[Info-vax] Chinese Alpha?

[Bob Koehler]

In article <4fa418a7$0$283$14726298 at news.sunsite.dk>, =?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne at vajhoej.dk> writes:
> 
> I don't know how different or how similar VAX and PDP-11
> instruction set were.

   VAX and PDP-11 have lessons learned in common:  similar addressing
   modes, including autoincrement and autodecrement.  Similar data
   types, but VAX added G and H float.

   But PDP-11 uses a fixed length 16 bit instruction and VAX uses a
   variable length instruction, starting at one byte.  There is really
   little similarity in the actual instructions.