Re: LGP-30 Update

Sweet! Marc > On Mar 19, 2017, at 2:39 PM, Cory Heisterkamp via cctalk > wrote: > > Hey guys, figured it was time for an update on the LGP-30 resuscitation. > > Some further detective work found a leaky 1500uF cap in one of the B+ > supplies which was causing the

MUMPS in the news

http://www.politico.com/agenda/story/2017/03/vista-computer-history-va-conspiracy-000367

Re: 8085 RESET

On 2017-Mar-19, at 4:01 PM, Adrian Graham via cctalk wrote: > On 19/03/2017 19:59, bhilpert wrote: >> On 2017-Mar-18, at 5:21 PM, Adrian Graham via cctalk wrote: >>> >>> 8085-based phone system weirdness continues and I'm beginning to wonder if >>> the PSU rails are all coming up in time for

Re: LGP-30 Update

> > > http://radar58.com/LGP30/wp-content/uploads/2017/03/lgp.jpg > > Even better news is that the three timing tracks appear to be intact on > the drum and the supporting hardware is working. > > http://radar58.com/LGP30/wp-content/uploads/2017/03/scope- > e1489957963176.jpg > (1, 2 and 3

Re: 8085 RESET

On 19/03/2017 19:59, "cctalk" wrote: > On 2017-Mar-18, at 5:21 PM, Adrian Graham via cctalk wrote: >> >> 8085-based phone system weirdness continues and I'm beginning to wonder if >> the PSU rails are all coming up in time for RESET to go high - given there's >> 4116

Re: Portability of Fortran - was Re: Architectural diversity - was Re: Pair of Twiggys

On 03/19/2017 02:14 PM, Toby Thain via cctalk wrote: > "The Fortran codes implementing the most effective methods are > provided in the included diskette. The codes are portable on virtually > any computer, extensively commented and---hopefully---easy to use." Take a look at early ACM CALGO

RE: LGP-30 Update

Impressive progress! Well done! 73 Eugene W2HX -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Cory Heisterkamp via cctalk Sent: Sunday, March 19, 2017 5:40 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: LGP-30 Update Hey guys,

LGP-30 Update

Hey guys, figured it was time for an update on the LGP-30 resuscitation. Some further detective work found a leaky 1500uF cap in one of the B+ supplies which was causing the 'surging' issue on the scope. For good measure I replaced all six 1500 and 3000uF caps even though ripple was low.

Portability of Fortran - was Re: Architectural diversity - was Re: Pair of Twiggys

On 2017-03-17 2:56 PM, Chuck Guzis via cctalk wrote: On 03/17/2017 11:41 AM, Paul Koning wrote: Not quite true. ALGOL was the first choice for a couple of architectures: Electrologica X8, and the Burroughs 48-bit mainframes. And I supposed you could claim that status for Bliss in the case of

Re: Fwd: Re: Architectural diversity - was Re: Pair of Twiggys

On 2017-03-17 3:19 PM, Rich Alderson via cctalk wrote: From: Chuck Guzis Sent: Friday, March 17, 2017 11:27 AM On 03/17/2017 11:09 AM, Fred Cisin via cctalk wrote: and, although we don't know when YOU were playing it, the march had been around half a century, so was probably playing on the

Re: Looking for cassete basic rom code

On Mar 19, 2017 12:47 PM, "Adam Sampson via cctalk" wrote: > > Alexandre Souza via cctalk writes: > > > I lost my XT BASIC ROMS, can someone send me the code so I can burn it > > and replace on my XT? > > minuszerodegrees.net has several versions of

Re: 8085 RESET

On 2017-Mar-18, at 5:21 PM, Adrian Graham via cctalk wrote: > > 8085-based phone system weirdness continues and I'm beginning to wonder if > the PSU rails are all coming up in time for RESET to go high - given there's > 4116 DRAMs in there isn't there supposed to be a proper power up order? > >

Re: Architectural diversity - was Re: Pair of Twiggys

> On Mar 19, 2017, at 2:36 PM, Chuck Guzis via cctalk > wrote: > > ... > Still, vendors kept extending their FORTRAN IVs. I think I remarked on > a CDC syntactic extension that resulted in the ability to write an > ambiguous statement, with no clear way to resolve the

Re: Extracting data from DEC VAX tape recordings

> I have a rather crude way of reading 9-track tapes in 1600 and 6250 > BPI densities. I have worked out how to unpack VAX BACKUP format > tapes, if that is how they were written. I have read some tapes that > were about this old, but they have been stored in excellent > conditions, and

Re: CF cards as storage - wear leveling

I don't think anybody is actually using real CF cards anymore, they are about a decade out of date. Jon Jon, This is the list where we discuss using stuff that's a decade and more out of date. (I've got a large box of real 16MB CF cards that I got for nothing on freecycle that I keep

Re: CF cards as storage - wear leveling

On 03/19/2017 11:20 AM, Warner Losh via cctalk wrote: > Just about ANY CF card you buy today new will have wear leveling. > It's almost impossible without trying to be an ass to the card to > have it fail in a few weeks. I've run 64MB cards in Soekris boxes for > a decade w/o any problems. The

Re: Architectural diversity - was Re: Pair of Twiggys

On 03/19/2017 08:04 AM, Bill Gunshannon via cctalk wrote: > FORTRAN. FORTRAN D (DOS/360), F and G (OS/360), which were FORTRAN > IV compilers (retronamed "Fortran 66"). VAX/VMS Fortran 77, except > most VAXen of the day you seem to be talking about ran BSD Unix and > Fortran was handled by f2c.

Re: CF cards as storage - wear leveling

On Sun, Mar 19, 2017 at 10:06 AM, Jules Richardson via cctalk wrote: > > I just bought an IDE-CF adapter the other day with the intention of > replacing the spinning rust in my disk imaging system (which is some > early/mid-90s 80486-based thing). > > However, the CF entry

Re: CF cards as storage - wear leveling

On 03/19/2017 11:06 AM, Jules Richardson via cctalk wrote: I just bought an IDE-CF adapter the other day with the intention of replacing the spinning rust in my disk imaging system (which is some early/mid-90s 80486-based thing). However, the CF entry on Wikipedia says: "Most CompactFlash

Re: Extracting data from DEC VAX tape recordings

On 03/18/2017 06:28 PM, William Pearse via cctalk wrote: Hello, I'm sorry to bother you, but I was hoping you might be able to help me with a problem I'm having getting hold of some scientific data that's currently stored on DEC VAX magnetic tape. A colleague of mine carried out some

Re: Architectural diversity - was Re: Pair of Twiggys

> On 19 Mar 2017, at 16:14 , Paul Koning via cctalk > wrote: > > >> On Mar 19, 2017, at 11:04 AM, Bill Gunshannon via cctalk >> wrote: >> ... >> That's because, unlike the COBOL Professionals, the Fortran people drank from >> the OO KoolAid. >

Re: Looking for cassete basic rom code

Alexandre Souza via cctalk writes: > I lost my XT BASIC ROMS, can someone send me the code so I can burn it > and replace on my XT? minuszerodegrees.net has several versions of the XT ROM images, along with lots of other useful service information for PC/XT/AT machines:

RE: Re: Architectural diversity - was Re: Pair of Twiggys

> FORTRAN was, and still is, widespread, even if it doesn't look > anything like itself these days. On Sun, 19 Mar 2017, Bill Gunshannon via cctalk wrote: That's because, unlike the COBOL Professionals, the Fortran people drank from the OO KoolAid. Yes, there does exist an Object Oriented

Looking for cassete basic rom code

Dear friends Is it allowed to request a ROM code? I lost my XT BASIC ROMS, can someone send me the code so I can burn it and replace on my XT? Thanks! Alexandre ---

CF cards as storage - wear leveling

I just bought an IDE-CF adapter the other day with the intention of replacing the spinning rust in my disk imaging system (which is some early/mid-90s 80486-based thing). However, the CF entry on Wikipedia says: "Most CompactFlash flash-memory devices limit wear on blocks by varying the

Re: Architectural diversity - was Re: Pair of Twiggys

> On Mar 19, 2017, at 11:04 AM, Bill Gunshannon via cctalk > wrote: > ... > That's because, unlike the COBOL Professionals, the Fortran people drank from > the OO KoolAid. Speaking of OO and COBOL, a colleage of mine has a button with the text "ADD 1 TO COBOL".

RE: Re: Architectural diversity - was Re: Pair of Twiggys

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Rich Alderson via cctalk [cctalk@classiccmp.org] Sent: Friday, March 17, 2017 3:07 PM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: RE: Re: Architectural diversity - was Re: Pair

Re: LINCtape/DECtape Head Alignment

Curious: How are you measuring the signal from the head? Do you have an honest to gosh differential probe, or are you using some other technique? (If you have a differential probe, then the TU56 manual indicates that you should see 10mv-12mv (the addition of the two paired heads together), so

Extracting data from DEC VAX tape recordings

Hello, I'm sorry to bother you, but I was hoping you might be able to help me with a problem I'm having getting hold of some scientific data that's currently stored on DEC VAX magnetic tape. A colleague of mine carried out some ecological fieldwork ~30 years ago, and her results are stored

Re: DEC items

Peter, Did you get my earlier message about the PDPs? I'm in the bay area as well. Marc Howard On Fri, Mar 17, 2017 at 3:35 PM, Peter C. Wallace via cctalk < cctalk@classiccmp.org> wrote: > On Fri, 17 Mar 2017, Paul Anderson via cctalk wrote: > > Date: Fri, 17 Mar 2017 17:15:42 -0500 >> From:

Re: DEC items

Paul, Think you have me mixed up with someone else -Pete On Mar 17, 2017 3:15 PM, "Paul Anderson via cctalk" wrote: Hi Peter, Sounds like a nice collection. Which PDP11s do you have? Thanks, Paul

RE: Re: Architectural diversity - was Re: Pair of Twiggys

From: ben Sent: Thursday, March 16, 2017 6:28 PM > On 3/16/2017 5:16 PM, Bill Gunshannon via cctalk wrote: >> From: Chuck Guzis >> Sent: Thursday, March 16, 2017 6:08 PM >>> And people who weren't there can't understand why FORTRAN was the closest >>> thing to a "portable" language... >> Not

RE: I hate the new mail system

From: Jay West Sent: Thursday, March 16, 2017 1:31 PM > We've been in the process of moving our datacenter. As a result, changing > headers on this list has been the last thing on my mind priority-wise. > Add to that, we still have a few machines to move that will require >

Re: FTGH Large amount of DEC/Misc Classic computer hardware

I would love to get a PDP-11 & I'm in the Bay Area. Marc Howard On Fri, Mar 17, 2017 at 1:14 PM Peter C. Wallace via cctalk < cctalk@classiccmp.org> wrote: > On Fri, 17 Mar 2017, Kirk Davis wrote: > > > > > Date: Fri, 17 Mar 2017 13:08:31 -0700 > > > From: Kirk Davis > > >

RE: Fwd: Re: Architectural diversity - was Re: Pair of Twiggys

From: Chuck Guzis Sent: Friday, March 17, 2017 11:27 AM > On 03/17/2017 11:09 AM, Fred Cisin via cctalk wrote: >> and, although we don't know when YOU were playing it, the march had >> been around half a century, so was probably playing on the radio to >> inspire Backus. Does that mean that

Re: HP 9000/382 Questions

Just threw out all of my HP/UX v9 training manuals from that era, last year. Reliable machine for the era when Intel 80386/80486 were the top processors. greg Sent from iPad Air

Re: I hate the new mail system

My puff of smoke. The email provider used decided to quit (verizon) so its gmail. The list works. It broke from time to time before and kept sending everything at least twice if not many more times. This whole discussion is a waste of bandwidth and a disrespect to those that keep it