Hallo Bogax, > First off let me say I wasn't considering ...... I have to study this befor I can give you a real reply. But I still have question: > .... UMAX is asserted to suppress RAM To be honnest, I didn't understand the explanation of UMAX, maybe partly because I have no idea how you initialize this mode. > or stay out of the VIC's way during bad lines. > (haven't thought that far) This is where the VIC tristates the 6510, right? My idea was using the READY-line anyway. READY is activated until a positive AND a negative edge of CLK2 has been detected. Includ BA as an extra input to this detection mechanism and problem solved ( I think). Groetjes, Ruud http://Ruud.C64.org - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
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