[LV] State of the VAX nation

[Maciej W. Rozycki]

On Tue, 14 Aug 2007, Jan-Benedict Glaw wrote:

> Yeah... The current one is even quite hard-coded to support *exactly*
> four lines.  I'm not all that sure, but I seem to remember to have
> some QBus board around that has 2x dz11 on them (for eight lines
> total) and these seem to be not too rare. Maybe I'll have a look at
> those in a far future.

 Oh, the original DZ11 was eight lines -- four-line implementations like 
the DC7085 can be considered crippled -- but even without having a look at 
the DZ11 spec you can still see from the bit patterns in the registers how 
eight lines would fit.  While the wiring of modem lines in some 
implementations may seem to contradict, in fact it does not, as from the 
DZ11's point of view thay are just a bunch of GPIOs and beside being 
readable or writable through the interface, they do not affect the 
operation of serial ports in any way.

 I will be happy to accept clean changes to support 8-line configurations, 
but it does not make too much sense to implement it before the code is 
converted to the driver model.

> While being at this... There's a shitload of new syscalls that need to
> be wired up. Another starter's project (maybe except the 64bit
> syscalls, for which they'd have a look at other 32bit ports.)

 I think there is a script that checks for such stuff somewhere these 
days.  Some syscalls may actually be required by such a half-decent glibc 
as 2.4, so I will check it when doing the port and thanks for the 
heads-up.

  Maciej
_______________________________________________
Linux-Vax mailing list
Linux-Vax at pergamentum.com
http://www.pergamentum.com/mailman/listinfo/linux-vax