test-drb September 2001

test-drb@ccmp.vtda.org

256 participants
661 discussions

by optimus＠canit.se

First of all, I'm lagging far behind with my mail reading, and I don't think I've managed to thank those who provided me with the necessary help for cracking my VAXstation. Now I'm fumbling around in VMS. What a queer system, I'm totally lost, but some manual reading will probably provide necessary orientation. Anyway, thank you, Jochen (?) et al. Now, I've got three functioning VMS 5.5 disks. And we've got a MicroVAX 3100 without system disks. Would it be possible to just connect one of my spare disks to the SCSI bus on the ?VAX or would the system crash and burn when it couldn't find any graphics hardware and perhaps not the exact same peripheral systems (these are disks from a VAXstation 3100, so they're close relatives)? -- En ligne avec Thor 2.6a. "Real life is full of idiots, and tons of ads. I don't see how IRC is any different, other than a lot more people want to have sex with you." -- m3000

22 years, 10 months

LCD repair

by dhquebbeman＠theestopinalgroup.com

To whom were you replying? I'd posted about looking for an LCD screen for my Sharp laptop a while back... Unfortunately for me, mine has suffered fragmentation (it's physically cracked). Replacement is the only option... -dq > -----Original Message----- > From: Steven Spence [mailto:sspence@avimages.com] > Sent: Friday, September 21, 2001 7:43 PM > To: classiccmp(a)classiccmp.org > Subject: Re: LCD repair > > > Don't know if you found the problem with your lcd yet but I > am a tech on > such and if you carefully fub the glued ribbon cables feeding into the > lcd panel sometimes this corrects those lines otherwise you > might get it > repaired by one of the online lcd repair shops. > > Steven Spence >

22 years, 10 months

Free 8-inch floppies and drives, Wash DC area

by CLASSICCMP＠trailing-edge.com

Free, available immediately, in suburban MD just inside the I-495 beltway: Over a thousand used 8-inch floppies, mostly in plastic storage boxes, mostly with CP/M filesystems and SW. Also, some Shugart 8" floppy drives, very similar to the SA800 but requiring a little bit wider mounting space. Email me at "shoppa(a)trailing-edge.com" if interested. First to set up a pick-up time this weekend gets them all (no picking and choosing, you take them all!) Tim.

22 years, 10 months

Free Apple II (and //e and //c) stuff, DC area

by CLASSICCMP＠trailing-edge.com

Free to whoever wants to pick it up. I'm in suburban MD, just inside the I-495 DC beltway: Free Apple //c Free Apple II+ Free Apple Disk II drives Free random Apple docs and magazines Please E-mail me at "shoppa(a)trailing-edge.com" if interested. First person to set a definite pick-up time for this weekend gets them. Tim.

22 years, 10 months

Organization tips?

by technos＠nerdland.org

On Friday, September 21, 2001 9:56 PM, Paul Thompson [SMTP:thompson@mail.athenet.net] wrote: > On Fri, 21 Sep 2001, Dave McGuire wrote: > > > On September 19, Chuck McManis wrote: > > > So does anyone have a preferred way in which they organize all the > > > many > > > hundreds of bits of stuff you need when you are keeping older > > > computers alive? > > > > For storing stuff in boxes...I avoid cardboard nowadays...I've > > been > > replacing them with those plastic "tubs" that one can purchase at > > discount stores. They last longer, are waterproof, and more > > stackable. They've also considerably cut down on the dust level in > > the house. > > I have an Army surplus ammo case for my spare hard drives (filled > layers > of bubble wrap.) The thing is airtight and actually hisses from the > pressure change when opened after being kept closed for some time. > > I ran out of room in it and turned out some of my smaller capacity > drives > to normal storage. > > > -- Good idea. Myself, I use cases from IBM procs. Take the spacer foam out, fit 8 standard HD. For laptop drives leave the foam in, fit 20. Jim

22 years, 10 months

Organization tips?

by cmcmanis＠mcmanis.com

So does anyone have a preferred way in which they organize all the many hundreds of bits of stuff you need when you are keeping older computers alive? --Chuck

22 years, 10 months

Altair32 update

by rcini＠optonline.net

Hello, all: For those interested, I hit a major milestone this evening. After a momentary flash of brillance (which come too few and far between I'm afraid :-)) I made some minor tweaks to the code relating to diskette images. Then, I loaded up an image of CP/M 2.2 for the Altair and fired it up. Well, don't you know it works! I got CP/M to boot on the emulator!!! I now have to try Altair Disk BASIC and Altair DOS. It's dog slow and for some reason I can see CP/M console output but it doesn't appear to receive console input. So, I'm stuck at the "A>" prompt. I guess it's time to slow the front panel updating again or try to optimize the processor code. I feel a 2.1 release coming... Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

22 years, 10 months

Intriguing proposal

by Antonio.Carlini＠riverstonenet.com

> Absurdly Obtuse wrote: > >Is it possible to put a Laserbus PCI Hose from an AlphaServer 8400 in my >VAX 7000? The concept boggles the mind. Also, does anyone know where I I don't know what the differences are between the TurboLaser bus (as in the AS 8400) and the Laserbus (on the VAX 7000/DEC 7000). If it works you will have the pleasure of writing some VAX drivers for PCI. Don;t forget that some LSB modules had Alpha-only firmware: I presume they had carnal knowledge of Alpha MMG data structures which are different on VAX. So just because it does not smoke when you drop it in the slot does not mean it is useful! >can find TXXX XMI/BI, EXXX Laserbus, and other reference numbers for >boards? For VAXBI, VAXft and XMI you can start here: http://www.stmarks.pp.catholic.edu.au/vax/ There are various "field guides" dotted around the net that cover Omnibus, Qbus and UNIBUS. I've got a list somewhere of LSB and FBUS stuff. Is there anything specific you wanted? Antonio

22 years, 10 months

CPU design at the gate level

by alan.pearson＠cramer.com

Tony Duell wrote: > I've not come across it, but if it stops with registers and > the ALU, I don't think I'd call it a 'good book'. > > A CPU can be divided into 2 parts. The Data Path (registers, ALU, the > multiplexers between them, etc) and the Control (instruction decoder, > microcode + sequencer, condition logic, etc) True, I don't recall covering much in the way of control logic - only very basic stuff like telling the ALU whether to add or subtract, plus implementing a few flags like zero and carry. Once we got to that stage they threw us at the 29xx series to look at microcoding, which was all the rage at the time. Unfortunately I've lost most of my college notes now, I guess I've moved too many times :-/ I've been looking for a replacement for the Thewlis book - can you recommend any which cover CPU logic from the basics of how to build registers out of gates up to instruction fetching & decoding? I'm also very keen to get hold of a book covering the bitslice processors (29xx), any ideas? I can't imagine there's anything left in print now, but with an author/title or ISBN I might be able to track down a second-hand copy. -al

22 years, 10 months

Practical Electronics and D. Bollen

by mranalog＠home.com

Hi, I'm looking for information about an author (and a series of magazine articles he wrote in the early 70's concerning analog computers) by the name of D. Bollen. The articles might have been published in "a popular English `do it yourself' electronics magazine called something like Practical Electronics". Does anyone have a near complete collection of Everyday Practical Electronics (EPE) Magazine? Maybe the magazine has an author's index. Can anyone think of the name another similar magaazine that fits this description? I've been told that these articles contain the "Full details" of my C180 english analog computer. Regards, --Doug P.S. If you CC me then I don't have to wait until tomorrow for your reply. :) ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

22 years, 10 months

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test-drb September 2001