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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: barney on January 30, 2010, 04:09:48 PM

Title: Any major differences between motherboard versions???
Post by: barney on January 30, 2010, 04:09:48 PM

I see that the Amiga 2000 has several motherboard versions (4.3, 6.2, etc.).  Other than physical differences, are the newer motherboard more compatible with software/hardware?  What is the big difference?  

This may sound weird but I found that the AGA2000 FF looks much sharper in my old 4.3 motherboard than my 6.2.  I don't know why this is but it is very interesting.

Barney

Title: Re: Any major differences between motherboard versions???
Post by: ElPolloDiabl on January 30, 2010, 04:54:23 PM

There were some big differences with A2000. Germany built the first ones. Then Dave Haynie took over. His versions are awesome, naturally.

Title: Re: Any major differences between motherboard versions???
Post by: Zac67 on January 30, 2010, 06:49:27 PM

The German 4.0 rev is based on the A1000 chipset (DIL Agnus, OCS, 512 KB chip RAM, different CPU slot, no composite output). >=4.1 are from West Chester with the A500's chipset (PLCC Agnus, OCS or ECS, up to 1 MB chip RAM, standard CPU slot, composite video, Buster), rather minor differences.

Title: Re: Any major differences between motherboard versions???
Post by: barney on January 31, 2010, 04:35:19 AM

That is very interresting.  One motherboard I have is a version 4.3 and I have yet to really see any difference at all besides the look.  In fact, I have had fewer problems with that board than my 6.2.  

Barney

Title: Re: Any major differences between motherboard versions???
Post by: JimS on January 31, 2010, 02:29:40 PM

Rev 6 changed from the 512k Agnus to the 1 meg version, and changed from 256kx1 DRAM chips to 256kx4. I believe that's also when they put in fuses for the mouse & video ports.