test-drb November 2007

test-drb@ccmp.vtda.org

229 participants
508 discussions

by wdonzelli＠gmail.com

One of my fun finds at the Record Fair while you folks were all out at VCF X is Paul Zukofsky's Lyric Variations for Violin and Computer, >from 1967. Several of the pieces were made by an IBM 7094 running the MUSIC 4B program - non-real-time digital synthesis software. The pieces are interesting, and really sound like anything a good sized Moog modular could have made, but these pieces were done completely by the 7094 to seven track tape in batch mode, where they were later fed into a D/A converter in the studio. Listening to these, and knowing what went into making them, make them a bit more special than just music. Does MUSIC 4B still exist? Maybe this is an Al question. It certainly would be neat to play around with on a 7094 simulator. -- Will

17 years, 1 month

Older Apple Macintosh books, manuals, Apple 2e card.

by compoobah＠valleyimplants.com

On Nov 11, 2007, at 2:08 PM, cctalk-request at classiccmp.org wrote: > Those Apple // cards, are they the actual 100% emulation of the //e or > //c under old PDS Macs? Was there a SCSI 5.25" drive for Macs that > would read the Apple // disks? > The Apple // cards (I think it was a //e) fit in the LC PDS (LC, LCII, LCIII, not sure about the '040 LCs) and are a genuine Apple product that was pretty much 100%. While most of the (usually schools) using them would move their Apple // software to either 3.5" or hard disk, I think that Apple made a Macintosh-compatible 5.25" floppy that would read Apple // disks (I know they made an IBM 5.25"-compatible floppy drive for Macintosh back in the late 1980s), but not many were sold. Pretty well engineered device if you have a LC-series Mac.

17 years, 1 month

LIST ADMIN Re: Laserdiscs

by dkelvey＠hotmail.com

> From: trixter at oldskool.org> > Jay West wrote:> > Jim wrote...> >> Public Service Announcement: The entire world of classic computer > >> collectors/restorers/enthusiasts is *not* made up of DEC-heads. Other > >> companies existed; other niches exist. It's a big hobby out there.> > > > Someone take a picture. Jim and I are in complete agreement on something ;)> > Holy mackerel :-) Hi I wish there was more talk about the Canon Cat but I also realize that it is quite rare( although, Jack Rubin just found one ). R. Cini's thread is of interest to me because I've built up a CP/M BIOS from scratch. Still, it is Jay's job to keep this list from just diverging into what ever. I've seen one of the news groups that's original charter was great that fell to a wasteland without the vigilance of a moderator. I'd not like to see that happen to this list. I think most ( including me ) have the occasional OT post but some seem to think that that is what the list is for. I try to police myself because I know how annoying it is to post that I could care less about. It is still a great list. Many on the list are great contributors. It is not a place to stand on a soap box and tell the world about everything that they can think of. Dwight _________________________________________________________________ Windows Live Hotmail and Microsoft Office Outlook ? together at last. ?Get it now. http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=CL1006269…

17 years, 1 month

Systems Industries Model 9400 Disc Controller

by technobug＠comcast.net

A friend's 11/70 has gone through the last of his SI 9400 disk controller spares and he has tasked me with the repair task. Does anyone have documentation for this beast? CRC

17 years, 1 month

Who keeps buying DECTalks?

by wdonzelli＠gmail.com

> I suspect they're being purchased by dealers. I'd like one, but > haven't been willing to shell out the $$$'s. Dealers do not buy many things on Ebay - a general rule of thumb. It does not make much sense for dealer to pay top dollar for stuff. Lets see - 1) its DEC 1) its old 1) its cool. Collector demand? Nahhhh.... -- Will

17 years, 1 month

S100 Floppy Controller Question

by dm561＠torfree.net

-------------Original Messages: Date: Sun, 11 Nov 2007 11:23:30 -0500 From: "Richard A. Cini" <rcini at optonline.net> Subject: Re: S100 Floppy Controller Question Good. The Morrow controller then falls into the same category in my mind as the ComprPro Disk 1 with the added bonus of not requiring mods to my IMSAI. Now the thousand-dollar question -- does anyone have a suitable disk image I could use? On 11/11/07 10:55 AM, "Tim Shoppa" <shoppa_classiccmp at trailing-edge.com> wrote: > "Richard A. Cini" <rcini at optonline.net> wrote: >> Oh, I also just found a Morrow DiskJockey 2D/B in one of my boxes. This >> model has only a 50-pin connector and the manual talks about the SA800, so >> I'm assuming it's an 8"-only controller. > > Well, originally intended for 8" drives, but with a suitable adapter > cable glue and a slightly modified BIOS it'll do 5.25" and 3.5" drives. > > Tim. Rich ----------Reply: I think Tim's point was that if your controller's smart enough to deal with a relatively modern 8" drive like a TM848 it could probably deal equally well with a 5.25" HD drive and you could transparently restore an 8" image (if you have one) to the 5.25" disk. The controller (and CP/M) would not even know that it's a 5.25 instead of an 8"; my Cromemcos certainly don't, although a different FDC might well require some mods to the BIOS. Worth a try in any case. m

17 years, 1 month

Furguson Big Board II (was CRC question)

by aek＠bitsavers.org

> My Bigboard II has a bit of interesting code in the EPROM http://en.wikipedia.org/wiki/Bigboard The EPROM source was available with the board, there should be no need to disassemble it.

17 years, 1 month

S100 Floppy Controller Question

by ajp166＠bellatlantic.net

> >Subject: Re: S100 Floppy Controller Question > From: M H Stein <dm561 at torfree.net> > Date: Sun, 11 Nov 2007 17:33:20 -0500 > To: "'cctalk at classiccmp.org'" <cctalk at classiccmp.org> > >-------------Original Messages: >Date: Sun, 11 Nov 2007 11:23:30 -0500 >From: "Richard A. Cini" <rcini at optonline.net> >Subject: Re: S100 Floppy Controller Question > >Good. The Morrow controller then falls into the same category in my mind as >the ComprPro Disk 1 with the added bonus of not requiring mods to my IMSAI. The Compupro only uses pines 20 and 70 for ground, you can cut if needed. HOWEVER and VERY BIG DEAL the CPRO 1 can boot... 8" or 5.25". The Cpro 1A is more adept at that and more flexible. Both have the problem of if you boot any of the sandard CPRO images the assumed serial port is one of the standards used by CPRO. The manual will help with this. >Now the thousand-dollar question -- does anyone have a suitable disk image I >could use? > CPRO images are out there. If you go with 5.25" a PC can write a DD boot disk (uses same 765!). Also if you can boot a 5.25" image you can boot a 3.5" image of the track/sector layout is same and same density. > >On 11/11/07 10:55 AM, "Tim Shoppa" <shoppa_classiccmp at trailing-edge.com> >wrote: > >> "Richard A. Cini" <rcini at optonline.net> wrote: >>> Oh, I also just found a Morrow DiskJockey 2D/B in one of my boxes. This >>> model has only a 50-pin connector and the manual talks about the SA800, so >>> I'm assuming it's an 8"-only controller. >> >> Well, originally intended for 8" drives, but with a suitable adapter >> cable glue and a slightly modified BIOS it'll do 5.25" and 3.5" drives. >> >> Tim. > >Rich > >----------Reply: > >I think Tim's point was that if your controller's smart enough to deal with a >relatively modern 8" drive like a TM848 it could probably deal equally >well with a 5.25" HD drive and you could transparently restore an 8" image >(if you have one) to the 5.25" disk. The controller (and CP/M) would not >even know that it's a 5.25 instead of an 8"; my Cromemcos certainly don't, >although a different FDC might well require some mods to the BIOS. Different FDC WILL require a different bios. Same for SERIAL IO. Allison >Worth a try in any case. > >m

17 years, 1 month

Who keeps buying DECTalks?

by silent700＠gmail.com

On 11/11/07, Zane H. Healy <healyzh at aracnet.com> wrote: > I suspect they're being purchased by dealers. I'd like one, but > haven't been willing to shell out the $$$'s. Grrr, dealers. Yep there are quite a few in the for-sale section of ebay for $500 and up. Uh, no thanks.

17 years, 1 month

modern serial terminal

by ajp166＠bellatlantic.net

> >Subject: Re: modern serial terminal > From: Fred Cisin <cisin at xenosoft.com> > Date: Wed, 07 Nov 2007 16:48:04 -0800 (PST) > To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> > >On Wed, 7 Nov 2007, ajones wrote: >> There was never a version of Linux, or UNIX in general, less bloated >> than Windows 95. > >Xenix ran on an 8088 XT with 640K. The IBM XT hard disk controller could >be jumpered (undocumented) to handle other sizes of drives other than the >412 (10MB). One of those sizes was 26MB, which was just right for a 10MB >DOS partition and a 16MB Xenix partition (that was how I found out about >the XT hard disk controller's undocumented jumper solder pads) > > >> [1] Yes, Windows 95 had memory protection and preemptive multitasking. > >Are there multiple definitions of "preemptive"? >Or, is "preemptive" a quantitative, rather than qualitative attribute? >I would not consider Win95, nor early Mac, to be "preemptive". Even NT4, >which is purportedly preemptive has a few two many situations where/when >it can not be preempted. For example, when opening a telnet session, it >often can NOT be preempted until it gets to the point of success or failure. Time for a topic change. Is that an OS failure or an application failure? As I see it and run it NT is preemtive but applications can block or alter lower priority tasks making it possile to do nasty thing like block keyboard task. I suspect it's legacy plus the tendancy to make forground tasks the higher priortity may have something to do with it. Linux and VMS seem to be clearly preemptive as are a number of other OSs. Allison

17 years, 1 month

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test-drb November 2007