A4000 3.1 ROM set.. Or is it?

[x56h34]

It could be that your CPU card is not 3.1 roms compatible? There were some issues in regards to early revisions of A3640 cards, however if that's not the case, you may have defective roms.

If you have installed them correctly (look where pin 1 goes and use it as your guide to correct orientation) and they didn't work, but swapping them with your old 3.0 Roms made the computer boot...then there is a very high probability that your 3.1 roms are faulty.

Try to install only the 3.1 roms and then boot with a "vanilla" A4000 configuration, before adding any expansions, or even memory. So boot with something like only the A3640 card, Floppy drive, 2MB chip ram...or the 030 cpu card, depending on which one you have, and no hard drive connected.

[x56h34]

@Matt_H:

Yeah, or even A1200/A3000 roms.

[x56h34]

If you bought them from a dealer, by all means return them for replacement. Maybe even e-mail them the markings on the roms itself and say that you suspect that those are for a different 32-bit Amiga.

[x56h34]

Unfortunately it was from a private individual many months ago..

Ack, that's bad. He probably assumed that A1200 roms were identical to A4000 roms and advertised them as such, however some people reported success into making an A4000 "power up" (I didn't say work fine, just power up) with A1200 roms. Weird.

Here's the deal:

The A1200 3.1 roms lack some important support which A4000 absolutely must have.

Not 100% sure on this, but maybe they lack Zorro II/III support,  however with PCMCIA support which A4000 can't understand.

To confuse things even further, it's interesting that Commodore on the other hand made 3.1 roms fully compatible between A500/A600/A2000 series. A 3.1 rom for those Amigas carries full Zorro II support, full PCMCIA support (for the A600) and yet successfully manages to provide flawless operation no mater where you insert it, as far as the above mentioned Amiga models go, e.g. it autosenses the model make/environment and adapts!

On the A3000/A4000/A1200 side, they must be genuine roms made for a particular model, and are not interchangeable.