#amiga 2000

[commodorez]

Chilling at the local vintage computer meetup again! Nice to see the local folks, and the various machines they decided to bring. It's mostly playing video games, and chatting, alot more ad hoc than a VCF (which is kinda the point).

[yodaprod]

1987

[mamotreco]

Amiga 2000 Photo by Mamotreco. Shot on Fujifilm X-T4 & 50mm f2 prime lens. Check out my YouTube channel and my music on Bandcamp

[krjpalmer]

Amazing Computing July 1990

The Commodore Dynamic Total Vision did get on this issue’s cover with respectful coverage inside (including mentioning that Nolan Bushnell, associated with the early video games days of Atari, would be helping to pitch this multimedia box), although its feature story was on 68030 accelerator cards to bring the Amiga 2000 up to the new Amiga 3000′s level. In the “Roomers” column, “the Bandito” reflected on the CDTV and Nolan Bushnell and scoffed a bit at Apple II peripheral manufacturers trying to find less faded pastures in offering wares for the Amiga (one of them, Applied Engineering, had run an ad in Amiga World this month; it would also get around to producing Macintosh add-ons).

[swarmik]

Amiga 2000 (1987) - part 2

It took me two years to find some time to disassemble the machine and then another year to start fixing it. Repairing the PSU with the blown EMI suppression capacitor was an easy task and that’s what we started with. Worse part was the instability – machine often crashed to a guru meditation error during certain tasks and sometimes a restart resulted in a “color screen” error.

David created and programmed a small device with eight differential inputs for voltage measurement (and logging) so we could check if the electrolytic capacitors did their job properly. To our surprise, they were fine. We also tried different programs to test memory and other hardware but the computer successfully passed all the tests.

Based on the Guru error codes, we found the root cause in the faulty EPROM chip (Kickstart 3.1). It started to lose data and reading of certain regions of the chip was sometimes affected. Thus, CPU executed faulty code (like a word or long word access on an odd address boundary).

The system is now running with Kickstart 1.3 and Workbench 1.3 and all original upgrades are inside except one. The Commodore A2630 accelerator card (25MHz 68030+98882, 2MB 32-bit RAM) crashes with dark blue and green screens and I’m afraid that there is a mechanical issue.

Next steps: Fix A2630 and reprogram the EPROM chip.

[retrocgads]

USA 1988

[wifilip]

[peech-emoji]

࿙amiga࿚