Re: Serial IEC bus for PETs

jbevren_at_starbase.globalpc.net
Date: 2000-11-07 01:28:46

I highly encourage you to use the vic-20's IEC routines.  The PETs dont
suffer the timing issues the c64 and c128 do, and thus can benefit from
the vic20's noticeably faster routines.

Of course, you'd have to do a UJ- to get the speed from the drive.. the
point, however, is that its possible.


On Mon, 6 Nov 100 g.j.p.a.a.baltissen@kader.hobby.nl wrote:

> Hallo allemaal,
> 
> > There is a hardware solution to this problem on my IEEE488 page.
> > It is a small 6504 computer that translates PET IEEE488 into 
> > VC1541 serial IEC.
> 
> I prefer the "direct solution" ie. connecting an IEC-device directly to the 
> PET. You'll need at least 6 I/O-lines: ATN-in/out, CLOCK-in/out and 
> DATA-in/out. The userport can supply these lines. The you need a 7406 to buffer 
> these lines. 
> The next thing is the software and here lays the trouble, or hopefully: laid. 
> One could extract the SRC from the C64-Kernal but obviously Andre has done this 
> in one or another way. The only thing one has to do is to transform the SRC of 
> Andre's design to the CBM. I'm volunteering to work on this.  
> 
> Groetjes, Ruud
> 
> http://home.hccnet.nl/g.baltissen/index.htm
> 
> 
> 
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