From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2004-07-16 10:27:56
On Fri, Jul 16, 2004 at 03:53:01PM +0800, ncoplin@orbeng.com wrote:
> >Now the big question: why this delay ???
>
> I'm not sure about the IEEE parallel specification, but the serial one has a
> minimum "time between bytes" (tbb) which needs to be maintained. Are you
> meeting this spec with the delay and not without?
Care to tell what will go wrong if that spec is not being maintained? My
serial bus routines on the C2N232 are ignoring this spec, and the transfer
works on the VIC-20 and C64 (LOAD, SAVE, GET#). (The remaining problem,
inability to talk to a 1541, cannot be caused by the missing delay, because
it hangs already at the end of the first ATN byte.)
BTW, Jim, have you made any progress lately? Any code or diagrams that we
could have a look at? Specifically, I'd like to see how you will avoid
retransmissions with GET# without reducing the buffer size to 1 byte.
Marko
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.