On Mon, May 30, 2016 at 04:52:23PM +0200, Gerrit Heitsch wrote: > > -- T2 > > DL -> ADL -> ABL > > 00 -> ADH -> ABH > > (this does a dummy read from the zp) > > X -> SB -> ADD > > DL -> ADL -> ADD > > compute the sum > > > > -- T3 > > ADD -> ADL -> ABL > > (and this now reads the correct address) > > > > -- T0 > > (fetch the first byte of the next instruction) > > DL -> DB -> SB -> AC > > (set flags NZ from DB) > > T0 doesn't quite fit... Shouldn't > DL -> DB -> SB -> AC > > be part of T3 or am I missing something? No, it then would store the result of the dummy read to the accumulator. The result of a read is available to the *next* cycle. Segher Message was sent through the cbm-hackers mailing listReceived on 2016-05-30 16:00:03
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