On Sun, Jul 8, 2018 at 7:14 PM, Gerrit Heitsch <gerrit@laosinh.s.bawue.de> wrote: > On 07/08/2018 02:37 AM, Nejat Dilek wrote: > > > You might want to also take a look at the Char-ROM output of the PLA, that > one also shows interesting things. > > Gerrit > I will. Actually, finding that it follows the VIC's work from PHI low I just noticed that next to /KERNAL line there is /CHAROM. The first thought coming to my mind that they interfered with each other. I tried modulating the kernal changing CHAREN signal previously but it didn't work. Also previously I tested code that employed custom charset, that didn't work either. I'll have a closer look later sampling the shared input of /KERNAL and /CHAROM. On Sun, Jul 8, 2018 at 6:50 PM, Mia Magnusson <mia@plea.se> wrote: > > Or require a longer _KERNAL pulse than this false pulse? > How? I use this pulse to interrupt an attiny85. Even if I check for the signal again in the interrupt it's all open to every kind of race conditions since this false signal pops up quite randomly (unless tamed) before and/or after intended access. Side note : I don't want to code this in assembly, I prefer C if I can :) Any other hardware means to filter out 41nsec pulses from 500nsec pulses by the way? (Hmm, maybe using some logic gates with >41nsec propagation delays) Regards, NejatReceived on 2018-07-09 01:01:42
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