On Mon, 25 Oct 1999, Mike Naberezny wrote: > I remember a few months back someone was attempting to start a list of > what devices use which I/O ranges. Do you guys know what areas these > devices (RL, REU, SL/T232) actually occupy in $DE and $DF? Wasn't this discussed a few months ago here? Someone was going to compose a list of the addresses. Maybe Richard Atkinson? Anyway, the REU occupies $df00-$df0a or so, and there are mirrors at $df10,... (or maybe it was $df20; I don't have the REU at hand right now). I modified one REU so that it can coexist with an Action Replay cart (which uses $de00-$deff for one 7-bit write-only register and $df00-$dfff for ROM or RAM). The modification was a 3-position switch that would choose the REU registers to be read/write, write-only or completely disabled. In write-only mode, detecting the REU reliably is impossible, and not many programs are likely to work in that mode. But prlink does work. :-) > I sent CMD a few e-mails but it must be a secret because they have > ignored my (very polite) requests. Maybe they are afraid of people making clones? :-) Marko - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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