Am 03.02.24 um 17:16 schrieb A. Fachat: > > Am 03.02.24 um 17:08 schrieb Robert Di Benedetto: >> Dumb question but - if WDC revs the mask and adds asynchronous >> support, does this mean that simply replacing the VIA's in the stock >> C64 and 1541 gets us faster I/O? Or is additional modification needed? > > > No. > > 1st. The CIA cannot be replaced with a VIA, they are too different. > > 2nd. Certain wires are missing on the boards > > 3rd. you'd need to add support for the fast protocol into the ROMs. > >> >> -----Original Message----- >> From: A. Fachat <afachat_at_gmx.de> >> Sent: Saturday, February 3, 2024 5:30 AM >> To: cbm-hackers_at_musoftware.de >> Subject: VIA shift register "bug" >> >> Hallo all, >> >> >> in case you haven't noticed, I have investigated the VIA shift >> register bug together with Dave McMurtrie and Martin Thierer, and got >> some news from WDC about it - all published in my latest two YT >> videos (still have to write it up...) >> >> >> The VIA shift register bug: https://youtu.be/6cwVQahVCdc >> >> The VIA followup: https://youtu.be/nvnz_34uWSg >> >> >> Oh, btw. I implemented the Commodore Fast Serial bus with a VIA shift >> register as well. Code is here >> https://github.com/fachat/via-sr-bugtest/blob/main/fiec/upet-fiec-core.a65 >> >> >> >> Best regards, >> >> André >> >>Received on 2024-02-03 18:00:19
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