Re: Rod Coleman's personal history of founding, building & running SAGE

> Thanks for the link as didn't realize 68000 was > used for home systems before I ran into Mac. Don't forget about Alpha Micro, though they preferred to be in multi-user vertically integrated environments rather than the engineering and personal use SAGE seemed to be targetting. --

Re: Rod Coleman's personal history of founding, building & running SAGE

On 1/2/2021 7:23 PM, Fred Cisin via cctalk wrote: On Sat, 2 Jan 2021, Nigel Johnson via cctalk wrote: For one exciting moment there I thought that you were talking about the Semi-Automatic Ground Environment - which a friend of mine was a tech on in North Bay, ON, part of the DEW line! I was

Re: Rod Coleman's personal history of founding, building & running SAGE

On Sat, 2 Jan 2021, Liam via cctalk wrote: I'm not really familiar with SAGE machines. They were not as well-known in the UK, I think, being upmarket from the Apple ][ and IBM PC, both of which were eye-wateringly expensive by UK standards of the time. Possibly, they weren't aimed at the

Re: Rod Coleman's personal history of founding, building & running SAGE

I also had the opportunity to visit the UGC, but after operations had moved aboveground. The followup to SAGE, the AN/FYQ93 (ROCC, SOCC, JSS) equipment was still in place, but powered down. This was in 2007. I had previously worked on both SAGE and the ROCC at McChord AFB as a computer

Re: Rod Coleman's personal history of founding, building & running SAGE

North Bay is not on the DEW line the DEW line is above the arctic circle and while North Bay may seem like the far north to some it is a long way below the arctic circle is actually at about the level of the Pine Tree Line.  CFB North Bay was the SAGE site for the 22nd NORAD region.  The SAGE

Re: Rod Coleman's personal history of founding, building & running SAGE

Probably read about this machine in Byte back then but was programming PDP-11's. Was very disappointed in IBM PC as IMO was far inferior to PDP-11 which was was easier to interface to data acquisition hardware and had a much nicer instruction set. Ran into 68000 processor for first time in

Re: Rod Coleman's personal history of founding, building & running SAGE

On Sat, 2 Jan 2021, Nigel Johnson via cctalk wrote: For one exciting moment there I thought that you were talking about the Semi-Automatic Ground Environment - which a friend of mine was a tech on in North Bay, ON, part of the DEW line! I was getting ready to up stakes and hop off to

Re: Rod Coleman's personal history of founding, building & running SAGE

For one exciting moment there I thought that you were talking about the Semi-Automatic Ground Environment - which a friend of mine was a tech on in North Bay, ON, part of the DEW line! I was getting ready to up stakes and hop off to Philadelphia! cheers, Nigel Nigel Johnson, MSc., MIEEE,

Re: Rod Coleman's personal history of founding, building & running SAGE

On Sat, Jan 2, 2021, 7:11 PM Liam Proven via cctalk wrote: > This may be old news -- it was new to me, though. > > > https://suddendisruption.blogspot.com/search/label/Booting%20Sage%20Computer > > I'm not really familiar with SAGE machines. They were not as > well-known in the UK, I think,

Rod Coleman's personal history of founding, building & running SAGE

This may be old news -- it was new to me, though. https://suddendisruption.blogspot.com/search/label/Booting%20Sage%20Computer I'm not really familiar with SAGE machines. They were not as well-known in the UK, I think, being upmarket from the Apple ][ and IBM PC, both of which were

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

On Sat, Jan 02, 2021 at 09:29:16AM -0500, Chris Zach wrote: > Meantime, anyone know how to convert one of Dave G's disk images on the MFM > formatter to a format that can be read by SIMH? I have been working a lot > with this thing, and would like to see if any of the data is really there. > The

Winsystems SAT-V40

I know this is a long shot, but I'm asking anyhow. I'm looking for the Ops Manual for a Winsystems single-board system. Model: SAT-V40 P/N: 400-0186-000 The SAT-V41 model is essentially the same board, so I'd settle for docs for that. There are references (from 2012) to SAT-V41.PDF,

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

This is my info on RD53 sticking heads. Your symtoms match what I have seen with this drive. If the heads are stuck to the rubber bumper the drive will spin back down when it finds the heads won't move. It will also spin down if it can't switch from the coarse speed control loop to using the head

TRS-80 Trash Talk Live is Tonight at 9pm EST

Come join us on Zoom tonight at 9pm EST for our annual end of year show as we engage in a TRS-80 community retrospective of 2020 and talk about where we want to see the community go in 2021. Email for Zoom details: trs80trasht...@gmail.com Or you can watch

dp8340n IBM 3270 protocol transmitter encoder

Hi, In cleaning up my lab and stores, I have discovered that I have a tube of 10 of these chips. I'm not quite sure what they are for or were used in (or even where I got them). Anyway, if they are, in fact, for managing 3270 mainframe terminal traffic, they're probably not of much use to

MM11-F manual/prints available

I finally got around to completing the processing of the scanned images of the pages of the MM11-F manual and engineering drawings. A PDF is available here: http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/dload/DEC-11-HMFA-D_MM11-F_Manual.pdf

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

Well, you could always send it to OnTrak. I remember when they recovered 99.9% of all the data on a hard crashed Maxtor 3380 disk. On Thanksgiving weekend. So it depends on how much you want the data. :-) If I get better at this whole thing you could send it over and I'll see what I can get.

RE: ICL PERQ 2 T2 Micropolis 1303 spinning down.

My only solution has been to open up the HDD itself and attempt to clean up the goo. Or, in some cases put a sliver of paper between the rubber bumper and the head assembly to stop it sticking. I don’t have a clean room and I know this is not advised, but it has worked for me. Regards

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

I have heard that Micropolis 1325 is prone to have a problem with a rubber bumper that sticks to the head mechanism. Maybe it is the same for this Micropois drive? What resolutions are there to this type of problem? Yep, and I'm sure a lot of drives from this era have the same issue. Or the

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

Worked a bit more with this drive. Removed the PCB and found the combined brake and head lock solenoid. It operated freely. As I couldn't find any way of observing the head positioning mechanism from the outside I opened the lid of the drive. With the solenoid in the unlocked position it was

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

On Sat, Jan 2, 2021 at 2:03 PM Chris Zach via cctalk wrote: > > I am dealing with this a *lot* with all these disks from Bob's basement. > The problems seem to be three categories: > > 1) Disk does not spin up at all. So far it's all been sticking motors, > they don't have a lot of start up

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

Hi Chris, Den lör 2 jan. 2021 kl 14:03 skrev Chris Zach via cctalk < cctalk@classiccmp.org>: > I am dealing with this a *lot* with all these disks from Bob's basement. > The problems seem to be three categories: > > 1) Disk does not spin up at all. So far it's all been sticking motors, > they

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

Den lör 2 jan. 2021 kl 11:48 skrev Rob Jarratt : > When that has happened to MFM disks of mine it has been because for one > reason or another the heads have not moved and found track 0. Why they > aren't moving could be more than one reason. They could be stuck, or there > could be some other

Re: ICL PERQ 2 T2 Micropolis 1303 spinning down.

I am dealing with this a *lot* with all these disks from Bob's basement. The problems seem to be three categories: 1) Disk does not spin up at all. So far it's all been sticking motors, they don't have a lot of start up torque at all. For the first 4 disks (ST412, Quantum 30mb, and two ST506)

Re: terminals-wiki?

On Sat, Jan 2, 2021 at 10:42 AM Dave via cctalk wrote: > > The terminals wiki (https://terminals-wiki.org) seems to have been down for > several months. I hope the maintainer is OK. > > Does anyone know if this site is gone for good? Is there a mirror anywhere? > The wayback machine has a

RE: ICL PERQ 2 T2 Micropolis 1303 spinning down.

When that has happened to MFM disks of mine it has been because for one reason or another the heads have not moved and found track 0. Why they aren't moving could be more than one reason. They could be stuck, or there could be some other problem that is preventing them getting the power needed

RE: Seeking: TMS32010 Assembly Language Programmer's Guide (1983)

Al; Thank you. For all four! -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Al Kossow via cctalk Sent: Friday, January 01, 2021 12:12 PM To: cctalk@classiccmp.org Subject: Re: Seeking: TMS32010 Assembly Language Programmer's Guide (1983) On 9/26/20

terminals-wiki?

The terminals wiki (https://terminals-wiki.org) seems to have been down for several months.  I hope the maintainer is OK. Does anyone know if this site is gone for good?   Is there a mirror anywhere?  The wayback machine has a few pages, but mostly serves to capture the look Dave

ICL PERQ 2 T2 Micropolis 1303 spinning down.

I have a nice ICL PERQ 2 T2 that I am going to start working with now. First thing was to try to image the hard drive. It is a Micropolis 1303. It spins up but when it reaches what I think the correct speed it immediately spins down. Usually I think there would be a click and then the heads would