Am Donnerstag, 9. November 2017, 18:37:20 CET schrieben Sie: > On Wed, Nov 08, 2017 at 11:01:29PM +0000, smf wrote: > >On 08/11/2017 18:06, David Holz wrote: > >>On writing to 00/01, the 6510 enables a Write on the bus but doesn't > >>assert the data pins. In the C64, the net effect is that the lingering > >>prior data value from the VIC-II's bus phase will get written to those > >>RAM locations. > > > >Does it have the same reliability issues to running code in de00/df00 > >from vic fetches, which vary by motherboard capacitance and > >temperature. > > I expect so. BTW, this question was asked here only a few weeks ago, and > if I remember correctly, in reply to my reply, Groepaz posted a link to > his test program that writes and reads the memory locations 0 and 1. its actually quite reliable (just like the unconnected I/O, btw) - reliable enough that some copy protection used it (unfortunately i forgot what game it was... but it was a very good obfuscation) -- http://www.hitmen-console.org http://magicdisk.untergrund.net http://www.pokefinder.org http://ar.pokefinder.org It is dangerous to be right when the government is wrong. <Voltaire> Message was sent through the cbm-hackers mailing listReceived on 2017-11-09 18:01:52
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