On Sun, 25 Oct 1998, John Ruschmeyer wrote:

> No problem... patch coming by seperate post...

Thanks!

> > I'm a bit confused. The driver seems to want 16 i/o ports, but the isapnp
> > mapping is wanting 32 ports. What's up with the other 16?
> 
> To tell tell the truth, I'm not sure... A real 53C80 has 8 ports while a
> 53C400 has 16. 
> 
> From what I can tell, there are a number of chips which are based around
> a 53C80 core, but seem to do things differently. For instance, NatSemi
> had an "enhanced" chip which purported to be faster. OTOH, Trantor had
> at least one custom varient (the one used in the T-160) which only
> appears to be compatible at the lowest levels (i.e., it work fine
> in polled mode, but seems to have its own ideas about DMA-driven modes).
> (This is why T-160s don't seem to run with most "generic" 53C80/53C400
> drivers.

Dang!

> Second, PNP NCR 53C80 is almost an oxymoron. Most of these cards are pretty
> simple affairs with little more than some glue logic and a lot of jumpers.

The 436 can do PNP, and in fact is showing up with a PNP entry. :-)

I admit that the thing came in "Plug'N'Run" (PNR) mode, where it was
hard-wired down by configuration software. I snipped a jumper on the
board, and now it's in PNP mode. ;-)

Take care,

Bill