Hallo Frank, > No. 6526 has also input data latching. Would you be so kind to share this secret with us? I read the PRG again but couldn't find anything mentioning "latch". Remark: I have the impression that some of the readers mix up "latching" with "handshaking". > http://c64.uz.ua/misc/65xxinterfacing.zip Thank you very much. BTW: I thought you had an URL of your own? Groetjes, Ruud http://Ruud.C64.org ----- Original Message ----- From: Frank Kontros <frank@kontros.uzhgorod.ua> To: Ruud Baltissen <cbm-hackers@dot.tml.hut.fi> Sent: Friday, April 06, 2001 9:41 AM Subject: Re[2]: Article PC-card > Hello Ruud, > > RB> I mean 8 bit transfer to port A of the VIA. AFAIK the 6526 can only read a > RB> port, the VIA can latch the data on the port. I intend to use it for the 16 > RB> bit transfer for an ISA-card: D0..7 are read by the CPU, D8..15 by a port. > > No. 6526 has also input data latching. VIA has also a register w/o > handshake control. > > >> I can dig it up. I even have the working board somewhere with 65c22. I > >> can send you the scanned pages (in german), that I used for design. > > RB> This triggered the thought that the 64'er published an article about it. But > RB> which magasine??? I would be happy anyway with the article, thanks. > > Okey. I found it. It's not a 64'er article. It was scanned from book. > BTW, I forgot who was sent to me. > > Anyway the zipped pages are just online. You can DL it from: > > > I also checked my schematics and so used only a 1/2 74LS74 to drive phi2 > of 6522 and no more gates for delay. > > Best regards, > Frank > > > - > This message was sent through the cbm-hackers mailing list. > To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi. - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tml.hut.fi.
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