Switching ROM version between A500 and A500+

[CU_AMiGA]

Hello,

My mate recently got himself an Amiga - 2 infact from a car boot sale. Firstly i will tell you the specs:

A500+  

With Kickstart and Workbench 2.04 with 1Meg CHIP RAM (default) and the 1Meg FAST RAM 501 upgrade.

A500

With Kickstart and Workbench 1.2 with 512K CHIP RAM.

The A500+ has a fault onit, the right audio port is very loose and no longer works. On the A500, the keyboard was {bleep}ed upas well as the casing. So i decided to switch some of the parts, i put the keyboard and casing from the A500+ and put the A500 mobo in and connected the keyboard. I also put the 501 expansion in and the A500 now has 1Meg RAM altogether.

Now, here was the problem. I tried to put the Kickstart 2 ROM from the A500+ and installed it in the A500 where the Kickstart 1.2 ROM was originally. Now, when i turned on the machine, i got a red screen (like James Bond), i know this means something, is it a Chip RAM problem? I installed back in the Kickstart 1.2 ROM and the A500 now works, but is it possible to change the ROMs around?

Cheers,

[CU_AMiGA]

Hi Guys,

Thanks for the replies. Okay, if memory serves me i think the A500 mobo was a rev.5. So that was probably the reason (i had suspected this a little but forgot to mention). Anyway he told me he was using it for games mainly so i think its best it is left the way it is, which is a good setup for games. He's leaving the other Amiga for spares.