On 7/7/2017 7:08 AM, Pasi 'A1bert' Ojala wrote: > On 07.07.2017 14:12, Anders Carlsson wrote: >> For a long while there was a misunderstanding about the VR/W signal >> on the bus that it would be for video R/W but it is not, it is just a >> bad naming convention of the signal. > As far as I remember off-hand, the VR/W is indeed the VIC-I R/W > signal. The problem is that the cartridge port only carries the 6502 > databus, not the part of the bus that it shares with VIC-I. I.e. > during a VIC-I access the cartridge databus is separated from the > video databus. > > -Pasi > > > Message was sent through the cbm-hackers mailing list It is, but it is a preferred signal to use in lieu of CR/W. I believe VR/W is gated with PHI, and so is a cleaner signal to use. JIm -- Jim Brain brain@jbrain.com www.jbrain.com Message was sent through the cbm-hackers mailing listReceived on 2017-07-09 04:00:02
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