Stupid question about Fat Agnus

[Jeff]

It's been a LONG time, but I had a Rev 6A 500 that I installed an 8372B 2Meg agnus in.  As I recall it involved populating the motherboard with 4 more (256x4) memory chips, changing some soldered jumpers, and possibly a change to the A501.  Then you had an A500 with 2 Meg Chip!

Sorry if this was OT.  The hack came from Amazing Computing in the early 90's I think.  They also had a version for the A2000. I would like to see that, BTW if anyone still has it.

Jeff

[Jeff]

Hey!

The Amiga 500 rev 6a and Amiga 2000 rev 6.x 2Meg Chip hacks were in Amazing Computing in February 1993 with a correction a couple months later. (May?)

I was mistaken. I had to remove the 4 (256x4) dram chips on the motherboard and socket all 8 dram locations.  Then you install 8 (1Meg x 4) drams for a total of 2 megs on the motherboard when used with the 8372B Agnus. I don't think the 8375 would work.

There are also some other simple mods that must be done. Address line changes via jumpers I think, it's been years.  My 500 worked great like that.  You can also cut something on the A501 to disable the ram and still allow the Battery Back-up clock to function.

I would like to do this to one of my Amiga 2000's if I can find the mod again and the time to do it.

Jeff