Blinking Light program for PDP-11

From: Ashley Carder <wacarder_at_usit.net>
Date: Thu Dec 2 13:47:54 2004

>
> Hi Ashley,
>
> Good enough.
>
> FWIW, Guy's program decodes to the following:
>
> 001000 005000 CLR R0
> 001002 005200 1: INC R0
> 001004 006100 ROL R0
> 001006 000005 RESET
> 001010 000775 JMP 1B
>
> The instruction of interest is the RESET, which sends an INIT to
> the UNIBUS for 10ms. It must also have the effect of displaying
> the contents of R0 in the DATA display, or perhaps whatever register
> was last referenced. I figured that there was an instruction which
> would behave in this manor, but did not recall what it was...
>
> --tom

Tom,

Thanks for decoding it. I had planned to pull out my 11/40 handbook
and do that as well, but haven't gotten around to it. After getting the
machine running smoothly and booting several various bootable packs,
I decided to take the rest of the night off.

Ashley
Received on Thu Dec 02 2004 - 13:47:54 GMT