But you are a good hack!!! On Wed, May 23, 2018, 12:48 PM Jim Brain <brain@jbrain.com> wrote: > On 5/23/2018 4:55 AM, smf wrote: > > On 23/05/2018 00:41, Jim Brain wrote: > > I guess it depends on what one defines as a "hack". This unit simply > engages the GAME line anytime a memory access that should be outside the > C64 is requested. I think that is standard behavior. > > > I don't believe you were supposed to change GAME & EXROM dynamically, > although a handful of projects do for better or worse. > > Ah, then I am a hack, in the grand spirit of hacks :-) > > > When aren't you asserting GAME? > > _game is asserted: > > > - PHI2 is HIGH AND > - Address[15:12] != 0 AND > - Address[15:12] != D AND > - the current PAGE!= 0 > > PAGE is an 8 bit (soon to be 16 bit) value denoting which 4kB page is > mapped into the selected page of main system RAM. > > > -- > > Jim Brainbrain@jbrain.com www.jbrain.com > >Received on 2018-05-24 02:01:43
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