Questions tagged [amiga]

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

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3
votes
1answer
144 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. ...
12
votes
3answers
1k 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 ...
2
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0answers
102 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. ...
7
votes
1answer
265 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 ...
1
vote
1answer
122 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 ...
0
votes
0answers
84 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 ...
4
votes
2answers
290 views

SSH from Amiga to remote linux host, what do I need?

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 amiga: make modem work and connect to my network: https://www.ebay.com/itm/KCWIFI-PRO-c64-...
26
votes
1answer
2k 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. ...
3
votes
1answer
137 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 ...
4
votes
1answer
109 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 ...
21
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1answer
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 ...
7
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4answers
2k 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: ...
2
votes
0answers
106 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,...
9
votes
3answers
932 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?
13
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2answers
1k 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: ...
7
votes
3answers
289 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 ...
9
votes
1answer
1k 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 ...
8
votes
3answers
698 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 ...
2
votes
2answers
395 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 ...
2
votes
1answer
265 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 ...
6
votes
2answers
403 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 ...
5
votes
1answer
251 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 ...
8
votes
3answers
844 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 ...
18
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5answers
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 ...
4
votes
2answers
379 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 ...
6
votes
1answer
441 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 ...
21
votes
1answer
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,...
1
vote
1answer
145 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 ...
5
votes
1answer
312 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 ...
0
votes
2answers
345 views

CF partitions not showing up in Workbench

4GB Compact Flash KS 3.1 40.68 WB3.1 Latest WinUAE I just created a Compact Flash (compatible Transcend) partitions under Workbench on latest WinUAE using this guide. Despite following the steps my CF ...
12
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2answers
2k views

Should I use the internal or external drive for loading Amiga 500 games?

I have a working (I think) Amiga 500 system with an internal DF0 drive and an external DF1 drive. The Amiga 500 powers up with Workbench v1.3. Can anyone tell me how to access a game disc (Marble ...
5
votes
0answers
272 views

What are the needed jumper settings for a 68060 accelerator for an Amiga 3000T?

I'm trying to install a 68060 accelerator on an Amiga 3000T, but I cannot figure out the correct jumper settings. The information I've found online is: J100 CLK90 Delay jumper. This Jumper has three ...
10
votes
2answers
495 views

How do I tell vasm to allow white spaces?

I have recently been learning to use vasm. For those that don't know, vasm is a cross-platform assembler for multiple types of processors such as the M68000. http://sun.hasenbraten.de/vasm/ I am ...
9
votes
1answer
507 views

How Amiga A590 autoboot ROM and bootable floppy disk works?

Commodore A590 was a peripheral hard drive and memory expansion unit for Amiga 500/500+ computers. It provides SCSI and XT-harddrive controller and 2MB Fast Ram. Here is the Big Book of Amiga Hardware ...
22
votes
6answers
2k views

Does the “Amiga Client for Novell NetWare” exist?

On page 139 of Brian Bagnall's book "Commodore: The Final Years", there is the statement that at CeBIT Hannover in March 1989, Commodore announced (amongst other things) "Novell Netware for Amiga". I ...
11
votes
2answers
709 views

How are Amiga Kickstart Relocation Files (.RTB) created?

Examples of Amiga Kickstart files (ROMs) can be 256k (1.2/1.3) or 512k (3.0/3.1) binary files, located at $FC0000-$1000000 or $F80000-$1000000 Several programs are able to "soft-kick" Amigas, i.e. ...
35
votes
4answers
8k views

Why didn't Apple sue Commodore over the Amiga's GUI?

Famously, in the late 1980's Apple sued Microsoft over the "look and feel" of Windows 2.x. The claim was that Windows breached Apple's copyright by being too similar to the Mac UI. Apple ultimately ...
70
votes
7answers
35k views

Why was the Kickstart 1.x “Insert floppy” graphic so bad?

Anyone who used an pre-Kickstart 2.0 Amiga will be very familiar with the "Insert Workbench floppy" image: I realise that this is subjective, but the image has always stuck me as ... well, a bit ugly....
2
votes
0answers
1k views

How many Amiga 590 units were sold?

The A590 was an external hard disk for the Amiga 500, in 'sidecar' form factor, that could also hold an extra megabyte of RAM. How many 590s were sold, throughout its life?
4
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1answer
288 views

What is the largest RAM expansion for Amiga or Commodore? [closed]

What is the largest RAM expansion being manufactured today for Amiga and Commodore 8-bit?
20
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5answers
6k views

Were the custom chips in the Amiga exploited for their hardware bugs like the ones in the C64 and Atari 8 bit computers were?

Here we are some decades on from the C64, and other 8 bit computers. New ideas that resulted in some new graphics effect or mode seem to happen, though we may be near the end of all that. Took a ...
23
votes
3answers
3k views

Why was it not possible to cost-reduce the Amiga 500?

According to 'Commodore: The Final Years' (whole trilogy highly recommended, BTW), page 129, 'Jeff Porter realized it would not be possible to significantly cost reduce the Amiga 500 to get it into ...
17
votes
1answer
1k views

Can you split resolutions and scrolling (horizontally) on an Amiga?

Some time back I asked if it was possible to get more than 8 sprites on a single scanline with the Amiga using a copper list. It seems it is quite possible indeed! Now I am wondering if it is ...
11
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4answers
1k views

What graphics sytems used display lists?

As near as I can tell, there seems to have been roughly speaking two schools of thought when it comes to graphics hardware among early consoles, what I will call the Atari and Texas Instruments ...
9
votes
1answer
808 views

Did any significant programs or environments take advantage of the Rexx which came with PCDOS 7 (aka PCDOS 2000)?

Being an Amiga fan, I have a fondness for the Rexx language. On that platform, almost every significant program supported ARexx, allowing a high degree of interoperability and customability. So when ...
60
votes
2answers
19k views

What is the “two-drive trick” that can read Amiga disks on a PC?

Standard belief is that the floppy disk controllers used on PCs are incapable of reading Amiga floppy disks, due to the PC disk controller expecting a very specific low-level format of disks, whilst ...
2
votes
1answer
594 views

Which retro personal computers, if any, can use a modern day VGA monitor? [closed]

I play around with emulators, but I would love to go back to my roots, with physical ZX81, BBC Micro, Amiga, etc. Unfortunately, those all require a CRT monitor, or a TV, as output. I suppose that I ...
10
votes
1answer
720 views

Any Issues with running Workbench 1.3 on a Kickstart 1.2 Amiga 500?

I own a fairly early Amiga 500 with Kickstart 1.2 ROMs, Commodore Logo key and the OCS Agnus 8371. Is this system completely compatible with Workbench 1.3? Or does WB 1.3 require Kickstart 1.3 ROMs? ...
3
votes
1answer
372 views

Is the 3000T's case made by Commodore, or was it stock from elsewhere?

Is the 3000T's case made by Commodore, or was it stock from elsewhere? I need a side panel for one.
6
votes
1answer
259 views

Why does my Amgia 3000 show no Fast RAM even though the ZIP sockets are populated?

I am trying to get an Amiga 3000T up and running, all seems good but there's no Fast RAM. All Zips ard populated. Is there any (easy) way to test the ZIPs? Also, could something like a bad cap kill ...