Questions tagged [amiga-1200]
For questions regarding the Commodore Amiga 1200 microcomputer.
15
questions
4
votes
2
answers
2k
views
AmigaOS 3.9 - where can I buy it?
I've been looking all over for a source to buy AmigaOS 3.9.
My A1200 has Workbench 3.2.2 and it would be nice to get OS 3.9 since I'm also adding an 68060 card and lots of RAM.
Where might I find OS 3....
- 143
8
votes
1
answer
670
views
Where can I find a schematic for the Amiga 1200 PSU?
I have tried searching for "amiga 1200 psu schematic" and many variations, but haven't been able to find an A1200 power supply schematic. I was able to find an A500 PSU KiCAD schematic and ...
- 819
2
votes
1
answer
355
views
A1200 Amitek Hawk, Guru Meditation 8000 000B when loading games from Gotek
Hardware:
A1200
CF 4GB (sys part 800MB)
KS 3.1 40.68
ClassicWB
Amitek Hawk 4MB, FPU 68882, oscillator 28MHz
Gotek, Flash Floppy 2.1.4
When Amitek is used the machine boots from Gotek USB adf file ...
- 4,174
5
votes
0
answers
152
views
CF with Workbench not loading in WinUAE but works on real A1200
I have a CF HDD with installed WB3.1, which works as expected on real A1200. Yesterday I wanted to copy over the latest ACA1221 soft, took the CF out, connected to PC just as normal. The WinUAE is set ...
- 4,174
4
votes
1
answer
172
views
ACA1221 cooling
I have an ACA1221 accelerator (not EC). The card is clocked at 28MHz and get's VERY hot. Even when running on default 17MHz the temperature can go as high as 65'C. Is there any way to use any of the ...
- 4,174
2
votes
1
answer
262
views
Software Failure after RAM upgrade Amitek Hawk
I have Amitek Hawk for my A1200, the board came with wrong RAM and apps were crashing with 8003 Guru error. After contacting the seller I was told by mistake wrong SIMM was shipped and I received a ...
- 4,174
12
votes
1
answer
929
views
What is this Amiga 1200 mod?
I got an Amiga 1200 off ebay and it works great, board looks perfect, no leakage, no bad traces, nothing, and yet I have this mysterious mod I've never seen before. Does anyone know what it is?
- 4,174
9
votes
1
answer
313
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 ...
- 805
8
votes
1
answer
1k
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 ...
- 805
29
votes
3
answers
4k
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. ...
- 391
12
votes
3
answers
847
views
Will using a clockport RTC card on an Amiga 1200 clash with the RTC on an accelerator card?
I have an accelerator card fitted to my Amiga 1200. The accelerator includes a real-time clock, but I noticed that the soldered-on rechargeable battery was in danger of leaking, so I cut it off before ...
- 5,271
13
votes
2
answers
2k
views
What was the A1200 Flash ROM support meant for?
Question inspired by this answer's last paragraph: https://retrocomputing.stackexchange.com/a/1307/2155
The Revision 1 A1200 schematics show that the system originally had support for a two internal ...
- 3,716
11
votes
1
answer
904
views
HxC floppy emulator on Amiga 1200, second virtual drive disappears after reboot
I've recently purchased a HxC/Lotharek SD Card floppy drive emulator. It's working well replacing DF0: but I'm seeing some odd behaviour with its emulation of DF1:.
On the first boot after power-up, ...
- 5,271
31
votes
1
answer
7k
views
What are the Amiga 1200 timing fixes?
I have read that the Amiga 1200 may need certain "timing fixes" to be applied to the motherboard in order to use CPU accelerators. What are these timing fixes and why are they needed? Is there one ...
- 2,225
8
votes
1
answer
436
views
Are there any trapdoor slot video cards for a non-tower Amiga 1200?
Are there any trapdoor slot video cards for a non-tower Amiga 1200 ?
(That excludes Zorro expansion cards, PCI mediator cards and BlizzardPPC+BVision - as all of those require tower case,
also ...
- 2,628