test-drb June 2001

test-drb@ccmp.vtda.org

273 participants
682 discussions

Who needs or wants some C64 computers, 1541s drives, 1541 II drives?

by claudew＠videotron.ca

Hi Still cleaning up here (seems I do this everyweek now) and noticed I have way too many.... C64s (tan version) with power supply 1541 Disk Drives 1541 II Disk Drives with power supply C64 Programmers reference guides I threw out all the bad shape ones, gave some away and still have way too many...about 4 of each... All of these are clean and work. They could be going to dump this week if no takers but it's ashame cause they are fine shape... See more of the stuff I have to giveaway/trade: http://computer_collector.tripod.com or http://members.tripod.com/computer_collector/ Claude

23 years, 1 month

Motorola 88000

by ken＠seefried.com

Interesting architecture. Brain dump follows; forgive inacurracy due to bit-rot in the brain. The 88000 was Motorola's' stab at RISC technology, after deciding (well, being told by customers), that there wasn't much interest in follow-ons to the 68040 (look how few 68060 adopters their were, relatively speaking). It came out in 1988, placing it late compared to the rest of the 1st generation of commercial RISC. Harvard architecture, 32 GP registers, register renaming, pipelined w/ interlocks, on-chip FPU, well defined co-processor interface and later on, superscalar & speculative execution. Later versions, as I recall, also had special bit manipulation instructions designed to manipulate pixel data (distant shades of Intel MMX) with seperate functional units to execute those instructions. All the right buzzwords, and it had very competative integer & FP benchmark numbers (I recall ~17MIPs & ~20MFLOPs @ 20MHz for the 88100, depending on speed). I know they ran at 16.67MHz, 20MHz, 25MHz & 33MHz; not sure about other speeds. It started life as a fairly typical multi-chip Motorola design, which certainly impacted manufacturing costs. There was a core CPU chip (the 88100), then some number of 88200 or 88204 CMMU chips, which provided 16KB or 64KB cache, respectively, and an MMU. Cache had split I+D buses, with a given chip dedicated to one or the other bus. One could use 0 to 8 CMMUs, giving up to 256K+256K I+D cache per CPU. AFAIK, 2 was the most common number, and 3 or more was rare due to cost. I know the BBN TC2000 used 3 per CPU, which gave 32KB I & 16K D cache (or vice versa). I can't recall off the top of my head a machine that used more than 4, though there certainly were some. Someone once told me that an Omron Luna used a single 88200 per processor. I've never seen one, so I can't confirm, nor would I know if it was caching instructions or data. Many folks used just the 88100 CPU for embedded applications. NCD built a bunch of 88k Xterminals sans CMMUs, for example. The later (and much faster) 88110 processor integrated MMU & cache (8k+8k I+D) on chip, much like what happened between the 68020 and the 68030 (well...sans cache to be pedantic). They also added more functional units. There was an 88120 that was planned but never saw the light of day. There was plug-and-play hardware support (e.g. hardware cache coherency mechanism) for up to 4 way multiprocessing, so you saw a lot of 2- and 4-way multis. Spinlocks, etc., were real easy to implement on the 88k. Motorola had a pretty strong ABI spec for SVR3 & SVR4 (88Open), which would have been useful had the chip been more successful. Not that I want to provide the canonical list of 88k machines, but I'm guessing DG sold the most 88000 machines. I personally used a Tektronics XD88, which was a beast performer at the time. Encore built a big 88k multi, as did BBN. There were a lot of MVME-based systems, with various badges. There are a bunch of rare/odd machines as well (the Omron Luna is significant because of it's role in developing Mach). As one poster pointed out, Apple considered using the 88000 (including producing prototype hardware and partially porting MacOS), as did NeXT. In the end, Motorola decided (for many reasons that I won't begin to untangle) to back the IBM PowerPC chip. The rest, as they say, is history. ObObscureHistoricalFootnote: DG apparently ported DG/UX to the SPARC at one point. To return the favor, Sun ported Solaris 2.5 to the PowerPC (the chip that replaced the 88000). Doubtful anyone ever purchased either product. That's how I remember it...I could be wrong... Ken Seefried, CISSP

23 years, 1 month

Nobody wants an HP-150?

by bills＠adrenaline.com

I'll try one more time... It's fully functional, including the touch screen. It has 640K of RAM (256K integrated + 384K on an expansion board). Best offer.

23 years, 1 month

Altair 8800 front panel lamps

by dhquebbeman＠theestopinalgroup.com

> From: Douglas Quebbeman <dhquebbeman(a)theestopinalgroup.com> > > >I live for the day when Outlook or Exchange allow me to > >simply establish a filter that strips all incoming mail > >of any HTML.... > > I live for the day I can strip OE for a real mailer not the cartoon thing > MS pushes off. My kind of mailer is Vax Mail. Nice simple command > line text mailer. I'm surprised that Elm and Pine haven't been ported to Win32 Console apps... -dq

23 years, 1 month

FOR TRADE...: APPLE IIGS Official Pubs. BOOKS reference Harware/Software manual set series (last time - they really gotta go...help please...)

by claudew＠videotron.ca

Yes, I have posted these before, bear with me please...its the last time... Well I have stumbled upon this box full of books again that I have offered a few times here. A few trade offers fell through but now I hope to get these to a good home...they must go now as part of my Spring cleaning 2001 project (now extending into summer 2001...) I would like to trade these - I dont use ebay to buy or sell so they wont go there. Id like to get something in return because I paid a bit of $ for these when I got them as part of a Apple IIgs bundle.... They are a box full of all the reference manuals for the IIgs hardware and software, I think 9-10 hard/softcover books in all. Toolbox reference vol 1,2,3...programmer intro to the Apple IIgs, etc... See a pic at : http://members.tripod.com/computer_collector/iigs/iigsbks.jpg I would except a trade for vintage stuff (home/hobby 8 bits/16 bits) not too common or better yet : as recent as possible SUN or SGI computers/equipement. Thanks Claude http://members.tripod.com/computer_collector

23 years, 1 month

(no subject)

by mcguire＠neurotica.com

On June 7, Brian Roth wrote: > Great! A couple of former DEC brokers I contacted did not even know what a > RV20 was. Shipping might be a bear though as I believe the weight will be > similar to and RL drive. Oh, that won't be a problem. I've shipped RK drives...as in RK07. 8) -Dave McGuire

23 years, 1 month

Free stuff

by broth＠heathers.stdio.com

I am currently reducing my collection to "DEC only" and in the coming weeks(months) will be posting some giveaways. I have bunches of everything to get rid of. I will give precedence to DEC related trades and then just ask for shipping charges after that. First off I need to know if anyone is interested in Data General stuff. I have a couple of box's of manuals and software. I believe there might be some early NOVA manuals in the stack. I also have a dual 8" rack mount floppy coming in. I would like to see these go to an active DG collector. I currently have 7 Intel MCS -80/85 Family User manuals in new condition. Free to anyone. A few bucks for postage at your convienience would be nice but not necessary. Like I said I have a lot of stuff and the shipping charges are going to add up after a while. Brian. -- Brian Roth - System Administrator www.webwirz.com - Old Computer Repository Preoccupation is my main occupation.....

23 years, 1 month

DEC Board, need help with info on...

by mcguire＠neurotica.com

On June 7, Geoff Reed wrote: > The 29-28310-01 is off a digital label. > > also on the board are > > 90-0000308-001 > and > 91-0000308-001-01 > > (C) 1989 Corrolary INC. > > it's an ISA board with an 80186 2 zilog z0853004PSC's an AM9517A-5 and a > boatload of pals on it, it looks kind of like a multiport serial card it > has mac looking ports on it that look just like the serial ports on a > macintosh or sparc IPC/IPX. (Mini-din8?) sorry, my memory is trashed this > am... > and i might be able to throw a picture online of it soon.... Hmm...Z8530 is a [very nice] dual-channel serial I/O chip and the Am9517 is a DMA controller...which, rather decidedly, makes it a high-speed multiport serial card. The Z8530 is capable of synchronous and HDLC/SDLC operation as well, up to 2mbps if memory serves. I have no idea what this particular board was built to do, but it could even be something fancy like that. -Dave McGuire

23 years, 1 month

No subject

by mcguire＠neurotica.com

On June 6, Brian Roth wrote: > Any chance that someone may have an DEC RV20 worm drive they would like to > part company with? I just received some carts with software I would like to > read. Also looking for a keyboard for a VAXmate. A surplus house that I deal with now & then has had one on the shelf for some time. I'll head over there and ask 'em how much they want for it. If their price is reasonable for you I can go grab it and ship it to you. -Dave McGuire

23 years, 1 month

DEC Board, need help with info on...

by mcguire＠neurotica.com

On June 6, Geoff Reed wrote: > 29-28310-01 IC8X4 MULTIPLEXOR BOARD > > I don't know if this falles under the classic here, but any info I can get > on this would be great! compaq has been less than helpful on telling me > what it is.... Are there any other numbers on this board? Can you up a photo of it? -Dave McGuire

23 years, 1 month

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test-drb June 2001