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Ace2 whitebg.jpg
Ace2 a500 overview.jpg
Ace2 a500 closeup.jpg
ACE2b package

ACE2 stands for Amiga Chipram Extender 2MBytes. It is installed in the socket of the Fat Agnus chip of your OCS/ECS Amiga. ACE2 is compatible with these Amiga models:

  • A500 up to board rev. 7
  • A1500 and A2000, Rev. 4.1 and higher
  • CDTV
  • A2500 Rev. 4.1 and higher

In addition to installation in the Agnus socket, ACE2 gets more signals from the Gary chip. The adapter that goes between the Gary and the main board is part of the product.

As opposed to previous designs of the 1990s, no jumpers on the main board or memory expansions need to be changed, and no soldering needs to be performed. Further, ACE2 does not rely on existing memory to be present: The complete 2MBytes of Chip ram is located on ACE2, and the chip ram on the main board of your computer will not be used any more. If you have a trapdoor memory expansion in your A500 computer, it can remain in its place, but ACE2 will automatically switch it off - even if it does not have a switch. This way, you can install a trapdoor memory expansion for its realtime clock, even if the memory part of that expansion is not working any more.

ACE2 uses an ECS Agnus that is switchable between PAL and NTSC video mode by software. It is compatible with Genlock interfaces. ACE2 starts up in NTSC mode. If you own an ACA500 or ACA500plus, you can fix the video mode to your preferred setting.

This product uses two key components that are not available on the world market any more: The 2MB ECS Agnus chip and the PLCC84 adapter socket. It is a one-time production run with no chance for more units.



ACE2b is the successor product to ACE2 with identical product specifications.


For disk-based games and with no other possibility to switch to PAL mode: The bootblock on this disk switches to PAL mode and expects the next disk to be inserted for booting: [[Media:Switchboot.lha]Blahlaber]


The product comes with a short manual. In case you've lost it, you can find the PDF version of it here:

ACE2 manual (English, July 2018) ACE2_manual_E.pdf

ACE2 Bedienungsanleitung (Deutsch, Juli 2018) ACE2_manual_D.pdf

ACE2b manual (English, December 2020) ACE2b_manual_E.pdf

ACE2b Bedienungsanleitung (Deutsch, Dezember 2020) ACE2b_manual_D.pdf


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