Classicamiga Forum Retro Edition
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Thread: Different A500 versions
woody.cool 17:33 15th April 2010
Hi all,

I know it's been a while since I posted on here, but I'm after some information if anyone knows.

From what I know, there was quite a few different versions of the A500. I'm aware of three different specs (but not mobo revisions) of the A500:



Is anybody aware of any other specs of A500? What about motherboard revisions used etc.? Pro & Cons of different A500 mobo revisions etc.?

Whatever I find out (via your feedback) I will also use to update the Classic Amiga Wiki.

Thanks in advance
woody.cool
[Reply]
Phantom 17:43 15th April 2010
I remember also that on earlier A500s the Caps Lock LED was red, and after replaced with a green one, if I'm not mistaken.
[Reply]
woody.cool 17:50 15th April 2010
Originally Posted by Phantom:
I remember also that on earlier A500s the Caps Lock LED was red, and after replaced with a green one, if I'm not mistaken.
The ones with the red Caps Lock lights had the red Power LEDs too. So when I ment red Power LED, I ment red Power LED & Caps Lock LED .... I forgot to add that.
[Reply]
Phantom 18:03 15th April 2010
Ah, ok. No problem m8y.
[Reply]
woody.cool 18:06 15th April 2010
I'm just wondering whether there's any more different versions/specs of the A500?
[Reply]
Buleste 21:22 15th April 2010
Have you checked the Amiga Hardware Database?
[Reply]
Phantom 21:25 15th April 2010
Taken from there:

Originally Posted by :
Motherboard revisions

revision 3
512 kB Chip RAM on motherboard as 16 chips
Kickstart 1.2 ROM

revision 5
Fat Agnus 8370 (NTSC) or 8371 (PAL)

revision 6
Fat Agnus 8372A (part of the ECS chip set) supports 1 MB Chip RAM
Agnus is rotated 90 counter clockwise
512 kB Chip RAM on motherboard as 4 chips
empty places for other 4 chips giving 1 MB RAM on the motherboard
Kickstart 1.3 ROM

revision 7
-

revision 8
Kickstart 2.04 ROMs and ECS chip set: Fat Agnus (8375), Super Denise (8373)
A500:
512 kB Chip RAM on the motherboard
battery and clock circuit is missing
A500 Plus:
1 MB Chip RAM on the motherboard
battery backed up real time clock

[Reply]
woody.cool 22:15 15th April 2010
Originally Posted by Buleste:
Have you checked the Amiga Hardware Database?
Originally Posted by Phantom:
Taken from there:

Originally Posted by :
Motherboard revisions

revision 3
512 kB Chip RAM on motherboard as 16 chips
Kickstart 1.2 ROM

revision 5
Fat Agnus 8370 (NTSC) or 8371 (PAL)

revision 6
Fat Agnus 8372A (part of the ECS chip set) supports 1 MB Chip RAM
Agnus is rotated 90 counter clockwise
512 kB Chip RAM on motherboard as 4 chips
empty places for other 4 chips giving 1 MB RAM on the motherboard
Kickstart 1.3 ROM

revision 7
-

revision 8
Kickstart 2.04 ROMs and ECS chip set: Fat Agnus (8375), Super Denise (8373)
A500:
512 kB Chip RAM on the motherboard
battery and clock circuit is missing
A500 Plus:
1 MB Chip RAM on the motherboard
battery backed up real time clock
LOL! I should've checked there first!
When I get round to it, I'll update the Classic Amiga Wiki article for the A500 with the information above.
[Reply]
Spirantho 13:10 12th April 2011
I've just been given another A500...
This one's interesting though, because it has a red power light.

"Aha!", you cry, "That's because it's an early A500!".
However, this one (serial number 522315) has an ECS Agnus and 1MB chip RAM (in the trapdoor slot, natch).

I always though the power light turned green before the ECS chipset was introduced! Not here though!

Incidentally, the warranty seals are both in tact!

Interesting, huh?

Edit: Oh, incidentally, the power light doesn't turn off when the filter goes off, it goes dim, as you'd expect.
[Reply]
Harrison 16:50 12th April 2011
Right at the end of the A500's life Commodore were using whatever components they had available to make each batch, which is why some ended up with more A500+ insides that a normal A500 should. Your red LEDs might just have been used from old stock.
[Reply]
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