strange and mysterious motherboard

[rbusa]

Just from curiosity:whistle:

I saw two variants of A500: One with C= Logo near the "status lights"
and one with Commodore A500 near the "status lights"

When i whas replacing the FD Drive (by Chinon!), I found on board text like this:


B52 / ROCK LOBSTER
CPR/JSP/CUAY/FISH
RVW/VFA/DCA
GET/LLK/ITCH/BCN
C= A500 REV 6A

And found strange thing: The power light is green instead of red and vice versa

My back sticker on case is:


C= Commodore
MODEL A500
POWER 5V DC 4.5A 12V DC 1A -12V DC .1A
SERIAL NO. 1182420
MADE IN W. GERMANY
Funkentstört n. DBP-Vfg. 1046/84
ATTEMPTED REPAIR BY
UNAUTHORIZED PERSONS
VOIDS WARRANTY


My keyboard layout is German/Deutsch

someone knows what do that strange shortcuts mean ?:hmmm:

[Buleste]

Does it look like this?

http://i44.tinypic.com/2nbekug.jpg
Here's a better image

http://amiga.resource.cx/photos/gallery/a500rev6a-3.jpg

[rbusa]

exactly is it that second. I have on all custom chips C= CSG

[Phantom]

CSG is Commodore Semiconductor Group, known before as MOS Technology.

[rbusa]

http://forum.classicamiga.com/forum/picture.php?albumid=21&pictureid=110
this is CPU

http://forum.classicamiga.com/forum/picture.php?albumid=21&pictureid=113
This one is Paula (?)

[Teho]

And found strange thing: The power light is green instead of red and vice versa

I'm pretty sure my first A500 had a green power light and yellow disk activity light. That one was bought new in '92 (in Norway) so was a newer model. I don't have it anymore so can't check anything else for you though.

[rbusa]

I'm pretty sure my first A500 had a green power light and yellow disk activity light. That one was bought new in '92 (in Norway) so was a newer model. I don't have it anymore so can't check anything else for you though.

Yes. My miggy whas bought in Chritmas '92 it would be never model
or maby it's by layout. All countries, which have letters like Ä, Ö, Ü have the same original layout. My is QWERTZ

[Buleste]

If you want to know which custom chips are which have a look here. (http://www.antiquetech.com/companies/amiga.htm)

[Harrison]

A500's were slightly different over time. The early A500's, mostly made in Germany, had red power lights, a small C= logo and the left Amiga key had the C= logo. Later A500's has the green power light, a larger Commodore A500 logo, and the left Amiga key had the more familiar Amiga A.

On earlier A500's the red power LED would also change brightness to indicate different things happening during operation.

[rbusa]

A500's were slightly different over time. The early A500's, mostly made in Germany, had red power lights, a small C= logo and the left Amiga key had the C= logo. Later A500's has the green power light, a larger Commodore A500 logo, and the left Amiga key had the more familiar Amiga A.

On earlier A500's the red power LED would also change brightness to indicate different things happening during operation.
yep. my power-state LED is changing brightness on POST and guru meditation

[J T]

Just from curiosity:whistle:

I saw two variants of A500: One with C= Logo near the "status lights"
and one with Commodore A500 near the "status lights"

When i whas replacing the FD Drive (by Chinon!), I found on board text like this:


B52 / ROCK LOBSTER
CPR/JSP/CUAY/FISH
RVW/VFA/DCA
GET/LLK/ITCH/BCN
C= A500 REV 6A

And found strange thing: The power light is green instead of red and vice versa


The Amiga 500 was codenamed 'Rock lobster' during development after a song by one of the team's favourite groups, the B-52s.

Dunno what the other stuff signifies.