Questions tagged [amiga]

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

Filter by
Sorted by
Tagged with
22
votes
10answers
4k views

Why was hardware diversification an asset for the IBM PC ecosystem?

The IBM PC was cloned very early on, and many third parties made hardware peripherals. This required users to run an OS, install drivers, manage IRQs and hardware bus addresses, etc. Why was this a ...
2
votes
0answers
71 views

pfs3 error when copying files

Config: WinUAE 4.2.1, CPU 68020, 24bit, FPU 68882, 8MB FastRam Z2, A1200, CF 4GB Transcend, BetterWB 43, Dopus 4, When I try to copy folders from PC to CF Partition (2.4GB, pfs3) it goes alright, ...
2
votes
2answers
219 views

Amiga Workbench copy command just outputs 'copy mode'

I'm trying to set up my system using UAE 4.2.1 64 bit and an excellent step by step guide provided by phraxoid: https://devtty.io/2018/07/computing/how-to-setup-commodore-amiga-workbench-os/ The ...
5
votes
2answers
1k views

What is this side-scrolling fighting game for the Amiga?

I remember playing this game on an Amiga. I have no idea what it was called.
11
votes
4answers
274 views

Preventing socketed chip corrosion?

I spent a couple hours repairing an Amiga A3000 that wouldn't boot yesterday. The fix was to remove Kickstart ROMs, clean the DIP leads and sockets with contact cleaner, and re-insert. Apparently a ...
5
votes
0answers
115 views

What are all the patches that SetPatch applies to Kickstart?

SetPatch runs as the first command in the Startup-Sequence when Amiga boots up. It applies patches to the code in ROM to fix bugs and also enable features if necessary. For example, I seem to remember ...
11
votes
3answers
1k views

Was there ever a Kickstart that took advantage of 68020+ instructions that would work on an A2000?

Back in the day with my A2500/30, I always wanted to get the 68030 versions of software if I could because presumably I'd be able to get a few percentage more performance in some cases. However, I get ...
5
votes
1answer
109 views

How do I connect an IDE hard drive to an Amiga 4000 tower?

I would like to know how to connect a hard drive to the Amiga 4000 tower. I have an IDE cable from the top right m/b to the IDE CD-drive. I also have what looks like a SCSI cable from the CPU board. ...
12
votes
2answers
331 views

Protected/virtual memory support in classic AmigaOS

It is a well-known fact that AmigaOS is a single address space, totally unprotected memory operating system. The original implementation ran on a Motorola 68000, that did not support virtual memory if ...
5
votes
1answer
346 views

What was Burst Mode on the 68030 and why didn't the A2630 support it?

Inspired by this question, I'm curious what burst mode was on the 68030 and why wasn't it supported on the A2630 accelerator card commonly found in the Amiga 2500/30? I had one of these machines and ...
6
votes
2answers
301 views

How advanced was the Amiga Walker prototype?

The Amiga Walker was a prototype Amiga computer that never made it to market. Wikipedia has some info including a photo of a motherboard. How advanced was the prototype? Could it boot and run Amiga ...
8
votes
2answers
315 views

How did the Amiga uses compare to uses for other personal computers in 1985? [closed]

The Amiga 1000 came out in July 1985. This was an era in which personal computers were designed by their manufacturers to meet a unique set of bespoke requirements. For example, some computers came ...
6
votes
1answer
129 views

Which Amiga systems did access RAM with fast page access?

I'm pretty sure Chip and Fast RAM access on an Amiga 1000 does not support FPM access. Which Amiga system, chipset or motherboard "glue logic" first introduced FPM access to Fast RAM? Which one to ...
6
votes
1answer
201 views

How do you open an Amiga A590 Power supply?

I have an Amiga 590 hard drive, but the power supply appears to be dead on it so I want to take a look inside. I have removed three screws from the underside but it still won't open, acting like there'...
4
votes
1answer
175 views

Create hard disk image

I'm looking for Linux dd command equivalent for Amiga to make image of hard disk. TSGUI not work if disk have broken RDB. Do you know program which can make hard disk image on Amiga?
4
votes
1answer
288 views

Attaching a CD-rom drive for A500

How can you attach a CD-ROM drive to an Amiga 500. Will any external SCSI drive do? Are drivers necessary and available?
11
votes
3answers
403 views

Who invented scrollable screens in Amiga?

A well known feature of Amiga is the ability to have multiple Intuition screens (ViewPorts in graphics.library parlance) that coexist and can be laid out on the screen so that they overlap vertically. ...
10
votes
2answers
316 views

What is the minimum set of Kickstart kernel modules to allow an Amiga to boot?

Amiga OS resident modules (libraries, devices, etc...) are location-agnostic, in that it is technically possible to compile them as location-independent code to be loaded at runtime from disk, or to ...
6
votes
4answers
640 views

Amiga floppy disks and GCR vs MFM

According to https://en.wikipedia.org/wiki/Group_coded_recording the Commodore 1541 disk drive used a particularly efficient GCR encoding scheme to cram 170K onto the same 5.25" disks that in an Apple ...
5
votes
3answers
188 views

Opening or converting GFA Basic files to something readable?

There is a bunch of GFA BASIC for Amiga files (the source code for Blender's ancestor, Traces, downloadable here: http://zgodzinski.com/blender-prehistory/) that I would like to peek at. Despite my ...
2
votes
1answer
463 views

When were other inexpensive computers able to recreate “The Amiga Juggler”? [closed]

The Amiga Juggler was the 2nd very popular demo to appear for the Amiga Computer early in its lifespan. The demo was created by Eric Graham (who went on to develop Sculpt3D) using raytracing to both ...
6
votes
1answer
339 views

Multiple mass storage controllers on Amiga 500 or 2000

I'm in the process of restocking a lost collection of retro machines, including a couple of A500s, a 500+ and 2 A2000s (rev 4.1 and 6) in various states of disrepair. For one of the 2000s I would ...
6
votes
2answers
329 views

How to troubleshoot Amiga 600 power issue?

I have an A600 Rev 2D (schematic), which is dead as a doorknob. It was that way when I acquired it some years ago, and it's mostly been in storage since. Between the 5V rail and GND I measure a low ...
7
votes
0answers
322 views

How many Amiga 3000's were produced?

While revisiting this question: Seeking details relating to Amiga 3000 serial numbers I began to wonder how many actual Amiga 3000's were produced by Commodore. I suspect (like most production ...
11
votes
1answer
239 views

Can I trigger the Amiga ROM debugger from the boot prompt?

Suppose I have an Amiga computer without any working boot disks. Is it possible to trigger the built-in ROM monitor (RomWack or SAD, see https://theamigamuseum.com/amiga-kickstart-workbench-os/guru-...
10
votes
3answers
3k views

What happened to ZIP RAM?

I have several retro machines and add-on cards for the Amiga that use ZIP RAM. This vertically mounted chip design enjoyed a brief popularity in the early 1990s, in between the original DIP DRAM and ...
9
votes
1answer
369 views

Amiga 500+ rev8A, 1 MB chip RAM and 0.5 MB slow RAM

I have an 500+ rev8A, I added the missing 0.5 MB RAM and the U32 to the motherboard. I also have 512 KB in the trapdoor. This results in 1.5 MB chip RAM; but I want to have 1 MB chip RAM and 0.5 MB ...
45
votes
10answers
8k views

Why was preemptive multitasking so slow in coming to consumer OS's?

Preemptive (rather than cooperative) multitasking was a highly-touted feature for PC's in 1996, with its inclusion in Windows 95 for the first time. It was also highly-touted for 2001 Macs when ...
20
votes
3answers
4k views

Why were 3D games on the Amiga not faster than on similar 16 bit systems like the Atari ST

It seems that 3D games, especially simulations like Falcon, were not faster (fps) on the Amiga than on the Atari ST - even a bit slower due to the CPU clock. I was wondering why this is the case, ...
3
votes
2answers
505 views

How were individual bit planes scrolled on the Amiga (OCS)?

Back in my early Amiga days (A500), I remember coding simple demos that would use the dual-playfield mode and scroll them around (at a sweet 60FPS). It was pretty trivial to do with languages like ...
2
votes
2answers
746 views

Commodore Amiga 600 Software Failure. “Error: 8000 0004 Task: 000026D0”

Software Failure on Commodore Amiga 600 when I insert a floppy in drive. Software Failure. Press left mouse button to continue. Error: 8000 0004 Task: 000026D0 Independent from the floppy I ...
8
votes
4answers
1k 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-...
6
votes
1answer
207 views

What did Commodore's AppShell and AppObject do?

Among the many developed but never released software that Commodore developed for the Amiga there should be two applications, called AppShell and AppObject. What were these? Did anyone ever saw or ...
16
votes
2answers
475 views

How to create a switchless multi-system 2 button Atari joystick?

All systems that use the Atari 9 pin joystick standard make use of the following pins in consistent ways, with each direction and the fire button being connected to the ground pin when pushed. 1 - up ...
13
votes
1answer
442 views

How do Amiga “Monitor” drivers work?

A "Monitor" driver for an Amiga is a file which, when placed in DEVS:Monitors, enables additional screenmodes. The standard PAL or NTSC driver, which provides screenmodes compatible with consumer TV ...
5
votes
1answer
227 views

Can't type angle bracket characters in AmigaOS 4.1 on WinUAE

Has anyone else experienced that when running AmigaOS 4.1 inside WinUAE that they can't type the < or > characters? I have a mostly bog-standard American QWERTY keyboard, no special emulation ...
8
votes
1answer
633 views

Why was Windows 3.1 so dreadfully slow on an Amiga A2286 bridgeboard?

Back in the day I had an Amiga 2500/30 with an A2286 as my "swiss army knife" home computer; not only did I have the ability to run MacOS (ShapeShifter) at native speed, but the 8MHz 286 bridgeboard ...
6
votes
1answer
359 views

How to integrate an 512kB EEPROM on a A3660 accelerator board at $00F00000?

I am currently experimenting with Chucky's re-engineered A3660 accelerator board for the Commodore Amiga (3000(T) and 4000(T)). My ultimate goal is to add an additional 512kB EEPROM to the ...
20
votes
4answers
11k views

How can you connect an Amiga 500/600/1000/2000 to a modern monitor?

I have an Amiga 500 that I'd like to get up and running again, but the 1084 monitor with which I used to use it has flyback transformer issues. What options are available to hook it up to a modern ...
3
votes
3answers
1k views

Amiga memory bandwidth

Looking at a timing diagram for the various kinds of memory access occurring on the Amiga http://amigadev.elowar.com/read/ADCD_2.1/Hardware_Manual_guide/node02D4.html it seems to be saying that video ...
22
votes
1answer
4k views

Why do all the Speech Synthesizers have that same Voice?

The first time I ever played with software speech synthesis on a microcomputer (not hardware synthesis, like in TI's Speak & Spell) was around 1983, using S.A.M for the Commodore 64. A year later,...
5
votes
1answer
405 views

Identify this Amiga game: It's just like Rocket League

I remember playing an Amiga game which was very similar to Rocket League, subject to the technology of the time. It was a two player game with a top-down 2D playing area. There was a large puck ...
7
votes
2answers
187 views

Question about external Gary NAND driving _BLIT in depency of _ROMEN

what is the meaning of the NAND external connected driving _BLIT in depency of _ROMEN? I cant see the need mainipulate _BLIT by accessing the ROM. Is this an Gary bugfix? Strangely A500+ does not have ...
4
votes
1answer
165 views

Amiga ed removes flags

Recently I noticed a strange behavior when editing startup-sequence with ED. Unless I call protect startup-sequence rwed before editing it, ed says unable to write the file. Saving the file ...
6
votes
1answer
347 views

How do specify drives to mount when Amiga 1200 starts up

I have an Amiga 1200 with an SD card and Classic WB installed. I have four drives DH0, DH1, DH2, DH3, when I start the machine with workbench it mounts all devices. If if start the machine using skip ...
12
votes
2answers
1k views

What options were available for having an Amiga 1000 not be dependent on a KickStart disk?

I bought an Amiga 1000 second-hand many years ago for $50. In this deal I received a spare motherboard as the one installed in the chassis was upgraded; most notably, it had KickStart on ROM and thus ...
1
vote
1answer
845 views

Amiga 500+ does not start up [closed]

Amiga 500+ does not start up. It has been offline for a considerable amount of time. The machine powers up but does not move from that point. I have inserted the workbench disk. Can anyone advise the ...
9
votes
1answer
343 views

When did Great Valley Products, stop producing hardware?

I had a GVP 68040 card in my old Amiga 2000 (ah those were the days). 25Mhz 68040, 16MB of RAM, SCSI controller to my 750 MB SCSI drive (if that was even 3200rpm I was probably lucky) and it was SO ...
25
votes
1answer
2k views

How can I recover the contents from an Amiga HDD using modern Linux?

I have two Amiga 1200's in pieces. One of them has a 52mb HDD in it and on it is my dissertation from 1995 and all my essays. I want to retrieve the dissertation because it's the only surviving copy. ...
4
votes
2answers
728 views

How to create fast an icon file for Amiga program in WB drawer?

I have copied one program from a floppy to a hdd drawer (I created for it) and I want to start this program directly, without going through Window -> Show -> All Files first in my Amiga ...