Revisiting this thread after 5 years.
https://twitter.com/plgDavid/status/1270410663840681985?s=20

Recently designed a MC6809E ICE for various purposes including this one, and put it to test this week.
[img]https://pbs.twimg.com/media/EZL86CwWkAApnZp?format=jpg[/img] (picture shows it on a Bally Sente main board for a test)

New findings: It appears the address map banking is more complex that originally thought. Currently figuring it all.

Other good news. I stripped the m6809e core from MAME, ran it on my STM32 on the ICE, and can get the same results as when I put an original MC6809E in.
So I dont know if there are instances of MAME cores used to make other MAME cores, but I thought this was funny.
[img]https://pbs.twimg.com/media/EaKBRmZUEAEgmmE?format=jpg[/img]

Last edited by plgDavid; 06/10/20 02:17 PM.