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07 May 2018, 21:50

I recently bought a ACA500+ and it worked fine with Workbench and whdLoad, except that I had problems with some games that required 1MB chipram. I later realized that this was because that my A500 had rev 3 board with Agnus 8371 that did not allow me to map the trapdoor expansion as chipram.

I then bought a Agnus 8372A to replace the 8371, but after replacing the chip, the Amiga would not start at all (black screen when powering on).

My question now: did anyone here ever had success replacing a 8371 with a 8372A on a rev 3?

Ps. my Amiga is PAL and I disconnected pin 41 of the new 8372A when I tried to install it.

07 May 2018, 21:50	#716
jokkemokke Posts: n/a	I recently bought a ACA500+ and it worked fine with Workbench and whdLoad, except that I had problems with some games that required 1MB chipram. I later realized that this was because that my A500 had rev 3 board with Agnus 8371 that did not allow me to map the trapdoor expansion as chipram. I then bought a Agnus 8372A to replace the 8371, but after replacing the chip, the Amiga would not start at all (black screen when powering on). My question now: did anyone here ever had success replacing a 8371 with a 8372A on a rev 3? Ps. my Amiga is PAL and I disconnected pin 41 of the new 8372A when I tried to install it.