General Electric EF-140

I hope this is considered apporopriate for this list, if not, I am sure y'all will let me know. :-) And, yes, it is about a truly classic computer. I am trying to restore my 1961 General Electric EF-140 Analog Computer. The insulation on all of the wires has basicly turned to stick goo. I wo

RE: RL02 version of UNIX6?

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Paul Koning [paulkon...@comcast.net] Sent: Thursday, February 2, 2017 9:34 AM To: General Discussion: On-Topic and Off-Topic Posts Cc: j...@mercury.lcs.mit.edu Subject: Re: RL02 version of UNIX6? > On Feb 1, 2017, at 9:30 PM, Noel Chiappa

Macintosh Floppy

Anybody interested in a Sony MP-F75W-21G? I have one to dispose of as I got rid of all my Mac stuff a long time ago. Make an offer. bill

RE: need (physical) key for Sun SPARCserver 1000e

Got a picture of it? I found that old PS/2 keys work in PDP-11 and VAX boxes, might work in the SparcServer, too. (I don't remember any of the Sparcs att he Univerisity having keys but they were old and maybe Sun came up with a reason to add one.) bill

RE: need (physical) key for Sun SPARCserver 1000e

Or, you could just open up the box and replace the switch with one that doesn't require a key. bill From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Mark G Thomas [m...@misty.com] Sent: Thursday, February 9, 2017 3:06 PM To: General Discussion: O

RE: RSTS V7 magtape images on bitsavers

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Noel Chiappa [j...@mercury.lcs.mit.edu] Sent: Saturday, February 11, 2017 10:08 AM To: cctalk@classiccmp.org Cc: j...@mercury.lcs.mit.edu Subject: Re: RSTS V7 magtape images on bitsavers > From

RE: RSTS V7 magtape images on bitsavers

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of j...@cimmeri.com [j...@cimmeri.com] Sent: Saturday, February 11, 2017 10:51 AM To: gene...@classiccmp.org; Discussion@ Subject: Re: RSTS V7 magtape images on bitsavers On 2/11/2017 10:48 AM, Bill

RE: Changing wire-wrap configurations on DEC circuit boards

From: cctech [cctech-boun...@classiccmp.org] on behalf of Earl Evans [e...@retrobits.com] Sent: Monday, February 13, 2017 6:45 PM To: General Discussion: On-Topic Posts Only Subject: Changing wire-wrap configurations on DEC circuit boards Hi there, I've

RE: Changing wire-wrap configurations on DEC circuit boards

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Noel Chiappa [j...@mercury.lcs.mit.edu] Sent: Tuesday, February 14, 2017 7:32 AM To: cctalk@classiccmp.org Cc: j...@mercury.lcs.mit.edu Subject: Re: Changing wire-wrap configurations on DEC circuit

RE: Yale renames Calhoun College for Grace Hopper

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Chuck Guzis [ccl...@sydex.com] Sent: Tuesday, February 14, 2017 11:12 AM To: CCtalk Subject: Yale renames Calhoun College for Grace Hopper Grace Hopper (if you've ever followed CODASYL or the COBOL

RE: New batch of pdp8 OMNIBUS to USB interface! Please Read and react!

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of W2HX [w...@w2hx.com] Sent: Tuesday, February 14, 2017 4:19 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: New batch of pdp8 OMNIBUS to USB interface! Please Read and react! Tha

RE: Ted Kaczynski was RIGHT!

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Mike Stein [mhs.st...@gmail.com] Sent: Wednesday, February 15, 2017 1:14 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Ted Kaczynski was RIGHT! I also attended one of her lec

RE: confirm e3191f334ef584df40dccf9737f54f4dcd016a5d

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of cctalk-requ...@classiccmp.org [cctalk-requ...@classiccmp.org] Sent: Wednesday, February 15, 2017 9:31 AM To: bill.gunshan...@hotmail.com Subject: confirm e3191f334ef584df40dccf9737f54f4dcd016a5d __

Old DEC Documentation

Anybody interested in a copy of: Communications Options Minireference Manual (EK-CMINI-RM-001) USPS Flat Rate would be under $15.00 Throw in a couple more fo the trouble of taking to the PO and it's yours. bill

DEC Documentation

Lower that postage estimate. It fits in a padded envelope. bill

RE: confirm e3191f334ef584df40dccf9737f54f4dcd016a5d

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Adrian Stoness [tdk.kni...@gmail.com] Sent: Thursday, February 16, 2017 4:48 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: confirm e3191f334ef584df40dccf9737f54f4dcd016a5d Ar

RE: IBM Series/1 listed on UK Ebay

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of jim stephens [jwsm...@jwsss.com] Sent: Wednesday, February 22, 2017 10:33 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: IBM Series/1 listed on UK Ebay On 2/22/2017 3:47 AM, d

RE: IBM Series/1 listed on UK Ebay

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Mark Linimon [lini...@lonesome.com] Sent: Wednesday, February 22, 2017 11:45 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: IBM Series/1 listed on UK Ebay On Wed, Feb 22, 2017

RE: Q Bus Music Board

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Noel Chiappa [j...@mercury.lcs.mit.edu] Sent: Wednesday, February 22, 2017 1:49 PM To: cctalk@classiccmp.org Cc: j...@mercury.lcs.mit.edu Subject: Re: Q Bus Music Board > From: Jim Stephens

RE: Q Bus Music Board

:24PM +, Bill Gunshannon wrote: > I think IO have a couple of them but I never heard them play music. :-) A couple of A6006 or a couple of Q Bus Music Boards? (I'm guessing A6006, I think that even I have D/A boards lying around) __ Don't

RE: story of Mel

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Fred Cisin [ci...@xenosoft.com] Sent: Thursday, February 23, 2017 3:02 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: story of Mel I love the wisdom of Allison's remark, that

RE: story of Mel

From: cctech [cctech-boun...@classiccmp.org] on behalf of allison [ajp...@verizon.net] Sent: Thursday, February 23, 2017 11:04 AM To: cct...@classiccmp.org Subject: Re: story of Mel On 2/23/17 3:23 AM, Pontus Pihlgren wrote: > On Wed, Feb 22, 2017 at 02:1

Re: Siemens T100 Terminal with Paper Tape - Available

On 12/8/21 6:21 PM, Curious Marc via cctalk wrote: Dominique, Nice to see your machine working so well! I like how it lights up from the inside. To connect it to a computer, you could simply get a Volpe board that does the Baudot 60 mA loop to ASCII RS 232 conversion for you, or build one your

Re: tamayatech let down

On 12/20/21 9:32 PM, Jacob Ritorto via cctalk wrote: Interestingly their SEO is rather well maintained and punching DEC part numbers into Google, etc. often results in a hit to their site. So they're at least keeping that part of the business updated. That shouldn't be taken as meaning anyth

Re: VAX 780 on eBay

On 1/1/22 1:40 PM, Paul Koning via cctalk wrote: On Jan 1, 2022, at 1:12 PM, Noel Chiappa via cctalk wrote: This: https://www.ebay.com/itm/275084268137 The starting price is expensive, but probably not utterly unreasonable, given that: - the 780 was the first VAX, and thus historical

Re: VAX 780 on eBay

On 1/1/22 1:53 PM, Grant Taylor via cctalk wrote: On 1/1/22 11:46 AM, Bill Gunshannon via cctalk wrote: Having 240 in your house does not necessarily mean you have 240 outlets anywhere and not everyone is capable of doing their own house wiring. There may even be 240 V outlets but not

Re: VAX 780 on eBay

On 1/3/22 11:50 AM, Ethan Dicks via cctalk wrote: On Mon, Jan 3, 2022 at 12:18 AM Warner Losh via cctalk wrote: I had accounts on a MicroVAX 2 and a VAX 11/750. The microvax was faster for most compute jobs, but the 750 with 1/4 the memory handled more users mostly in text editors with the occa

Re: ISO: Canon Scanner Driver

On 1/30/22 15:02, Jason T via cctalk wrote: In order to further the effort of scanning and preserving ALL of the things, I picked up a Canon Microfilm Scanner 300 for $cheap. It has a SCSI interface and doesn't work with anything past Windows XP, but that's not a problem. What is a problem is t

Re: ISO: Canon Scanner Driver

On 1/30/22 22:21, Jason T via cctalk wrote: On Sun, Jan 30, 2022 at 3:42 PM Glen Slick via cctalk wrote: Just manually edit that URL with the desired filename: https://downloads.canon.com/cpr/software/scanners/300350DRIT_V11.exe That's it! I didn't think to substitute the filename I was aft

Re: Origin of "partition" in storage devices

On 1/31/22 20:13, Fred Cisin via cctalk wrote: On Mon, 31 Jan 2022, Paul Koning via cctalk wrote: Yes, RT-11 is a somewhat unusual file system in that it doesn't just support contiguous files -- it supports ONLY contiguous files.  That makes for a very small and very fast file system. The onl

Re: VAX9000 unearthed

On 2/18/22 13:30, Josh Dersch via cctalk wrote: On Fri, Feb 18, 2022 at 6:55 AM Paul Koning via cctalk < cctalk@classiccmp.org> wrote: Speaking of vector processors: there's a very obscure DEC processor, the DEC MPP. I remember seeing the processor architecture document when it was being d

Re: VAX9000 unearthed

On 2/20/22 15:31, Chuck Guzis via cctalk wrote: On 2/20/22 10:10, Mark Kahrs via cctalk wrote: I heard Butler Lampson once exclaim that ECL design was in some ways easier than TTL. If you terminated every line, you get controlled impedances with controlled edges. This was the design philosophy

Re: Installing an operating system on an 11/83

On 2/21/22 21:14, Jay Jaeger via cctalk wrote: On 2/21/2022 6:55 PM, Glen Slick via cctalk wrote: On Mon, Feb 21, 2022, 4:32 PM Rod Smallwood via cctalk < cctalk@classiccmp.org> wrote: Hi     I have built an 11/83 in a BA23 box.     It has a KDJ-11B, 2mB PMI memory, an RQDX3 with an RX50 att

Re: Installing an operating system on an 11/83

On 2/21/22 22:27, Fred Cisin via cctalk wrote: On Mon, 21 Feb 2022, Chris Zach via cctalk wrote: I think installing 30 floppy disks would be an exercise in insanity: No arguments there. That would probably wear down an RX50 drive to the nubbins. Are RX50 drives less robust than what was us

Re: PMI memory on an -11/93 (Was: Installing an operating system on an 11/83)

On 2/22/22 12:55, Noel Chiappa via cctalk wrote: > From: Bill Gunshannon > Just wish I could get some PMI memory for that 93. ?? The KDJ11-E in the -11/93 comes with a minimum of 2MB on the CPU card. That's enough for almost 16 maximum-sized processes (assuming they are

Re: PMI memory on an -11/93 (Was: Installing an operating system on an 11/83)

On 2/22/22 16:09, Henk Gooijen via cctalk wrote: I always thought that you cannot add (PMI) memory to an 11/93. There are two versions of the 11/93. One with 2 MB, the other with 4 MB of memory _on board_. And that’s it. If you have an 11/93 CPU with 2 MB on board, the board is just half popula

Re: PMI memory on an -11/93 (Was: Installing an operating system on an 11/83)

On 2/22/22 16:15, Bill Gunshannon via cctalk wrote: On 2/22/22 16:09, Henk Gooijen via cctalk wrote: I always thought that you cannot add (PMI) memory to an 11/93. There are two versions of the 11/93. One with 2 MB, the other with 4 MB of memory _on board_.   And that’s it. If you have an 11/93

Re: Installing an operating system on the 11/83 - update.

On 2/22/22 20:08, Paul Koning via cctalk wrote: On Feb 22, 2022, at 7:33 PM, Fred Cisin via cctalk wrote: From the FDC point of view, which doesn't have optical view of the drive and media, the 80 track DD 5.25" looks similar to a "720K 3.5" drive. (80 tracks, 9 sectors per track, 300 RPM

Tandon TM 848-02

Does anyone have anything on the jumper settings for this drive? I would like to jumper it so it can read DEC RX01/RX02 floppies. I am looking at being able to read disks on a non-DEC systems but I would also like to be able to use it on my Andromeda card in a real PDP-11. bill

Re: Tandon TM 848-02

On 2/24/22 01:09, Mike Stein wrote: P 1-17 of the Service Manual What manual? I understand the one on bitsavers is for the 848 and not the 848-02 which has a completely different logic board. Have I been misinformed? bill

Re: Tandon TM 848-02

On 2/24/22 07:51, Adrian Graham via cctalk wrote: On 24 Feb 2022, at 12:21, Bill Gunshannon via cctalk wrote: On 2/24/22 01:09, Mike Stein wrote: P 1-17 of the Service Manual What manual? I understand the one on bitsavers is for the 848 and not the 848-02 which has a completely

Re: HP 9915A failed 8048

On 2/26/22 12:15, js--- via cctalk wrote: On 2/25/2022 5:09 PM, Will Cooke via cctalk wrote: On 02/25/2022 2:23 PM Paul Berger via cctalk wrote: The 8048 is a mask programmed part, there is an EPROM version 8748. While the 8048 is mask programmed I believe that the contents of the ROM can

Re: DEC top-mount corporate cabinet

On 2/28/22 14:07, Chris Elmquist via cctalk wrote: On Saturday (02/26/2022 at 03:21PM -0500), pbirkel--- via cctalk wrote: A top-mount corporate cabinet looks like this: http://www.cosam.org/images/pdp11-23/front2.jpg The "DECDatasystem" front-bar in the photo is over the 1U strengthener that b

Re: DEC top-mount corporate cabinet

On 2/28/22 14:47, Bill Gunshannon via cctalk wrote: On 2/28/22 14:07, Chris Elmquist via cctalk wrote: On Saturday (02/26/2022 at 03:21PM -0500), pbirkel--- via cctalk wrote: A top-mount corporate cabinet looks like this: http://www.cosam.org/images/pdp11-23/front2.jpg  The "DECDatas

Re: While on the subject of cabinets...

On 3/2/22 12:46, Paul Koning via cctalk wrote: On Mar 2, 2022, at 11:45 AM, Chris Elmquist via cctalk wrote: On Tuesday (03/01/2022 at 04:36PM -0800), Marc Howard via cctech wrote: I've got a PDP 11/34 I've never opened up. It's mounted in a H9642 cabinet. I can't get the bloody thing to

Re: Looking for computer and individual to read old floppy disks

On 3/11/22 20:39, Fred Cisin via cctalk wrote: On Fri, 11 Mar 2022, Chuck Guzis via cctalk wrote: I could do it, but I'm a little squeezed for time and energy right now. Spending my mornings under the LINAC. Yikes! The word "under" means that you are not doing atomic physics experiments. Very

Re: gcobol

On 3/14/22 20:53, Paul Koning via cctalk wrote: Saw a note on the GCC list that I thought some here might find interesting: it announces the existence (not quite done but getting there) of a COBOL language front end for GCC. Interesting. For those who deal in legacy COBOL applications that w

Re: gcobol

On 3/15/22 09:12, Paul Koning wrote: On Mar 14, 2022, at 9:05 PM, Bill Gunshannon via cctalk wrote: On 3/14/22 20:53, Paul Koning via cctalk wrote: Saw a note on the GCC list that I thought some here might find interesting: it announces the existence (not quite done but getting there) of

Re: gcobol

On 3/15/22 12:57, Paul Koning wrote: On Mar 15, 2022, at 12:39 PM, Bill Gunshannon via cctalk wrote: On 3/15/22 09:12, Paul Koning wrote: On Mar 14, 2022, at 9:05 PM, Bill Gunshannon via cctalk wrote: On 3/14/22 20:53, Paul Koning via cctalk wrote: Saw a note on the GCC list that I

Re: gcobol

On 3/15/22 13:31, Paul Koning wrote: On Mar 15, 2022, at 1:18 PM, Bill Gunshannon via cctalk wrote: On 3/15/22 12:57, Paul Koning wrote: ... One difference is that GDB will be able to do COBOL mode debugging. Never had a reason to try it but I thought GnuCOBOL allowed the use of GDB

Re: Does anyone/museum test disk packs?

On 3/17/22 09:33, Chris Zach via cctalk wrote: Modern disks still have a filtration system and airflow within the disk. Air usually gets sucked from the edge then through the spindle and out the center. In this case I think the spinning created a lower pressure area where the heads were, result

Re: PDP 11/24 - A Step Backwards

On 3/27/22 05:17, Tony Duell via cctalk wrote: On Sat, Mar 26, 2022 at 11:12 PM Rob Jarratt via cctalk wrote: Unfortunately, or fortunately, depending on how you look at it, the PSU repair is under warranty, which means I can't do it myself without invalidating the warranty, so I will have t

FreHD

Here's one for the memory banks. I have a number of TRS-80's. Back when they first came out I bought a couple of the FreHD Hard Disk Emulators made by Fred Vecoven. They worked great and made life a lot easier. Then, I had reason to put everything away for a long rest. I just pulled them out

Re: PDP 11/24 - A Step Backwards

On 3/27/22 14:48, Chris Zach via cctalk wrote: Bigger question is who repaired the power supply "under warranty"? My guess would be whoever fixed it this last time and warranted it. bill

Re: Glass memory?

On 4/1/22 16:17, Mike Stein via cctalk wrote: Hey, I've got one of those somewhere (the delay line, not the terminal ;-) )! I do still use the cabinet as a desk, as well as a few parts here and there; to think that today something like an Arduino nano can replace that desk-sized cabinet containi

TRS-80 Question

Here's one for whatever TRS-80 gurus still hang out. The Mode 4 had 64K RAM and pretended to be a Model III by loading an image of the Model III Rom and then running it. Would it be at all possible to do the same thing with an image from the Model I and thus make a Model 4 capable of running M

Re: TRS-80 Question

On 4/11/22 14:09, Eric Dittman via cctalk wrote: On 4/11/22 11:56 AM, Bill Gunshannon via cctalk wrote: Here's one for whatever TRS-80 gurus still hang out. The Mode 4 had 64K RAM and pretended to be a Model III by loading an image of the Model III Rom and then running it.  Would it be a

Re: TRS-80 Question

On 4/11/22 22:37, Eric Dittman via cctalk wrote: On 4/11/22 1:33 PM, Bill Gunshannon via cctalk wrote: On 4/11/22 14:09, Eric Dittman via cctalk wrote: On 4/11/22 11:56 AM, Bill Gunshannon via cctalk wrote: Here's one for whatever TRS-80 gurus still hang out. The Mode 4 had 64K RA

Re: TRS-80 Question

On 4/12/22 11:49, Peter Cetinski via cctalk wrote: On 4/12/22 6:37 AM, Bill Gunshannon via cctalk wrote: So, this just gets more and more confusing. (Have I really been away from all this for that long!!!) I dug up the tech manuals for the two of them (buried deep in my stacks of books) and

Re: PCI floppy controller

As another person with a desire to be able to read/write/create disks of different sizes and formats I have found this interesting. So the question, then How hard would it be to make a floppy disk interface using an Arduino or even RasberryPi? If you could do that the choices of interface

Re: PCI floppy controller

On 4/22/22 21:19, Warner Losh wrote: On Fri, Apr 22, 2022 at 7:07 PM Bill Gunshannon via cctalk mailto:cctalk@classiccmp.org>> wrote: As another person with a desire to be able to read/write/create disks of different sizes and formats I have found this interesting.

Re: PCI floppy controller

On 4/22/22 21:48, Fred Cisin via cctalk wrote: On Fri, 22 Apr 2022, Bill Gunshannon via cctalk wrote: As another person with a desire to be able to read/write/create disks of different sizes and formats I have found this interesting. So the question, then How hard would it be to make a

Yet another TRS-80 question

Has anyone ever seen a TRSDOS equivalent of the CP/M LOAD command? I have the PL/M-80 compiler running but it's output is an Intel HEX File. Works great for CP/M but I would really like to try some programs under TRSDOS. The only other option at this point would be to dis-assemble the HEX File

cleaning up edge connectors

I am hoping to restore my TRS-80 Model-I(s). As is usually the case with these the edge connectors are badly corroded and dirty and cleaning them with an eraser really doesn't help much. Back in the day there used to be something you could get that let you "gold plate" the edge connectors. Is

Re: cleaning up edge connectors

On 4/28/22 16:32, Chuck Guzis via cctalk wrote: On 4/28/22 12:47, Bill Gunshannon via cctalk wrote: I am hoping to restore my TRS-80 Model-I(s).  As is usually the case with these the edge connectors are badly corroded and dirty and cleaning them with an eraser really doesn't help much. 

Re: cleaning up edge connectors

On 4/28/22 18:33, Jonathan Chapman wrote: If there's bad/deep corrosion, I hit it with the ink eraser (I have a bunch of Eberhard-Faber ones that look like a wooden pencil, you sharpen them like a pencil too). If that won't touch it, I use the stainless steel toothbrush. Corey Cohen has some p

Re: cleaning up edge connectors

On 4/28/22 18:02, Mike Katz wrote: I use DeOxit Gold to clean my PDP-8 boards edge conectors: I have DeOxit but I saw that as a very short term solution (no pun intended :-)). I think I will try my idea of using solder with a little silver in it if I can find some suitable. bill

The TRS-80 Journey Continues

Utterly amazed at how much I have forgotten. Even more amazed at how much information seems to have been lost since the days of the TRS-80. So, I am no trying to get CP/M going again. I have been able to get floppy systems working but can not find any information on how to build hard disk sys

Re: The TRS-80 Journey Continues

On 5/4/22 14:35, Bill Degnan wrote: Bill, I searched for "montezuma 2.2 hard drive install" on Google: https://oldcomputers.dyndns.org/public/pub/manuals/montezuma_micro_hard_disk_support_for_cpm_2-2.pdf I have been through the process a few times, it's pretty straight-forward if you use these

Re: The TRS-80 Journey Continues

On 5/4/22 15:10, Bill Degnan wrote: Bill, Sorry, I understand now. Assuming you have the confirmed ability to make a disk from DSK image you found a corrupted DSK file. Gotcha. I am kind of busy at the moment, but I do have the disk you need, the actual disk. If you find no other source I cou

Re: The TRS-80 Journey Continues

My thanks for all the help. I now have CP/M 2.2 booting and running from a hard disk on a TRS-80 Model 4P, Now back to my PL/M. bill

Re: The TRS-80 Journey Continues

Next step... Apparently mu original Tandon floppy has bought the farm. Does anyone know what the jumper setting are for a TEAC FD-55GFR-149 for the TRS-80 4P? I tried the usual (like for a DEC RX-33) but that didn't fly. Every sector fails verify after a format. I am sure it's a jumper thin

Re: The TRS-80 Journey Continues

On 5/5/22 13:34, Mike Loewen via cctalk wrote: On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote: Next step... Apparently mu original Tandon floppy has bought the farm. Does anyone know what the jumper setting are for a TEAC FD-55GFR-149 for the TRS-80 4P? I tried the usual (like for a

Re: The TRS-80 Journey Continues

was in your 4P? On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote: I know it wasn't.  The original was a Tandon 50.  But the TEAC FD-55GFR (in various flavors) was used in a lot of systems and at least one website said they were used in the 4P.  It is an extremely configurable drive

Re: The TRS-80 Journey Continues

On 5/5/22 16:50, Mike Katz via cctalk wrote: If you use a 80 track (96 TPI) 5 1/4" drive to read 40 track (48 PTI) floppies that will work but if you write onto them they will not be readable in a 40 track drive any more.   The reason for this is that the had is half the width and when the 80 t

Re: The TRS-80 Journey Continues

On 5/5/22 17:12, Fred Cisin via cctalk wrote: Double sided drives in 4P shouldn't require anything more than software patches, to tell the OS (TRS-DOS, CP/M, etc.) that you have and want to use the other side. The Model 3 and 4 disk controller (did the 4P use the same one??) supports double s

Re: The TRS-80 Journey Continues

I had forgotten just how much fun the TRS-80's could be. At least for the moment I am giving up on trying to get a TEAC 55GFR to work and just grabbed a par of disks from one of my COCOs to work with. I think one of the things I need to do is try to move all of my old 5.25" disks to 3.5" disks

Re: The TRS-80 Journey Continues

On 5/7/22 13:48, Fred Cisin via cctalk wrote: On Sat, 7 May 2022, Bill Gunshannon via cctalk wrote: I had forgotten just how much fun the TRS-80's could be. At least for the moment I am giving up on trying to get a TEAC 55GFR to work and just grabbed a par of disks from one of my COCOs to

Re: The TRS-80 Journey Continues

On 5/7/22 13:48, Fred Cisin via cctalk wrote: On Sat, 7 May 2022, Bill Gunshannon via cctalk wrote: On another note, at one point my 4P failed to read from a floppy.  The "Cass?" prompt showed up followed by the "Memory" prompt.  I'm confused.  I thought the 4P

Re: The TRS-80 Journey Continues

On 5/9/22 14:39, Kelly Leavitt wrote: *From:* cctalk on behalf of Bill Gunshannon via cctalk *Sent:* Monday, May 9, 2022 1:10 PM *To:* cctalk@classiccmp.org *Subject:* Re: The TRS-80 Journey Continues On 5/9/22 13

Re: The TRS-80 Journey Continues

On 5/9/22 17:08, Fred Cisin via cctalk wrote: On Mon, 9 May 2022, Bill Gunshannon via cctalk wrote: I "duplicated" getting the prompts that I don;t think should be there. All I have to do is try to boot from a bad disk.  ie. Hit reset while holding the "1" key with a non-bo

Re: The TRS-80 Journey Continues

Well, I hope this doesn't sound too stupid but I have searched all the manuals I have and the web as well with no luck. How do I make a bootable floppy from a running hard disk system? Not copy an image to a floppy but build a bootable floppy disk on a real running system. I know it can be do

Re: The TRS-80 Journey Continues

On 5/10/22 21:45, Bill Degnan wrote: are you running montezuma CP/M? Among others. TRS-DOS,, LDOS, LS-DOS, DOSPLUS, NEWDOS. I could probably do CPM but at the moment the others are the question. bill

Re: The TRS-80 Journey Continues

On 5/10/22 22:33, Fred Cisin wrote: On Tue, 10 May 2022, Bill Gunshannon via cctalk wrote: DDensity.  I thought there was a single command to make the system part and then you just added the Utilities you wanted. Was it SYSGEN? As near as I can tell SYSGEN only modifies a file (or two) but

Re: The TRS-80 Journey Continues

On 5/11/22 07:11, Bill Degnan wrote: On Wed, May 11, 2022, 6:24 AM Bill Gunshannon via cctalk mailto:cctalk@classiccmp.org>> wrote: On 5/10/22 22:33, Fred Cisin wrote: > On Tue, 10 May 2022, Bill Gunshannon via cctalk wrote: >> DDensity.  I thought there was a

Re: The TRS-80 Journey Continues

On 5/11/22 09:32, Bill Degnan wrote: Each OS has its own process. PIP to copy the rest of the files if you're using CP/M Trsdos 6. (I think) FORMAT :0 BACKUP $:x :1 (SYS,INV) Where x is your hard drive letter. Depends how much is on your hard drive. If possible use a floppy to make a boot

Re: The TRS-80 Journey Continues

On 5/11/22 13:40, Wayne S wrote: There’s some utube videos on making bootable floppies. Maybe one of them will give you some ideas. Here’s one that looks promising. https://m.youtube.com/watch?v=XoxpnZ__w5Q That's a Tandy 2000. Not a TRS-80 at all

Re: The TRS-80 Journey Continues

So, the bad news is no way found so far to make bootable floppies. Maybe not bad news as it gives me another fun project to work on. Further good news, however, is that I have revived my M3SE, MISE and 2 FreHD's so I now have hard disks for pretty much all my old systems. Just have to build u

Re: The TRS-80 Journey Continues

On 5/11/22 14:51, Robert Feldman via cctalk wrote: Date: Wed, 11 May 2022 06:24:38 -0400 From: Bill Gunshannon To: Fred Cisin , "General Discussion: On-Topic and Off-Topic Posts" Subject: Re: The TRS-80 Journey Continues On 5/10/22 22:33, Fred Cisin wrote: On Tue, 10 May

Re: The TRS-80 Journey Continues

On 5/11/22 16:23, Fred Cisin via cctalk wrote: are you running montezuma CP/M? On Wed, 11 May 2022, Bill Gunshannon via cctalk wrote: Among others. TRS-DOS,, LDOS, LS-DOS, DOSPLUS, NEWDOS. I could probably do CPM but at the moment the others are the question. I, also, thought that you were

Re: The TRS-80 Journey Continues

On 5/11/22 17:54, Wayne S wrote: Have you seen this post? https://www.nightfallcrew.com/15/04/2012/tandy-radio-shack-trs-80-model-4p-dos-boot-disk/ I've seen that. Again, that is not building a boot d

Re: The TRS-80 Journey Continues

On 5/11/22 10:34, Mike Katz wrote: I don't know about TRS-DOS but a lot of early floppy disk format programs had an option to make the formatted disk bootable or not. This would copy the bootloader to the appropriate location on the floppy, copy the OS to the floppy and update any necessary poi

Re: The TRS-80 Journey Continues

On 5/11/22 19:51, Fred Cisin via cctalk wrote: On Wed, 11 May 2022, Bill Gunshannon via cctalk wrote: That's the way I have always known it to be. Thus why I said if I work on a project to build boot floppies from hard disk systems I will have to have a collection of BOOT Code for the va

Re: The TRS-80 Journey Continues

On 5/11/22 21:05, Fred Cisin via cctalk wrote: In the meantime (as a proof of concept?), you can manually read and write sectors with SUPERZAP  ? On Wed, 11 May 2022, Bill Gunshannon via cctalk wrote: Wow, SuperZAP.  Time do build a System with NEWDOS80.  :-) Well, it's a good one to

Re: The TRS-80 Journey Continues

On 5/11/22 21:07, Bill Degnan via cctalk wrote: Was it SYSGEN? As near as I can tell SYSGEN only modifies a file (or two) but does not copy any files to a new location. Bill No, SYSGEN is the CP/M command to initialize a blank, formatted disk with the CP/M system: “The SYSGEN transient co

Re: The TRS-80 Journey Continues

Another question for the masters here. I just tried to revive my Model III. More than half the keys don't work anymore. What is the conventional wisdom on cleaning these old TRS-80 keyboards? Is compressed air usually enough? Can I spray the switches with something like DeOxit safely? I ex

PL/M & CP/M

Recently in my wanderings on the web I saw a comment(I don't remember where) that said at least one of the PLM-80 compilers floating around was built from a dis-assembly of another one. Does this ring a bell with anyone? Would anyone know where I might find these sources? I have the Fortran ve

Re: PL/M & CP/M

On 5/30/22 18:20, Chuck Guzis via cctalk wrote: Are you talking about this? https://web.archive.org/web/20131110002247/http://www.nj7p.info/Common/Toys/Software/OS/work/IntelTools.zip (Courtesy of Mark Ogden) Not what I thought I was looking for but may turn out very useful anyway. I might

Re: IBM PC Connecting to DECNET

On 6/3/22 08:16, Paul Koning via cctalk wrote: On Jun 3, 2022, at 12:47 AM, Glen Slick via cctalk wrote: On Thu, Jun 2, 2022, 9:36 PM Warner Losh via cctalk wrote: Speaking of DEPCA, does anybody (a) know what kind of mouse connects (the docs just say DIGITAL MOUSE) and (b) know where to

Re: IBM PC Connecting to DECNET

On 6/3/22 08:46, Antonio Carlini via cctalk wrote: On 03/06/2022 03:09, Rick Murphy via cctalk wrote: On 6/1/2022 12:49 AM, Glen Slick via cctalk wrote: No one ever called it a "Digital Ethernet Personal Computer Bus Adapter", just a DEPCA. I never previously knew that there was any meaning beh

  1   2   3   4   5   6   7   8   9   >