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101090 discussions

OT: Female Computer RE: Contacting Jay West

by dave.g4ugm＠gmail.com

Here they were ... http://farm4.static.flickr.com/3311/3214242023_ca5f2425a2_o.jpg Dave > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of ben > Sent: 10 January 2017 06:50 > To: cctalk at classiccmp.org > Subject: Re: Contacting Jay West > > On 1/9/2017 3:13 PM, geneb wrote: > > On Mon, 9 Jan 2017, Rob Jarratt wrote: > > > >> > >> No HP-2000 problem, just wasn't HP-2000 sure if I had sent it to the > >> right place HP-2000. > >> > > "Meet single HP-2000 in your area!" > > > > g. > > > > Where are the Female Computers? > Hal

9 years, 1 month

pdp-11 assembly standards

by jnc＠mercury.lcs.mit.edu

> From: Phil Budne > I've always assumed the P in PAL was for paper tape. > The Wikipedia artile for PDP-8 says that PAL-8 assembled from paper > tape into memory, so the A and L could have been for Assembler and > Loader. I have a number of different versions of the "PDP-11 Paper Tape Software" manual, and the earliest one (DEC-11-GGPB-D, March '71) turns out to be for PAL-11A, and it says it stands for "Program Assembly Language for the PDP-11's Absolute Assembler" (pg. 3-1). Amusing factoid: the manual says it takes about 45 minutes to re-assemble PAL-11A from the source tape, and punch a new binary tape (this is using the HSRP). > ISTR PAL-11A was also an "absolute" assembler (did not output REL > files), but there was also a PAL-11R. Yup. PAL-11A took an input an ASCII tape with the program, and produced as output "an absolute binary tape" (pg. 3-23). A later version of the 'Paper Tape Software' manual (DEC-11-ASDB-D, May '71) covers PAL11-R (although it does not, alas, decribe the relocatable output format in detail - although I think it's documented elsewhere), and also Link-11 and Libr-11. PAL11-R require DOS. Noel

9 years, 1 month

pdp-11 assembly standards

by jnc＠mercury.lcs.mit.edu

> From: Paul Koning > Is that the Unix assembler convention? Yup. From "Unix Assembler Reference Manual" (by DMR; no date, but the one I'm looking at came with V6): "An octal constant consists of a sequence of digits ... A decimal constant consists of a sequence of digits terminated by a decimal point '.'." > It certainly isn't the one used by the GNU assemblers, which are modeled > after the old Unix syntax. Except when they gratuitously change things. Noel

9 years, 1 month

pdp-11 assembly standards

by jnc＠mercury.lcs.mit.edu

> From: Brent Hilpert >>>> One assembler doc uses a prefix of "&o" > So the answer is, by modern expectations the old standard would be > ambiguous or misleading. Well, the ideas of 'assembler' and 'standard' don't really go together in my mind... :-) But seriously, I don't know how many different PDP-11 assemblers there were, but the two _main_ ones (DEC's, and Unix's) both use the same numeric convention (although they differed in other ways, probably because of the CTSS/Multics erase character convention): a sequence of digits is an octal number, unless there's a trailing '.', in which case it's decimal. (Well, technically, DEC had PAL-11 and MACRO-11, but PAL-11 was basically a subset of MACRO-11, and used the same number syntax.) I've never heard of that '&o' bizzaro-stuff - where did you find that? Noel

9 years, 1 month

Contacting Jay West

by COURYHOUSE＠aol.com

In a message dated 1/9/2017 6:45:32 A.M. US Mountain Standard Time, pontus at Update.UU.SE writes: On Mon, Jan 09, 2017 at 01:31:28PM -0000, Rob Jarratt wrote: > I sent a private email to Jay West a few days ago but I have not had a > reply. He may be away or I may have the wrong address for him. What is the > best way to contact him? > A bit of patience I think. He seems quite busy sometimes. /P put hp-2000 in the title? <grin!>

9 years, 1 month

pdp-11 assembly standards

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff > What's the difference between PAL-11 and MACRO-11? Without going through the manuals at length, basically MACRO-11 supports macros, and PAL-11 doesn't. The syntax is otherwise very similar. > PALX is also the name for a cross assembler targeting PDP-11. I know it was used on ITS (although the PALX source had assembly options for all the main PDP-10 OS's, except TOPS-10), was that where it was written, do you happen to know? It's in MIDAS, so probably... Noel

9 years, 1 month

Yugoslavian Computer Magazine Cover Girls of the 1980s and 1990s

by lproven＠gmail.com

An image gallery of cheesy -- and cheese-cakey -- magazine covers from what were for me the golden days. But the UK mags weren't ever like this. Some of the names, and the typos, are highly amusing. http://imgur.com/gallery/3Jlqh -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

9 years, 1 month

pdp-11 assembly standards

by bhilpert＠shaw.ca

OK, what was the standard (if there was one) number-base syntax for PDP-11 assembler? Despite all the PDP-11 assembly info on web sites, this seems to be a buried bit of info. One assembler doc uses a prefix of "&o", another specifies octal as default and prefix of zero for decimal (opposite of the common C-derived standard . . great). Is this for example standard?: BIT #&o200, @#&o177564 ; test 2^7 bit at address octal 177564 (I'm just trying to make some written commentary consistent with common policy.)

9 years, 1 month

Stinky resistors was Re: Stinky screwdrivers

by chd＠chdickman.com

On Mon, Jan 9, 2017 at 3:30 PM, Ethan Dicks <ethan.dicks at gmail.com> wrote: > I have some Xcelite tools from the early 1980s. They have been stinky > for over 30 years. Same experience. I have some in a drawer on my work work-bench that were purchased in the early 80s and they still smell. > Definitely a butyrate stink (I used to > run chemistry shows at The Center of Science and Industry - one was on > Esters... we mixed a variety of alcohols with a variety of fatty acids > and let the audience smell the results... it was all fun and games > until I spilled 200ml of Butyric Acid on myself... :-P ) In high school chemistry we did some experiments with that stuff. I think the teacher just liked to stink up the school every year. Now I also have a bunch of drawers filled with Allen-Bradley carbon composition resistors from around 1970. All the leads have a whitish film on them that has a peculiar odor. They've been in the electrical lab at work, in an office environment since that time. I've always been a little curious about what caused it. -chuck

9 years, 1 month

Sunday brain tickler

by cclist＠sydex.com

I'm looking at a sample of what I see as a directory of sorts and am attempting to decode the file names from it. They're not anything as elegant as Rad50, but the encoding has escaped my weary brain. The system in question is a Lanier 103 word processor. Here are some samples. Can anyone come up with the encoding scheme? It can't be very complex as this was a comparatively brain-dead system: (All values in hex) c4 a3 75 6a ab 52 00 00 5c 25 15 1b 4c 40 00 00 cd 6d 15 7a a6 10 cb 82 a1 7a c1 c0 00 00 00 00 94 2f 38 40 00 00 00 00 d0 7f 9f 12 25 fd 53 28 The recurrence of these strings in what appears to be a block directory in the same position tell me that they must be file names. The file data itself is in ASCII, more or less (special formatting codes). The distribution of values to me suggests some sort of bit-packing algorithm is involved. Thanks for any suggestions. --Chuck

9 years, 1 month

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