> You'll have to work around the PLA though. Writes to the $8000-9fff > area are directed to the underlying RAM. Yes, but the data shows up at the expansion port as well. When _reading_ this area, the PAL enables ROML presuming EXROM is (L). When writing this area ROML is kept (H) to avoid busclashes. But what hinders you to make your own $8000/9FFF decoder for writes? I made an ROM-emulator using this principle. I hope this is enough explanation. If not, I'm willing to give more details. Groetjes, Ruud http://home.hccnet.nl/g.baltissen/index.htm - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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