1 May
2005
1 May
'05
11:51 p.m.
Hello Ethan,
I have 3 RK07 drives (two connected) and I have no READY "buttons"
with numbers higher than 3. So before you start a job on your 6
or 7, would you consider a trade? You get a 2 and a 3 (or whatever
you want), and I get the 6 and the 7. Instead of working with a
rasp to remove some plastic, you have to walk to the Post Office :~)
kind regards,
- Henk.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org]On Behalf Of Ethan Dicks
Sent: maandag 2 mei 2005 5:54
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: I made a zero (was Re: Stuff I want - all I want
is a "0")
On 5/1/05, vrs <vrs at msn.com> wrote:
OK, here's the followup on my attempt to make
an RL02 "0":
http://so-much-stuff.com/pdp8/zero.html
I think it turned out pretty well for a first attempt.
Nice job. I was recently going through a box of plastic bits (to put
away the handles I got from you, coincidentally), and found a 6 and a
7, from an RK07, no doubt (since the RL01/RL02 switches top out at
3)... IIRC, one can use them modulo 3 in an RL01/RL02 (i.e., these
would work as 2 and 3) if one doesn't happen to have a full load of
RK07s to populate with numbers.
My recollection of the old days was that 1s and 2s were harder to find
that 0s, but probably because we never misplaced our 0s... they were
right there on the system drives. Somewhere in some old DEC
reseller's warehouse there has to be an enormous box of numbers...
much like teeth in the fabled elephant's graveyard. 
2 May
2 May
12:38 a.m.
On 5/2/05, Gooijen H <GOOI at oce.nl> wrote:
Hello Ethan,
I have 3 RK07 drives (two connected) and I have no READY "buttons"
with numbers higher than 3. So before you start a job on your 6
or 7, would you consider a trade? You get a 2 and a 3 (or whatever
you want), and I get the 6 and the 7. Instead of working with a
rasp to remove some plastic, you have to walk to the Post Office :~)
I had no plans to modify my higher numbers. I was trying to suggest to
people that if they had access to higher numbers they could use them intact
in an RL01/RL02 and the drive itself would treat them as lower numbers
(there are 2 microswitches in the RL drives, 3 in the RK drives).
I would be willing to loan my numbers to Vince to copy (if he wants to try),
but since they are the only ones I have over 3 as well, I'd prefer not to
trade them away. I used to have a pair of RK07 drives and a score of packs,
but they didn't survive the closing of Software Results 12 years ago (I had
to leave them behind because they were too large to transport/store).
Someday, I hope to replace them, but it's not a huge priority (they are
easier to repair than more modern drives, but on a MB/volume/kWH curve, they
are hard to justify for heavy usage).
-ethan
7:09 a.m.
> http://so-much-stuff.com/pdp8/zero.html
>
> I think it turned out pretty well for a first attempt.
Thank-You for doing this!
Best thing to do to save time is to mass-produce an
all-legs-out button and just cut the right legs at the
last minute to get whatever number a person needs.
In some ID'ing systems this is either the first or last digit in
the series, on other systems this digit may be an
impossible hybrid that would always have to be cut first,
EG number 7 in 0..6.
Don't know if this has been suggested already, anyway
it has been now.
John A.
7174
days inactive
7174
days old
2 comments
3 participants
participants (3)
-
allain＠panix.com -
ethan.dicks＠gmail.com -
GOOI＠oce.nl