test-drb

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101090 discussions

by g-wright＠att.net

I have put up my Xerox Star Disk Images here. Now,? does anyone have the service manualsthat? are complete. seems what I have in missing most of the latter part.? Will be up for a few days. Jerry https://dl.dropboxusercontent.com/u/104392233/XEROX_Star_SW.zip

10 years

Need Rec: Book to teach about computers and BASIC at an eight year old level

by cctalk＠ibm51xx.net

So somewhat OT - I've setup an 8 year old w/ an IBM PC XT w/ CGA. To say he is less than impressed is understating things :). However, I am determined that he will learn basic computer terminology, architecture, history (i.e. how we got here) and at least get his feet wet with programming by learning BASIC this summer. Apparently teaching is not my strong suite - while I can talk about a larger number of the above topics, especially at his level, organizing them in a way to make sense is the problem. I was wondering if anyone could recommend a good book that gets the basic stuff out of the way (what is the CPU, memory, storage, etc. what are different the parts called, etc.) and maybe another one that teaches an intro to BASIC written for a very young reader? It would be nice if the book is in the PD or at least available as a PDF that way he can read it on his Kindle. However, I am not averse to buying a physical new (or used book) either. Thanks. -Ali

10 years

Deth Specula and SCO

by dave＠661.org

Once upon a time there was a band made up mostly of SCO employees called "Deth Specula". Their heyday was in the early to mid 1990s. Does anyone remember them? -- David Griffith dave at 661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

10 years

Resurrecting the DB-19

by COURYHOUSE＠aol.com

funny.... we used to end up with cables with these things on them and .... hope they got saved in one of the aux buildings...ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 6/5/2016 9:33:45 P.M. US Mountain Standard Time, nf6x at nf6x.net writes: > On Jun 5, 2016, at 14:02, Alexandre Souza <alexandre.tabajara at gmail.com> wrote: > > http://tabajara-labs.blogspot.com.br/2015/05/fazendo-o-expletiva-cabo-da-du… > > Better than nothing :) Nice hack! Too bad that Noy guy defaced his computer. :D -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

10 years

Heathkit ETA-3400 vs. ETW-3400 confusion?

by drlegendre＠gmail.com

Which is the correct model number for the I/O & memory accessory for the Heath ET-3400(A) trainers? I see ETA-3400 and ETW-3400 used interchangeably. For instance, the d/l manuals refer to the unit as ETA-3400 but many (most?) units, mine included, are screened ETW-3400 on the case. Anyone know what gives with this? Are there actually two different models or revisions, as with the ET-3400 and ET-3400A? Also, is there a way to tell if a Heath piece is factory-built? My recently-acquired ETW/A-3400 has a board which almost +must+ have been wave soldered and washed. It has no traces of home-assembly. Likewise, the rest of the build is top-notch and looks like factory work.. Thoughts? PS Still need a 2x20 header (like 40pin IDE) to complete this project. Anybody got a spare?

10 years

Resurrecting the DB-19

by cctalk＠ibm51xx.net

Sweet. No where can I order 10 or so at a reasonable price? There is a guy one ebay selling one with hood at $22 a piece.... -------- Original message -------- From: Liam Proven <lproven at gmail.com> Date: 6/5/2016 1:55 AM (GMT-08:00) To: "Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Resurrecting the DB-19 June 4, 2016 ? 10 comments *DB-19: Resurrecting an Obsolete Connector* Oh man, this is good! You?re looking at the first DB-19 connector to be made in the 21st century... http://www.bigmessowires.com/2016/06/04/db-19-resurrecting-an-obsolete-conn… -- Sent from my phone - please pardon brevity & typos.

10 years

PDP-12 Restoration at the RICM

by michael.99.thompson＠gmail.com

We fixed the RK05 disk this week. We replaced E3 (LM301A) and E1 (SN7404) on the G938 Servo Preamp module. The COUNT PULSE FWD H and the COUNT PULSE REV H signals from the G938 module are both working now. The drive will now seek correctly using the jumpers described in the Maintenance Manual or using seek-only instructions from the RK8-F controller. We tried the OS/8 and LAPS-DIAL bootstraps, but the processor just halted. The first page of core that was read from the pack contained a repeating sequence of 2525-5252. Either the pack was used as a data-only pack, or diagnostics were run on the pack. During the week I will use SIMH to make a PDP-12 bootable OS/8 RK05 image. Next week we will use dumprest to make an image of the disk pack, and then write OS/8 to the pack. -- Michael Thompson

10 years

Model M Key Cap Replacement

by COURYHOUSE＠aol.com

my real IBM clicky keyboard does not have usb so I tried various usb adapters and they could be flaky,... you would have to start computer then have to unplug and reinsert keyboard connection etc... anyone have a solve for this? thanks Ed# In a message dated 6/5/2016 9:51:17 A.M. US Mountain Standard Time, COURYHOUSE at aol.com writes: my real IBM clicky keyboard does not have usb so I tried various usb adapters and they could be flaky,... you would have to start computer then have to unplug and reinsert keyboard connection etc... anyone have a solve for this? thanks Ed#

10 years

Model M Key Cap Replacement

by COURYHOUSE＠aol.com

Chuck! That would be great! Perhaps yours had newer brains in it than my couple as mine have some years on them. if you still have link to vendor that would be good too. My clicky keyboard is off the tower so it has a long cable on it! I love this keyboard! In a message dated 6/5/2016 11:57:36 A.M. US Mountain Standard Time, cclist at sydex.com writes: On 06/05/2016 10:09 AM, COURYHOUSE at aol.com wrote: > > my real IBM clicky keyboard does not have usb so I tried various > usb adapters and they could be flaky,... you would have to start > computer then have to unplug and reinsert keyboard connection > etc... > > anyone have a solve for this? thanks Ed# I use a no-name cheapie keyboar+mouse adapter that looks like a "y" cable more than anything. Works fine on USB for both. I think I paid about $2 shipped from China. I can get the chip ID if you'd like, but that assumes that you can find another like it. --Chuck

10 years

U320 Drives Show up on Wrong Target ID?

by alexmcwhirter＠triadic.us

So in short i have six identical drives. Same manufacture, model, and firmware. Three of them work fine, the other three also work fine but they always show up as the wrong target. For example i have a Sun D1000 storage array with 12 slots (targets 0-11). It doesn't matter what slot you put them in, these three drives always have the same target number. One is target 8, on target 4, one target 2. I doesn't matter one of the drives is by itself or together with other drives. Take the disk that always shows up as target two for example. If you place this drive in slot zero, then place a normal working drive in slot 2, and finally attempt to write data to target 2 both drives will get the write. The same effect also applies to reads. If you boot an OS with the drives in this configuration you will usually get a panic. I can verify the same behavior on my Sum V210 and Dell PE 2850. This is such a bizarre way for a disk to act / fail. Has anyone ever seen this before?

10 years

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