test-drb July 1998

test-drb@ccmp.vtda.org

154 participants
898 discussions

by buck_c＠polygon.com

The reply-to got me. My previous post to John was intended to go directly to him, not to the list. I failed to notice the automatic reply-to that sent it to the list as a whole. "Sorry - my bad" -- J. Buck Caldwell Engineer - Technical Support - Webmaster Polygon, Inc. email:buck_c@polygon.com phone: (314) 432-4142 PO Box 8470 http://www.polygon.com/ fax: (314) 997-9696 St. Louis, MO 63132 ftp://ftp.polygon.com/ bbs: (314) 997-9682

26 years

Hey, English blokes...what's an Apricot?

by franke＠sbs.de

> [8089] >>> (very fancy DMA chip). >> Thats like naming the Newton a fancy post it thing. The >> 8089 was a full featured CPU, just with an special >> command set suited for I/O operations. Anything from > True. I've got the 8089 data sheet, and a 3rd party '8089 I/O processor > handbook', and it is indeed a coprocessor. However, it's normally used > (and it's used in the Apricot) as a DMA controller, so it's best to think > of it that way, for all it can do a lot more. > It's a lot nicer than the 8237 used in the IBM PC. For one thing it > correctly handles the 20 bit address bus, so there's no problem with > crossing 64K boundaries. For another, it can monitor a Data Ready flag on > one port, and transfew data when the peripheral is ready. No need to have > DMA channels in the PC sense. >> serial I/O via disk I/O up to code translations could >> done in a very smooth and genuine way. > Howver the Apricot has a normal serial chip and disk controller, and only > uses the 8089 for DMA. Maybe I used the wrong words - poor english language skill - Of course a regular Serial I/O chip is still needed, the 8089 has no serial (or what ever) I/O of its own. But instead of the main CPU, the 8089 will respond to all requests for data transfer - shure, you could use two DMA chanals for input/output data, but in difference to an ordinary DMA the 8089 could also handle the status lines and drive a non hardware protocoll - from xon/xoff up to HDLC. Same for any other kind of I/O hardware, not only serial, since the logic is software not hardware. Gruss H. -- Ich denke, also bin ich, also gut HRK

26 years

Amiga 2000

by maxeskin＠hotmail.com

I just pulled an Amiga 2000 (I don't think it's >10 yet) from the trash. It didn't come with anything else, just the system unit. I looked it up, and I pretty much came up with the specifications. COuld someone tell me a little more about it? What kind of video can I use with this? All it has is a composite RF jack. Also, are the keyboard and mouse PC-compatible? ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years

PET 2001

by MPritchard＠EnsembleStudios.com

>The case is made of bent sheet metal so you don't want a PET 2001 dropping >on your head. I had a CBM 8032, which when a shelving unit collapesed in my garage, fell from a height of 7 feet onto the hood of my car. The hood was torn up, and the 8032 had hardly a scratch, not even the tube.. and still worked fine. -Matt Pritchard Graphics Engine and Optimization Specialist MS Age of Empires & Age of Empires ][

26 years

PET 2001

by jolminkh＠nsw.bigpond.net.au

Sam Ismail wrote: >Could someone please describe the features of a PET 2001 for me? Thanks. > > What is this, some sort of trick question? 8" screen chicklet keyboard tape drive built in, to the left of the keyboard Hans

26 years

Stuff for trade in UK

by mark_k＠iname.com

Hi, I have some junk which I would like to trade for other junk... - Two Wangtek tape streamers. One is 5125EN, the other 5099EN24. These are not- quite-SCSI devices; they require the correct PC interface cards -- PC-36 for the 5099EN24, and probably the 5125EN too. I don't have the interface card. I believe they work; before I figured out that they are not SCSI, connecting them to a SCSI controller allowed me to rewind tapes, at least - Commodore PET 8050 disk drive, in bits. I took this apart years ago to clean, and forgot how to put it back together again. Never had the right cable to test it out anyway. Could be useful for spares if you already have one of these drives. I would like to get hold of a Wangtek 5150ES or 5525ES tape streamer. Or make a suggestion. I live in Wiltshire, England. Bye, -- Mark

26 years

Amiga 2000

by maxeskin＠hotmail.com

No, this is just a 68K, no boards of any kind, just the floppy drive >You didn't mention what kind of processor you've got in the system or what >kind of boards it has. The stock is 68000, but it might have a 68020 or >68030 on an accelerator board. Do you have a Hard Drive controller? > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com

26 years

Overhyped Innovations (was Re: OS's In ROM's (was: Re: Mac Classic prob (was Macintoshes..

by sinasohn＠ricochet.net

Sorry to reply to such an old message, but... At 11:28 AM 6/27/98 +0300, you wrote: >>BTW, I enjoy collecting over-hyped innovations that never quite caught on >>in the way they were supposed to: Bubbles. Pen-based computers. Touch >>screens. Wireless networks. Bob. MSX. Robots. AI. Home automation. >>The Z8000. The iAPX432. Parallel processing. Voice recognition. Two things I have to debate here... First, pen-based computers haven't yet caught on at the consumer level (corporate/specialized use is another story -- ask your UPS guy) but the technology is about to: The Cross Pad. (Put your pad of paper on this clipboard-type thingie and take notes. Go home and upload them to the computer.) I described it to a CPA and his eyes lit up like a kid at christmas. Voice-recognition isn't commonplace yet (again, in the consumer world) but it will be. --------------------------------------------------------------------- O- Uncle Roger "There is pleasure pure in being mad roger(a)sinasohn.com that none but madmen know." Roger Louis Sinasohn & Associates San Francisco, California http://www.sinasohn.com/

26 years

Paper tape anyone?

by jfoust＠threedee.com

At 01:25 AM 7/7/98 -0700, Sam Ismail wrote: > >Anyone know where I can get a supply of ASR-33 punch tape? I've got a dozen-plus antique rolls that I got from someone on the Greenkeys RTTY mailing list, if you just need a pair. If you search the net for "paper tape", you'll find several suppliers to the computer-controlled machining market, with options for paper tape, mylar tape, oiled, etc. I've said it before, the Greenkeys list needs to meet the classic-comp list. Who doesn't want an ASR-33? :-) Sure, the RTTY people deal with both Baudot and ASCII-based machines, but they're dumping stuff left and right, due to these greybeards cleaning house to move into a condo or a Winnebago. - John

26 years

S-100 computers & peripherals available - interested? (fwd)

by kevan＠heydon.org

I said I would forward this on to interested people... Contact Art directly if you are interested. Note the contact before date of 7-10-98 so you will have to act quickly. -- Kevan Old Computer Collector: http://www.heydon.org/kevan/collection/ ---------- Forwarded message ---------- Date: Mon, 6 Jul 1998 18:44:42 EDT From: JARTART(a)aol.com To: collector(a)heydon.org Subject: S-100 computers & peripherals available - interested? I have to part with Vector Graphics System B computers, working with documentation and top of the line Malibu printers and Morrow Design harddrive (25MB) add-ons. All circa 1978+. Are you interested? Please contact me before 7-10-98. Art Jensen (800)666-JART e-mail = JARTART(a)aol.com

26 years

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test-drb July 1998