test-drb December 1998

test-drb@ccmp.vtda.org

168 participants
844 discussions

by roblwill＠usaor.net

O.K. I think I'll try Minix, but where can I get it?? I can't seem to find it on the web anywhere (using WebCrawler). Does anyone have a copy that they could email, or a website to go to to download it? Happy Holidaze -and- ThAnX, -- -Jason Willgruber (roblwill(a)usaor.net) ICQ#: 1730318 <http://members.tripod.com/general_1> -----Original Message----- From: Allison J Parent <allisonp(a)world.std.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Sunday, December 20, 1998 2:23 PM Subject: Re: Linux or what? > >How about minix 2.0. It run on 8088 and fits in small disks. > >Likely the caldara openlinux can be trimmed of you eliminate the source >files. The problem is not fitting it on the disk but will you have useable >disk left? Finding a 40mb disk for that laptop would be a good idea. > >Allison > >

25 years, 7 months

Type 0665? This is 5.25" FH IBM HD, on topic. :)

by SUPRDAVE＠aol.com

my june94 ref guide suggests this is a 30meg hard drive for an IBM AT. FRU 8286216. not worth much, but fascinating to take apart! In a message dated 12/20/98 6:37:05 PM EST, jpero(a)pop.cgocable.net writes: << More info might help: Type 0665, 060386-ESP177-38 I have error table with 2 entries, cutout area is 20, and FPU # is 62X1017, 470 110127 30MB stuck to the front end metal plate. I had an old exact hd chassis design which had 4 platters without the extra circuit board that I have now that attaches upright to the mainboard at "front end" hidden behind metal plate. >>

25 years, 7 months

Need help on notebook

by mbg＠world.std.com

I don't know if this fits the 10-year-old rule (I doubt it), but my brother has an Epson ActionNote 4SLC2/50 and for Christmas I'd like to upgrade the measly 100+ Mb system disk he has with something a little larger (approx 300 Mb). I'm sure it probably has the 528 Mb limit, but that's okay, I don't have a disk that large (in 2.5" form factor) to give him. Anyway, I wanted to know if anyone has information on this notebook and can tell me if it can accept larger disks. Does it have the capability of SETUP and setting disk parameters (if the disk itself doesn't match one of the type 1-47 disks)? Rather than clutter the list with off-topic PC stuff, please respond to me directly. Thanks in advance for all the help... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+ My home_systems page has been massively updated... check it out.

25 years, 7 months

Linux or what?

by allisonp＠world.std.com

<My laptop's an 8088 with 640K RAM, CGA, 720k 3.5" floppy, and a 20 MB HD. <Obviously, not big enough. What I want to know is if I can get some old <version of it, or some "mini version", that still has the newer features, <just in a smaller package. Or does anyone have an alternative O/S that I <could run on it, besides DOS? How about minix 2.0. It run on 8088 and fits in small disks. Likely the caldara openlinux can be trimmed of you eliminate the source files. The problem is not fitting it on the disk but will you have useable disk left? Finding a 40mb disk for that laptop would be a good idea. Allison

25 years, 7 months

Neat time-wasters for DEC enthusiasts

by A_Finney＠wfi-inc.com

Ok, I may be a little slow and everyone else on the list has been to these pages... The first is about retro-computing on digital.com's main site: http://www.digital.com/info/DTJN02/DTJN02HM.HTM The second isn't so nicely packaged, it's just a loose set of documents that are (I assume) intended just for this facility. I personally found some interesting stuff by hunting through the trees, but then I am like an empty vessel when it comes to these systems. But neat documents, like the RSX-11M System Generation Guide... http://www-ols.fnal.gov/ols/documents/docpn.html If anyone hunting through the latter site finds anything of real interest, I'd love to hear about it... Aaron

25 years, 7 months

Electrical knowledge, was Another ~1960 computer kit

by kurtkilg＠geocities.com

On Sun, 20 Dec 1998 ddameron(a)earthlink.net wrote: > Another example, it surprises me how many "electrical" people do not > understand, for example, what happens when one wires speakers in series or > parallel. What _does_ happen? ---------------------------------------------------- Max Eskin | kurtkilgor(a)bigfoot.com | AOL: kurtkilgor

25 years, 7 months

Can I conclude......

by mbg＠world.std.com

Jon - Somewhere in my collection is a set of ASR-33 technical manuals (four in the set, if I remember correctly). I'll start searching to see if I can find them... On another note, I came across my pdp-8/i maintenance manuals (vol.1 and Vol.2) the other day... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

25 years, 7 months

Another ~1960 computer kit

by mbg＠world.std.com

ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: >; Tape player - a trivial music program for the P850 >; Written 1987 by A.R.Duell, and placed in the Public Domain. >; Reads a paper tape from the standard reader (a Trend HSR500interfaced >; to the PTR card). The tape contains pairs of bytes which define the >; pitch (in number of empty loops per half cycle) and duration (in number >; of cycles). This program produces sound by toggling the LSB of the >; Digital I/O (DIOC) unit >; As few other users know P850 assembler, I'll try and explain the >; instructions If I remember correctly, this is exactly how the hackers at Stanford got the DECsystem-10 to play music, but toggling the low-order bits of the AC (Bits 30-35) and driving a speaker. This gave them 6 'voices'. Someone developed a music compiler and there was a lot of music entered by various people... My favorite was 'Bumble Boogie'. About 15 or so years ago, a friend of mine wrote a compiler for the same music files in -11 macro, and I (knowing a little more music than he) entered a number of pieces. I entered some like Beethoven's Moonlight Sonata and Joplin's Crush Collision Rag. I wish I could find that compiler again... I still have LOTS of the music files. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg | +--------------------------------+-------------------------------------+

25 years, 7 months

Electrical knowledge, was Another ~1960 computer kit

by netcafe＠pirie.mtx.net.au

-----Original Message----- From: Tony Duell <ard(a)p850ug1.demon.co.uk> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Sunday, 20 December 1998 14:56 Subject: Re: Electrical knowledge, was Another ~1960 computer kit >Incidentally, in the days of valves, you could light a neon mains tester >by holding it near (not touching) the line output valve (sweep tube?). A >very quick test for EHT problems. A screwdriver (insulated handle!) blade touched to the top cap of the 1S2 would produce a healthy arc when held somewhere near chassis if the line/eht stage was running. This practice did not survive the transition to solid state devices that disliked the spikes etc it could cause! >> Another example, it surprises me how many "electrical" people do not >> understand, for example, what happens when one wires speakers in series or >> parallel. Several non-electrically minded customers of mine now have 1st hand knowledge of the effects of this. 1 particular Guy had no less than 8 speakers wired in a series/parallel MESS (whether a speaker was series or parallel was determined by it's physical location in relation to the audio leads he had running all over the house) Actual impedance was around 1 ohm on the left channel and about 2 on the right. Result: 1 very dead STK chip output amp. Amazingly, it actually worked for about an hour before expiring. Seems he had done something similar in the past (old fella) with valve based stuff, and aside >from a little(?) distortion it worked. I guess that proves that valves have their advantages. I suspect the Speaker Transformer on the valve amp could have been used to boil water though. Cheers Geoff Roberts Computer Room Internet Cafe Port Pirie South Australia. netcafe(a)pirie.mtx.net.au

25 years, 7 months

Electrical knowledge, was Another ~1960 computer kit

by ddameron＠earthlink.net

At 12:18 PM 12/20/98 -0500, you wrote: >On Sun, 20 Dec 1998 ddameron(a)earthlink.net wrote: >> Another example, it surprises me how many "electrical" people do not >> understand, for example, what happens when one wires speakers in series or >> parallel. > >What _does_ happen? Power is divided to the speakers, as a function of power formula's for series/parallel circuits. The amplifier also has a resultant load. These considerations can be important for the amp ratings, as well as the speaker ratings and sound level matching. -Dave

25 years, 7 months

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test-drb December 1998