Questions tagged [amiga]

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

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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 ...
23
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6answers
23k 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 ...
11
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4answers
942 views

Amiga floppy disks and GCR vs MFM

According to the Wikipedia article on GCR, 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 drive only ...
21
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4answers
1k 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 ...
25
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4answers
2k views

What exactly was the Amiga Ranger?

Amiga's history includes something called "Ranger" that supposedly was either meant to be the next generation system to be released after the Amiga 1000 was released, or the codename for the next ...
20
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7answers
3k views

Was Amiga the last of the home retrocomputers sold?

The Commodore-Amiga was offered for sale to home users from 1985 (original A1000 in North America) until 1996, when Escom stopped selling the A1200. By 1996, Apple was selling PowerPC-based Macs for ...
5
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0answers
227 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 ...
12
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2answers
1k 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 ...
9
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2answers
433 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 ...
23
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2answers
4k views

How to convert Amiga DMS to ADF?

Our demoscene group managed to release only one demo before it fell apart, but these being the early days of the Internet in my country, and me getting lucky with obtaining access to it and creating ...
50
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7answers
20k 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....
25
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4answers
3k views

Why does MP3 audio decoding overwhelm retro CPU's?

Many retrocomputers from the late 80s and early 90s had audio DAC hardware support. This includes the Amiga, Classic Macintosh, and PC's with SoundBlaster add-on cards. Despite the fact that the MP3 ...
29
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3answers
3k 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. ...
6
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2answers
812 views

Attaching a CD-rom drive for Amiga 500

How can you attach a CD-ROM drive to an Amiga 500? Will any external SCSI drive do? Are drivers necessary and available?
8
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1answer
210 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 ...
4
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1answer
234 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?
9
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1answer
279 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
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1answer
239 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. ...
34
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2answers
7k 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 ...
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 ...
14
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2answers
2k 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
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0answers
739 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
166 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, ...
13
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4answers
2k views

Amiga 500 OCS/ECS vs Mega Drive VDP

Superficially the Amiga 500 and Mega Drive are similar. Both run a Motorola 68000 CPU at similar clocks and both have dedicated hardware for sprite and other graphics operations. Comparing the arcade ...
12
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2answers
961 views

Replacing the floppy drives in my Amiga 3000

My Amiga 3000 is starting to show its age, and recently one of the two internal floppy disk drives appears to have given up the ghost... I'd like to replace the drive but the A3000 case doesn't have ...
30
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5answers
3k views

What were the differences in floppy disk formats between Amiga and IBM/PC compatible computers?

The capacity in Amiga Old File System format (OFS, OS version 1.x) was 840KB, with the Fast File System ("FFS" (!)) introduced for OS 2.x onwards able to store 880KB. The PC format stored 720KB on the ...
8
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2answers
450 views

Create an Amiga 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?
21
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3answers
2k 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 ...
14
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1answer
396 views

What does the H protection bit mean under classic AmigaOS?

The AmigaOS file protection bits allows for Read, Write, eXecute, Delete permissions on files, similarly to Unix (save for the Delete permission). Additional bits are Archive (reset when a file is ...
8
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1answer
643 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 ...
59
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2answers
18k 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 ...
11
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2answers
522 views

Amiga Video Toaster support

What features of the Amiga chipset architecture and/or Amiga OS made it possible to design the Video Toaster for the Amiga? Why weren't there similar (cost-effective) video products for the PC or Mac?...
17
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1answer
991 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 ...
10
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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
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1answer
771 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 ...
8
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2answers
560 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 ...
9
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1answer
591 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 ...
3
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2answers
347 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 ...
8
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1answer
308 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. ...
2
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1answer
371 views

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

I play around with emulators, and would love to go back to my roots, with physical ZX81, BBC Micro, Amiga, etc. Unfortunately, those all require a TV as output. I suppose that I could buy a cheap one ...
26
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5answers
2k views

Did any Amiga 500 games or programs (apart from paint programs) use more than 32 colours?

While the Original Chip Set (OCS) and Enhanced Chip Set (ECS) Amiga computers had the 32 x 2 colour EHB (Extra Half-Brite) and 4096 colour HAM (Hold And Mofify) screen modes, where these ever used ...
22
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5answers
5k 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, ...
24
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3answers
1k views

Was the MC680x0's TAS instruction forbidden on Amiga systems only when operating in CHIP memory?

(Note: a previous version of this question asked about the CAS instruction, that was added by Motorola from the MC68020; the original one is the TAS instruction). TAS is the acronym for Test And Set, ...
6
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4answers
2k 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 ...
6
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1answer
230 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 ...
3
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1answer
358 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.
14
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2answers
515 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-...
13
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2answers
923 views

Why did Commodore not upgrade OCS straightforwardly to 32-bit architecture?

This is somewhat of a speculative question... Amiga's 1985 Original Chip Set is inherently a 16bit architecture (the data bus is 16bit, registers are 16bit, the blitter itself is 16 state machines ...
10
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1answer
599 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? ...
11
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3answers
539 views

Set keyboard layout in Amiga Workbench 3.1

I did a fresh install of the Cloanto amiga-os-310-install.adf disk to a hard drive, and then I wanted to change the keyboard layout to Swedish. I tried SYS:System/SetMap s but then I've learned that ...