500 have half the HSYNC pulses seperately compared to those in CSYNC?

After many years I bought myself a new old Amiga 500 (rev 5) and wanted to hook it up to an LCD monitor (Samsung Syncmaster 152N) that has a VGA input. I tried hooking it up directly by making an ...
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21 votes
5 answers
2k views

How and why did Intel make the PCI bus "CPU Agnostic"?

Intel invented the original 32/64-bit PCI bus in the early 1990s to replace the decade old ISA bus used in PC's. It was immediately popular (in comparison to Micro Channel or EISA), being both faster ...
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  • 56.8k
4 votes
2 answers
882 views

Joystick adapter from 9-pin to USB

I have still a couple of old C64/Amiga joysticks and I'd like to use them on the New C64, which has USB ports. Is there an adapter from 9-pin male to USB? This 3-year old article references a company ...
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  • 310
9 votes
1 answer
779 views

On Amiga, what happens when I write to $DFC5A0 by mistake?

I'm fixing a game (TV Sports Basketball) that tries to write in audio data (using the range $DFF0A0 to $DFF0D0) but for some reason (bad programming), the index is sometimes (not always) bogus MOVEA.L ...
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24 votes
1 answer
2k views

Who ended up owning Commodore's semiconductor IP?

The question of ownership of Amiga-related intellectual property post-Commodore is famously difficult to answer. My question is: does anyone "own" Commodore's semiconductor IP now, and if so,...
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1 vote
1 answer
388 views

Help in finding signals on schematics

Where are the missing signals that I can't pair between amiga external drive connector and gotek drive? I'd like to connect GOTEK to CDTV, there is a way to do it directly (caddy died), but I can't ...
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5 votes
1 answer
405 views

How does DMACON/R registers on Commodore Amiga platform work?

I have a specific question about the DMACON/R registers found in Commodore Amiga range of computers. As you may know they are the DMA control registers that controls all the DMA channels used by the ...
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