port to VAX 780

[Chris Torek]

In article <137 at stcvax.UUCP>, mes at stcvax.UUCP (Marjorie Smith) writes:
>We are porting 4.2 code from a VAX-11/750 to a VAX-11/780.
>What do we need to be aware of?

Normally, nothing at all.

>I understand that the UNIBUS adapter works differently on the 780.
>How does this affect drivers on the UNIBUS?

The common code in vaxuba/uba.c attempts to hide all the differences.
The only existing drivers that check the CPU type are the console
TU58 cassette driver (only 750s have console TU58 cassettes) and
the UDA50 driver, which depends on the CPU type mainly because the
generic code needs some work.

>Is this the only difference?

No, but again, most of the differences are thoroughly hidden.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
UUCP:	seismo!mimsy!chris	ARPA/CSNet:	chris at mimsy.umd.edu