Op de afgelopen bijeenkomst in Maarssen heb ik een mooie A500 gescoord. Hij doet het best goed met wat uitzonderingen. Hieronder wat er loos is. In het Engels, want ik heb het ook elders gepost en geen zin het nog eens in het Nederlands uit te schrijven :)
Recently I got an A500 rev5, kick 1.3. It looks pretty good, almost no yellowing and given the fact that the ACA500plus was about to be released when I saw it I was easily convinced buying it. It also came with an A501 512kB memory expansion. That had some minor battery damage which I removed (battery and damage).
It runs fine most of the time, however I encounter some issues from time to time. The only major issue I can reproduce is with the Budbrain Psychotic Megademo.
I got out my old floppies (I still have my very yellowed original rev 5 kick 1.2 A500 stored somewhere). I tested a random couple of disks, most ran fine, but I also had some issues. But these are some observations of faulty behaviour.
- Defender of the Crown: Runs fine without the A501
- Defender of the Crown: Runs fine with the A501, but gives a guru when ctrl-A-A rebooting.
Nothing I really mind though.
- Budbrain Psychtic Demo
The Original disks crash early on (no not the guru at the beginning of the demo
), so I created some new ones from TOSEC adfs. Still the demo keeps crashing. It's either during depacking the first movie part or during depacking the Kaos demo, ll on the first disk. In both cases you a quick rainbow flash (overscan area) an then a crash/guru.
I tried all following hardware options, all result in same behaviour.
- With the A501 memory expansion and without it.
- With an 8371 Agnus and with an 8372a Agnus
- Without an ACA500plus: i.e. using native MC68000
- With an ACA500plus using the MC68EC000-10 on the ACA500plus. I tried many combinations here
- With/without force PAL
- With/without 1MB chip hack
- With/without 7 MB fastRAM
- Kick 1.3 native, Kick 1.2 & 1.3 from ACA
- And maybe some other variations
As said no difference in bahaviour.
So I guess I can exclude the following being faulty:
- Memory expansion, or even if it is faulty, it's not causing the issue I'm facing, since it also occurs without the a501
- CPU
- Agnus
Since the crash happens during depacking, with my lack of in depth Amiga technical knowledge, I would assume that I can exclude Paula, Denise and the CIAs as well? That leaves the mainboard memory as main suspect. Is that a correct analysis? However I did test the (mainboard and expansion) memory successfully with systest disk https://github.com/keirf/Amiga-Stuff...master/systest
Any help is appreciated!
Recently I got an A500 rev5, kick 1.3. It looks pretty good, almost no yellowing and given the fact that the ACA500plus was about to be released when I saw it I was easily convinced buying it. It also came with an A501 512kB memory expansion. That had some minor battery damage which I removed (battery and damage).
It runs fine most of the time, however I encounter some issues from time to time. The only major issue I can reproduce is with the Budbrain Psychotic Megademo.
I got out my old floppies (I still have my very yellowed original rev 5 kick 1.2 A500 stored somewhere). I tested a random couple of disks, most ran fine, but I also had some issues. But these are some observations of faulty behaviour.
- Defender of the Crown: Runs fine without the A501
- Defender of the Crown: Runs fine with the A501, but gives a guru when ctrl-A-A rebooting.
Nothing I really mind though.
- Budbrain Psychtic Demo
The Original disks crash early on (no not the guru at the beginning of the demo
), so I created some new ones from TOSEC adfs. Still the demo keeps crashing. It's either during depacking the first movie part or during depacking the Kaos demo, ll on the first disk. In both cases you a quick rainbow flash (overscan area) an then a crash/guru.I tried all following hardware options, all result in same behaviour.
- With the A501 memory expansion and without it.
- With an 8371 Agnus and with an 8372a Agnus
- Without an ACA500plus: i.e. using native MC68000
- With an ACA500plus using the MC68EC000-10 on the ACA500plus. I tried many combinations here
- With/without force PAL
- With/without 1MB chip hack
- With/without 7 MB fastRAM
- Kick 1.3 native, Kick 1.2 & 1.3 from ACA
- And maybe some other variations
As said no difference in bahaviour.
So I guess I can exclude the following being faulty:
- Memory expansion, or even if it is faulty, it's not causing the issue I'm facing, since it also occurs without the a501
- CPU
- Agnus
Since the crash happens during depacking, with my lack of in depth Amiga technical knowledge, I would assume that I can exclude Paula, Denise and the CIAs as well? That leaves the mainboard memory as main suspect. Is that a correct analysis? However I did test the (mainboard and expansion) memory successfully with systest disk https://github.com/keirf/Amiga-Stuff...master/systest
Any help is appreciated!
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