Difference 3032 vs 4032

[Blacklord]

Original message by Anders Carlsson

I have a complete, working PET 3032. I also have a loose 4032 motherboard, which I believe is mostly fine, perhaps a broken 6522. I'm considering selling it to a friend who has a 3032 with a faulty motherboard.

My question is whether the 4000 series board is functionally equivalent with the 3000, in such terms the power connector, keyboard and most importantly monitor can be connected to it without blowing up? I understand the 4000 series, in particular the newer universal boards have a different design and they came with a newer version of Basic, but for anyone who doesn't have any particular requirement about which PET model they own as long as it works, is it safe to plug in the 4032 board in a 3032?

I may try myself in the weekend, but I'd rather not want to break any of my equipment before knowing it is supposed to work.

[Blacklord]

Original message by Anders Carlsson

No clues or cautions? Hm, I'll better ask on the mailing list before doing something stupid.

[Blacklord]

Original message by Nils Eilers

The labels like 3032 or 4032 doesn't specify a special motherboard - so nobody won't be able to tell you whether they are compatible or not. CBM boards are designed in a way that any later board can replace any prior board - even the latest version from the 8296 can replace a 3032 board.

Check the ASSY NO that's on the board. If they are the same, the boards are the same and can replace each other. My CBM 3032 has ASSY NO 320351.

If you want to replace the old dynamic board without CRTC 6545 with a newer board with CRTC 6545 you can find the pinouts of keyboard, crt etc. in the circuit drawings you can find online.

4032 and 8032 usually have the same board with CRTC 6545, only jumpers are set.

[Blacklord]

Original message by Anders Carlsson

The bad motherboard is an Assy 380351 (perhaps a misread of 320351) sitting in a 2001N labeled 3032 on the front side. The two boards I'm in the process of checking both are Assy 320350 Rev E, both once pulled from a machine labeled 4032. Would those probably be close enough to replace the bad motherboard?

[Blacklord]

Original message by Anders Carlsson


Ok, it seems in this case 320350 = 320351.

Nils emailed me this link, which he was unable to post on the forum because one needs to write at least 30 messages before one can post a link:
http://www.amiga-stuff.com/hardware/cbmboards.html