http://www.zilog.com/frames/serial/scc_escc_iscc_manual/scc_iscc.html
last time I checked. Excellent manual, BTW.
> Excellent. Given the relatively high price of the everything but 'dumb Z8530'
> cards getting a generic Z8530 sync driver into the kernel would be something
> everyone would probably like (except maybe the smart sync vendors). Whats
At least the DIL packaged Z8530 varients are pin compatible. But the
85230 isn't worth the price (EUR 16 I think). And the orginal 8530 seems
to be out of production.
> more if anyone here has had too much caffeine I think RTLinux is probably up
> to doing T1/E1 on a Z85EC30.
<pffrtt> (Now I'm wet with tea.)
Good luck to anyone trying this...
Seriously, the greatest problem for a generic driver is the number
of configurations to take into account. There are numerous ways
to configure receive and transmit clock source and output. You'll
have to insert software delays for every access to the chip unless
your card does it in hardware, then there are cards out there that
don't allow direct access to the Z8530 control and data ports.
Not to mention that the chip was designed for systems supporting
interrupt vectors on the bus.
Well, that thing is a pain in the <censored> on PC hardware.
PS: If there is anyone out there that can explain why a channel sometimes
completely locks up on transmit underruns and how I can get out of the
mess without a complete channel reset (resets the whole chip with some
mask revisions or manufactures, ARGH!), let me know. ;-)
Joerg Reuter http://poboxes.com/jreuter/
And I make my way to where the warm scent of soil fills the evening air.
Everything is waiting quietly out there.... (Anne Clark)
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