test-drb January 2008

test-drb@ccmp.vtda.org

221 participants
430 discussions

Subject: Re: div by 10 on Z80 was RE: Reading Polymorphic

by cclist＠sydex.com

> Date: Sun, 20 Jan 2008 20:57:27 -0800 > From: Brent Hilpert <hilpert at cs.ubc.ca> > Subject: Re: div by 10 on Z80 was RE: Reading Polymorphic --- > (I expect you may have noticed already..) the subroutine (div10s) is > only called once now, you could inline it to save another 4 bytes. You can do a bit better with that and by using the carryout to form the quotient bits: div10: xor a ld de,0fd80h ; largest power of 2 times 10 less then 800d ld b,07 ; only seven loops needed to finish divide 80 divloop: add hl,de ; trial subtract jr c,div10s1 ; carry means trial passed sbc hl,de ; undo previous add, carry is clear div10s1: rl a add hl,hl ; shift number to reuse same constant, 640 decimal djnz divloop add hl,hl ; push full remainder in HL ret Again, I haven't tried it out, but it should work. Cheers, Chuck

17 years, 3 months

div by 10 on Z80

by cclist＠sydex.com

> Date: Wed, 23 Jan 2008 18:48:27 -0700 > From: woodelf <bfranchuk at jetnet.ab.ca> > Well it does make for Software Updates to come out a **Tad** Slower > than most systems. Look at the ADVENTURE update, almost 20 years later. > :) I assume that was an intentional pun. Very clever. Cheers, Chuck

17 years, 3 months

cctalk Digest, Vol 53, Issue 44

by compoobah＠valleyimplants.com

On Jan 22, 2008, at 11:52 PM, cctalk-request at classiccmp.org wrote: >> 12) Bend over the locking tap, refit the case. > > It's not the same without the Terry Davey cutaway drawings and > "Refitting is > the reverse of removal" ;-) The one I like is the stock "this was changed in the XXXX model year" Oh, very helpful. About as helpful as a MS-DOS 6 bundled "user's guide"

17 years, 3 months

OLD Computer Magazines to go

by dave＠mitton.com

I'm trying to get rid of some older computer magazines to anyone interested in picking them up (Northwest of Boston) or paying Media mail rates. PC Tech Journal 1985 thru 1989v4 with a couple missing 1988 issues and 1984 v1 & v6. Dr Dobbs Journal: 1976 v1 book reissue & Mar, Sept, Oct and most of years 1977 thru 1985 I also have many issues of S-100 Microsystems/Microsystems/Microsystems Journal for 1980 thru 1988. I filled in the missing issues at the CHM and therefore the list is now full of holes. Exact issue counts available upon request. Dave

17 years, 3 months

Fwd: Xerox 1186 LISP machines in Illinois

by mtapley＠swri.edu

All, Possibly redundantly to some of you, I'm passing on this email, which I received this morning (presumably due to my presence on the Color Computer or Classic-Comp rescue lists). The systems are in southern Illinois, according to a later exchange with the offerer. Diana included a set of pictures with the first email, which I'll be happy to forward if you are interested, but I strongly suggest you contact her directly. I have no connection to her or previous acquaintance with her. >Date: Thu, 24 Jan 2008 09:31:52 -0600 (GMT-06:00) >From: Diana Moutell <dmoutell at earthlink.net> >Subject: Xerox 1186 LISP machines > > Hello!! > > >I wondered if you had an interest in the Xerox 1186 produced around >1986. Pictures are attached. I know they are quite uncommon. I have >7 of the computers... one monitor.... and now one keyboard. I just >found the keyboard... and an amazing amount of literature, manuals >and software (in addition to what is in the one picture). I >literally have mountains of manuals and boxes of software... really >large floppies and then the smaller ones I remember from my first >computer days (the 5 inch ones) !! I have yet to look through it all >and determine what is there. > >All of the Xeroxes I have are pretty much the same except some are >missing the C7 rigid 80Mb disk. I took pictures of the back of one >with the drive and one without the drive. The product code on the >one pictured with the C7 is 62H. Some of them have a panel over the >place that contains C6 and C7. I did not remove it and I am not sure >I can easily. I believe the person who had them had them all >together. > > >There are only two external hard drives that attach to the back - >the product code on the bottom of the one is 78D. There is a picture >of one of them. I know that they have had one owner and have been in >one general area since the beginning. I believe they have been moved >twice in their life after the initial delivery. > > At this time I do not know if any will power up. I believe I found >their original power cords.... but I do know that the hard drives >have been erased because the data that had been stored on them was >of a private research based nature. I will try some soon. > > They are heavy and really take the space... but I, as a collector >of hundreds of things, am accustomed to tripping over my stuff!!! I >only have received a couple of bruises from these and their >acquisition! I do not collect computers, though. However, as I look >at them and all the stuff with them... I and my friends fear that I >will become attached to them, and never be able to let them go. >However, my intent is to sell them. I have seen so many sites of >individuals who have such a love for saving, protecting and >restoring these things. My collections are really just to admire not >to repair or use. In fact, I am oftened asked "does it work" when >people look at my stuff (especially the vintage radios) and my >answer is " I do not know." Most of the have never been plugged in >at all. I just want them because they are beautiful. > >If I do let go of these... I want to know they will be safe for eternity. > >If you are interested in more info... let me know and when I learn >more and compile the list of literature... I will send it to you. > > >Thanks!! >Diana > > >Diana Fuller-Moutell ><mailto:dmoutell at earthlink.net>dmoutell at earthlink.net >Why Wait? Move to EarthLink. > -- - Mark, 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

17 years, 3 months

DEC Professional 350 help

by thrashbarg＠kaput.homeunix.org

Hi, I've had a very dead DEC 350 in the shed for a while now and I've just had a look at it, there are a lot of chips on it I can use. But before I give everyone here a heart attack, is there any chance of rescue? When I turn it on the 4 numbered LED's come on immediately, as does the green DC light. Then nothing. Not a blip. I tried removing all unneeded cards and still nothing. Is this thing absolutely dead? Or can it be saved. Also, is there any information for the three LSI-11 chips on it - pinouts etc? I haven't been able to find anything about them anywhere. Perhaps they remained proprietary to DEC. I'd like to see them out of curiosity, and if the 350 itself proves to be completely dead I'll see if I can wire them up on some prototype board and have a play around. One chip is labeled (perhaps it's a FPU, I don't know) DEC 304 E 21-15542-01 6436-40 I 8352 (that looks like a date code) The other two have two dies each (which I guess is the processor itself) IC 1, Left (closest to pin 1): DEC 303E 23-001C7-AA 6319-29 8348 TIWAN (date code again) Right: evidence of a label exists, but it's unreadable IC 2, Left: DEC 303E 23-002C7-AA 6587-03 8425 Right: DEC 303E 23-203C7-AA 6638-10 8422 there is also some print on the ceramic itself IC1: 57000001A1 and a date code IC2: 57000101A1 date code Any information about these chips or the DEC Pro 350 is appreciated! Thanks, Alexis.

17 years, 3 months

Xerox 1186 LISP machines available in southern Illinois

by frustum＠pacbell.net

I received an email that has sent to a number of other folks, but but apparently there are no takers yet, and Xerox computers aren't up my alley. I asked and she said it would be OK to forward her email to the list. If you are interested, and really can give these machines a caring home, and not just space in your trophy collection, please let me know and I'll forward your contact information to the sender and she can sort out who should get it. (quote) I wondered if you had an interest in the Xerox 1186 produced around 1986. Pictures are attached. I know they are quite uncommon. I have 7 of the computers... one monitor.... and now one keyboard. I just found the keyboard... and an amazing amount of literature, manuals and software (in addition to what is in the one picture). I literally have mountains of manuals and boxes of software... really large floppies and then the smaller ones I remember from my first computer days (the 5 inch ones) !! I have yet to look through it all and determine what is there. All of the Xeroxes I have are pretty much the same except some are missing the C7 rigid 80Mb disk. I took pictures of the back of one with the drive and one without the drive. The product code on the one pictured with the C7 is 62H. Some of them have a panel over the place that contains C6 and C7. I did not remove it and I am not sure I can easily. I believe the person who had them had them all together. There are only two external hard drives that attach to the back - the product code on the bottom of the one is 78D. There is a picture of one of them. I know that they have had one owner and have been in one general area since the beginning. I believe they have been moved twice in their life after the initial delivery. At this time I do not know if any will power up. I believe I found their original power cords.... but I do know that the hard drives have been erased because the data that had been stored on them was of a private research based nature. I will try some soon. They are heavy and really take the space... but I, as a collector of hundreds of things, am accustomed to tripping over my stuff!!! I only have received a couple of bruises from these and their acquisition! I do not collect computers, though. However, as I look at them and all the stuff with them... I and my friends fear that I will become attached to them, and never be able to let them go. However, my intent is to sell them. I have seen so many sites of individuals who have such a love for saving, protecting and restoring these things. My collections are really just to admire not to repair or use. In fact, I am oftened asked "does it work" when people look at my stuff (especially the vintage radios) and my answer is " I do not know." Most of the have never been plugged in at all. I just want them because they are beautiful. If I do let go of these... I want to know they will be safe for eternity. If you are interested in more info... let me know and when I learn more and compile the list of literature... I will send it to you. (end quote)

17 years, 3 months

BTI 8000

by aek＠bitsavers.org

> Ron Crandall. > Since much of the team came from > the same school in Oregon and worked on the same system, the 8000 > suffered a classic case of second system syndrome. "OS-3, the Oregon State Open Shop Operating System James W. Meeker, Ronald Crandall, Fred A. Dayton, G. Rose" > Also keep in mind that BTI's bread-and-butter wasn't the 8000, but the > 5000, which was essentially a clone of the HP 2100 and ran HP software... eeek! too much synchronicity going on there. HP 2000, BTI, OS-3 All systems I've been researching for a while. No wonder the names sounded familiar. I have seen the BTI 5000 front panel, looks like a simplified HP1000 one.

17 years, 3 months

Tom Poulter

by aek＠bitsavers.org

http://www.drj.com/articles/spr99/poul.htm "Tom Poulter graduated from Stanford University with a BS degree in Physics and has been BTI?s CEO for 30 years. Prior to co-founding BTI Computer Systems, Tom was employed at Hewlett Packard designing a signal conditioning product line & as Systems Product Manager for HP?s bundled computer systems including HP?s first timesharing system." Sounds like a good guy to chase down, both for BTI material and 2000 stuff, esp since HP has opened up the sources, but didn't actually have any of the early software.

17 years, 3 months

BTI 8000

by aek＠bitsavers.org

In Aug, 2004, Jim Battle wrote: > Speaking of core memory, I used to work for a company that was still > shipping core-based systems in 1985, when I first joined them right out > of college. > > The machine was the "BTI 8000", made by BTI Computer Systems, based in > Sunnyvale, CA. I worked there for only a year, but I have some > recollection of the machine. I turned up a brochure and technical summary last night, scans up under http://bitsavers.org/pdf/bti

17 years, 3 months

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test-drb January 2008