Am Samstag, 8. Februar 2020, 12:21:09 CET schrieb silverdr_at_wfmh.org.pl: > > On 2020-02-07, at 23:36, groepaz_at_gmx.net wrote: > > > > > > "DDR and DATA are both initialized to 0 on powerup/reset. on the C64 > > pullup > > resistors are installed on bits 0,1,2,4 which gives the inital standard > > memory configuration." > > That explains it fully. Question where does > > "DDR and DATA are both initialized to 0 on powerup/reset" > > part come from? > > > see > > https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/CPU/cpuport/ > Originally. Experimentation and observation (initvalue.crt) :) It should be mentioned between the lines in the datasheet though, but i dont recall where exactly. -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net If you look at scrollback and the last 30 lines are from you ... please shut up <Moloch/Arkanix Labs>Received on 2020-05-30 00:53:57
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