[cctalk] Re: Vintage Computer Fest Midwest "DECnut" pizza party

[Paul Koning via cctalk]

> On Sep 7, 2023, at 3:17 AM, Lars Brinkhoff <l...@nocrew.org> wrote:
> 
> Paul Koning wrote:
>> Even then it increments by 2, by special exception.  So 112700, 1
>> (movb #1,r0) fetches the instruction and increments PC by 2, then
>> fetches the word where the PC points and increments by 2, not 1,
>> again.
> 
> It's not really a special exception because immediate mode is @(R7)+.

(R7)+, actually; @(R7)+ is absolute.  I meant "special exception" because auto 
inc/dec of R6 and R7 always increments by 1, while for R0-R5 it increments by 
the datum size.

        paul