> However, feel welcome to use d700 Unfortunally I need 256 bytes for the window PLUS some bytes for I/O. An other solution is decrease the window to 128 bytes but I realy dislike that. > Having said that, it is possible that all > non-standard writes in the I/O region will > be lost by the SCPU, and so only DE00-DFFF > are only valid use by this and other projects. My first reaction is: "that's the SCPUs problem, not mine!" but that sounds a little bit selfish. I have given a thought to this window problem and the only solution I can think of is cart which disables the window in favour of carts using this area. But this means extra hardware as these carts are in chain and _NOT_ parallel. And I also know some carts which use BOTH IOx-lines and therefor cannot be used in combination with any other cart at all (like FC3). I prefer the VIC-II de-mirroring solution: easy, quick and dirty :) Flash idea: what about demirroring a CIA and using $D7xx? Groetjes, Ruud http://Ruud.C64.org - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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