RE: MicroVax II update

> > > > > > Is it possible to use the SCSI2SD on a microPDP-11 under RT-11? I ask > because of the disk size limit under RT-11. I believe so. It can be configured to look like several disks <1Gb for this reason. > > > > Doug > > Dave

Re: TU56 Tape Heads

I have a linctape drive, which is a dectape compatible unit. I do not have the controller or any documentation, but it does have a head which might be useable to replace the broken head. If this would be useful, I would be willing to contribute it to the cause. Please see attached pics. --tom O

Re: VCF West - going?

I'll try to post a video on my channel (youtube/curiousmarc). Maybe not the whole thing, but the stuff that is interesting to me. Marc > On Aug 5, 2016, at 4:38 PM, Brad H > wrote: > > > > Is anyone shooting video for those of us that can't go? I really enjoyed the > videos of VCF East I

RE: the value of old test and repair equipment

I also collect old/classic test gear. Some I use (my main 'scope is a Tekky 555, I think that's old enough to be a classic :-)). Some I just collect because it's a beautiful piece of electronics. My latest find was an HP3770B telephone line analyser -- an instrument to measure the freqeuncy resp

Re: SWTPC 6800

Simplifying the machine configuration can help too. You should only need MP-A (CPU), MP-S (serial interface) and MP-M at $A000 if you have the SWTBUG ROM. It only needs 128 bytes of RAM at $A000 so an unexpanded (4K) or partially populated MP-M would be sufficient. If you have MIKBUG, then you

Re: SWTPC 6800

I've definitely got an MP-B. What I'm thinking is I'll use one of the socketed 16k boards and go through the RAMs to make sure I have good.  But I'm having trouble understanding how to set the jumpers to get the addressing to A000.  I thought I had that by the guide for the ram on the swtp

Somewhat amusing Grauniad article on retrieving old digital material

Germaine Greer's archive: digging up digital treasure from the floppy disks Archivists trying to preserve material stored in obsolete formats face a mighty challenge in retrieving decades of work by the Australian writer and feminist https://www.theguardian.com/books/2016/aug/05/germaine-greer-ar

Re: SWTPC 6800

If you use a 16K board you'll want to config it to start at $8000, so that it covers $8000-$BFFF. If it goes higher than that it may end up in conflict with the ROMS and IO. Alternatively, you could start with a minimal machine by reenabling the 6810 RAM on the CPU board and all you would need p

RE: Mall directory computers

As suggested I have removed the top cover - there was nothing accessible inside the black side cover. It's quite clever how its put together but what did surprise me was the TV remote control hardwired in under the Amiga. I've added some more photos so if anyone has any commentary or info it w

Re: TU56 Tape Heads

On Fri, Aug 05, 2016 at 03:41:32PM -0500, Tom Uban wrote: > I have a linctape drive, which is a dectape compatible unit. I do not have > the controller or any documentation, but it does have a head which might be > useable to replace the broken head. If this would be useful, I would be > willing to

Re: Mall directory computers

> On 6 Aug 2016, at 5:49 pm, Kevin Parker wrote: > > As suggested I have removed the top cover - there was nothing accessible > inside the black side cover. > > It's quite clever how its put together but what did surprise me was the TV > remote control hardwired in under the Amiga. > > I've

Re: VCF West - going?

I'm headed down from Oakland now (Sat) and will be there most of the afternoon. Looking forward to seeing all the goodies and meeting some folks!

Re: VCF West - going?

Bruce Damer speaking now...incredible exhibits very talented exhibitors. .. hard to say what's "best"...taking lots of photos Bill Degnan twitter: billdeg vintagecomputer.net On Aug 6, 2016 11:51 AM, "Fritz Mueller" wrote: > I'm headed down from Oakland now (Sat) and will be there most of the >

RE: SWTPC 6800

Okay... I'm beginning to think RAM config is a part of the problem here. Here's how the boards are configured: DRC 16k Bd 1 - Jumpered for -3FFF DRC 16k Bd 2 - Jumpered for 4000-7FFF MP-M Bd 1 - Jumpers are - I can't figure it out. Supposed to be A to one of the pads marked 0 - 7.. instead A

RE: SWTPC 6800

Gahh! So close! https://drive.google.com/folderview?id=0B4pq0-BHd2x6WVFiZHdyMHBlNW8&usp=shar ing The prompt is totally what should be appearing, at least initially. But it just keeps repeating itself over and over again and doesn't stop. Notes: I tried jumpering the DRC board to A000 properl

Re: VCF West - going?

surprised no one pulled off a live stream of this... In a message dated 8/6/2016 12:09:58 P.M. US Mountain Standard Time, billdeg...@gmail.com writes: Bruce Damer speaking now...incredible exhibits very talented exhibitors. .. hard to say what's "best"...taking lots of photos Bill De

Yard sale goodies

Greetings! Went to a sale this morning and ended up with some neato pieces of equipment. First are two Shugart 8 inch floppy drives ($1 each), a microprocessor training kit ($30) and finally a RCA COSMAC dual 8 inch disk drive ($5). One of the sellers told me to come back tomorrow because he's goin

Re: AT&T 3b2, IBM RT, others

The woman didn't seem to be interested in shipping, Ken. I posted her information online earlier so you can contact her directly. One of the other list members is in Austin and may be able to assist, however. Check the recent archives. :) Cheers, Doug > On Aug 5, 2016, at 10:03 PM, Ken Seefri

Re: Yard sale goodies

On Aug 6, 2016 2:12 PM, "Joe Giliberti" wrote: > > Greetings! > Went to a sale this morning and ended up with some neato pieces of > equipment. First are two Shugart 8 inch floppy drives ($1 each), a > microprocessor training kit ($30) and finally a RCA COSMAC dual 8 inch disk > drive ($5). One of

Re: Yard sale goodies

> On Aug 6, 2016, at 5:12 PM, Joe Giliberti wrote: > > Greetings! > Went to a sale this morning and ended up with some neato pieces of > equipment. First are two Shugart 8 inch floppy drives ($1 each),.., 8in Shugarts at a Yard Sale?! Man, wish I found that at yard sales around here. Nothing

Re: Yard sale goodies

Supposedly the guy has a full COSMAC system that he'll have for me tomorrow. On Aug 6, 2016 5:45 PM, "Peter Cetinski" wrote: > > > On Aug 6, 2016, at 5:12 PM, Joe Giliberti wrote: > > > > Greetings! > > Went to a sale this morning and ended up with some neato pieces of > > equipment. First are

Re: VCF West - going?

I'm too lazy to drive up there myself, but I'm wearing out my mouse button finger clicking "like" on interesting pictures tweeted from the show. Wow, an original Amiga custom chip prototype board stack!! I'm looking forward to seeing any video that comes out from the show. -- Mark J. Blair, NF

RE: SWTPC 6800

I am pleased to report I now have the 6800 alive and working. I discovered one last error I made -- I assumed the cable to be used was a null modem. It was not.. what we needed was a 'standard modem cable' or just straight serial. I hooked that up, then looped the DSR/DTS pins on the cable at th

dfitoimd: decoding Intel M2FM floppy flux images (was Re: Intel 432 floppy flux images for decoding)

Because the cwtool support for Intel M2FM floppy disk flux images isn't publicly available, I've written a crude Python 3 program for converting such images (in DFI format) to ImageDisk images, and put it on github: https://github.com/brouhaha/dfitoimd My ADPLL data separator has parameters t

Video From VCF West

https://www.youtube.com/watch?v=Zjf3WkYDaEk Carl Claunch at Vintage Computer Festival West, Mount View CA 2016

Re: the value of old test and repair equipment

Though I have some background in Telcom, I'd never heard of the HP 3370(B) so had to check it out. Here are a couple of take-away quotes from a thread at: http://www.vintage-radio.net/forum/showthread.php?p=866814 "The A suffix boxes were designed to test phone lines for modems for CCIT standards

Re: VCF West - going?

Had a great time today at VCF West! Awesome presentations. Will anybody be there tomorrow who can give me direction on how to tackle my ""scrolling screen" issue with both of my Lisa 2s? Not looking for anyone to work on them, just on where to start or what to replace. Thanks! On Saturday, Augu