not sure this went out 11/45 status

[Tore S Bekkedal]

On Tue, 2005-03-01 at 10:26 -0600, Jay West wrote:

> 2) My front panel has an oddity (to me). If I select say address 10000 and
> hit load addr the address lights respond correctly with 10000. I then hit
> examine and get nothing (blank data lights). Whatever... but here's the
> interesting part. If I keep pressing examine over and over again, the
> address lights count up just like they should - except they skip bit zero
> (the rightmost bit, either 0 or 15 whatever dec nomenclature is). I don't
> mean that the rightmost bit just isn't displaying correctly, the actual
> counting sequence acts like the rightmost bit is the 2nd light from the
> right. I can tell it's not just a bulb problem because I don't have to hit
> load addr twice to "move on", the count is smooth and sequential without the
> rightmost bit. Any thoughts offhand?

(I'm not sure of this, yay, forth if I be mistaken, may the PDP-11
gurus, ye who lived and worked in the age wherein people talked thusly,
step forth and smite me with a hardware referance manual)

IIRC the PDP-11 is byte-addressed... It's counting up two bytes at a
time.

-- 
Tore S Bekkedal <toresbe at ifi.uio.no>