test-drb September 1999

test-drb@ccmp.vtda.org

160 participants
610 discussions

by mcguire＠neurotica.com

On Wed, 15 Sep 1999, Jim Strickland wrote: >If it lands at the >>> prompt, try typing boot. I *think* the device name would >probably be DUA0 for that controller, but if I'm wrong I'm sure someone will >correct me. So if boot doesn't get it, try boot dua0. I think. Geez it's been >a long time since I had my hands on a microvax II. dua0 is indeed correct. >When I was a grad school sysadmin, we used a 13mb uVaxII with a pair of ESDI >disks (350 megs each, I think) as a file server for our office. Ironically >of all the vaxen I worked on at that site, that box is one of the few that's >still around, since the terminal server boots from it. :) I'm waiting and >salivating for when the University puts all those vaxen in the surplus auction >or (I hope I hope) takes me up on my offer to haul them all away for free. >They've got a 4000/500 that was brand new when I worked for them that I *want*. *drool* a 4000/500!! Now that *is* fast by today's standards. I've got a pair of 4000/400s that I adore. They are *sweet*. -Dave McGuire

25 years, 3 months

HP 2114 on ebay

by wsmith＠gj.com

>>> Roger Merchberger <zmerch(a)30below.com> 09/15 3:31 PM >>> Rumor has it that James Willing may have mentioned these words: >The offering can be found here: > >http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=160802545 > >Looks like the eBay systems are running behind (yet again) in processing >info on completed auctions. The final bid shows as $455.01 and it does >not appear that there was a reserve. Although, normally an ebay auction ends at the exact time that it's posted, either 3, 5, 7 or more days later. However, this auction ended 5 days 3 hours, 22 minutes and 52 seconds after it began... How could that be??? Just a thought, Roger "Merch" Merchberger ***According to eBay: "Ending Your Auction You can use this form [omitted here] if you want to end your auction early. But remember, lots of bidders wait until the very last minute to bid they're trying to avoid being outbid! So you may lose a potential buyer by ending your auction early. If you are ending the auction because you no longer wish to sell your item, you must cancel all bids on your auction before it ends. If you do not do so, you are obligated to sell to the high bidder." Wayne Smith ! ! !

25 years, 3 months

Central Point Option floppy controller

by morrison＠t-iii.com

I wonder if one could use a PIC chip to do it. They'll do 20Mhz, and they like bits. Neil Morrison email:morrison@t-iii.com > -----Original Message----- > From: ard(a)p850ug1.demon.co.uk [SMTP:ard@p850ug1.demon.co.uk] > Sent: Wednesday, September 15, 1999 12:35 PM > To: Discussion re-collecting of classic computers > Subject: Re: Central Point Option floppy controller > .......... > But that doesn't mean that's the only way to read such disks. The format > (as in just what pulses appear where on the disk) is pretty well > documented. It wouldn't be that hard to use some random logic or an FPGA > to make a disk controller that read apple disks and transfered bytes to > whatever host you wanted to use. > > I would guess the pulse rate is going to be low enough that modern CPUs > could read the pulse-stream off the disk directly and decode it. I'm not > going to try it, but I would be very supprised if it couldn't be done. > > > -tony

25 years, 3 months

Central Point Option floppy controller

by morrison＠t-iii.com

And what you never had sex with! NM > -----Original Message----- > From: Don Maslin [SMTP:donm@cts.com] > When using the card, the native FDC is only used to > > select the drive and seek to the desired track. > > > > That depends on what the meaning of 'is' is :) > > > - don >

25 years, 3 months

COBAL for TRS-80

by morrison＠t-iii.com

It isn't NM > -----Original Message----- > From: Russ Blakeman [SMTP:rhblake@bigfoot.com] > Sent: Wednesday, September 15, 1999 2:21 PM > To: Discussion re-collecting of classic computers > Subject: Re: COBAL for TRS-80 > > Hopefully it''s listed as COBOL and not COBAL or not too many people will > locate the auction without this info. > > Phil Clayton wrote: > > If anyone needs COBAL for TRS-80 Model-1 or Model-3 computers, > I have listed it on eBay its currently at only $1.25 plus shipping.. > > <http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=163084785> > Phil.. > >

25 years, 3 months

Reading TRS-80 discs (was RE: Archiving old discs...)

by allisonp＠world.std.com

<There are some UMC parts that have the disk controller + data separator + <precompensation, etc on the same chip. At least some of those claim to do <single density in the data sheet, but fail to work properly in practice <(the failure is a little odd -- the chip will find the sector and it will <attempt to read it. But the last byte will be mangled, something like that) One of my hacks is to use ISA boards like Hard disk controllers, FDCs and others as "modules" for other busses and I've used boards with UMC supper chips for standard modes including FM with ease. One of the problems is most people don't know much about programing 765 cores. <There are no pins for connecting an external data separator either. Not needed. You have to set up the auxilary registers for the right clock rate and precomp for FM. <I don't know if you can kludge them to do single-density. Maybe decode <the FM data externaly, re-encode it as MFM and fiddle the data rate :-). <A heck of a lot of work, though. Not required. <I assume that the UMC 8272-clone (there is one, just a plain 8272 with no <extra logic) will handle FM with the right external data separator, though Yep an 9216 or similar works though the counter based design used on DTK and some of the older compaq boards works fine if the clocks are correct. Some of those ISA-8 boards using 765A or 8272 (and clones) are easy to mod for most any data rate and mode. The lines to the chip for those functions are (MFM, RDD, RDclk, VFO, WDD, WClk, WREN, PS0, PS1) and should be easy to follow on some of thse boards. The 9216 or 9229 can do all modes and the only thing remaining is to maybe change the crystal. Allison

25 years, 3 months

Central Point Option floppy controller

by morrison＠t-iii.com

You need Copy2PC to run it. Neil Morrison email:morrison@t-iii.com > -----Original Message----- > From: Jeffrey l Kaneko [SMTP:jeff.kaneko@juno.com] > Sent: Wednesday, September 15, 1999 6:43 AM > To: Discussion re-collecting of classic computers > Subject: Re: Central Point Option floppy controller > > I have one of these. Does anyone know how it's hooked up? > Anybody got the S/W for this thing? Supposedly, you can > write any format on the planet with this thing. I've > heard that it won't run i faster, newer machines. Does > anyone know what the limitations are? > > Jeff > > On Wed, 15 Sep 1999 01:32:56 -0700 Mike Ford <mikeford(a)socal.rr.com> > writes: > > Given the current discussion, has anyone looked the Central Point > > "copy > > card" floppy controller over? > > > > I am looking at one of mine right now, and to my limited "PC" eyes > > it seems > > fairly normal. Barely the length of a short ISA slot, with fingers > > on a > > edge connector as well as a set of header pins for the floppy drive > > cable. > > It has one main chip: > > > > Transcopy 3 c CPS > > TC19GO32AP-0036 > > Japan 8819EA! the ! could be just a vertical line. > > > > Its about 8051 sized, maybe 60 pins. There is a 48 khz crystal, and > > a 1987 > > copyright. Two sets of jumpers seem to select between PC/XT and > > AT/Compaq, > > another set looks like DMA1 or DMA2. > > > > Remaining chips are a LS245 to the ISA bus, a 7406 by the PC/XT > > jumpers, > > and a 8812S UM8326B next to the crystal. > > > > This is one of the cards I check every old PC I see for. > > > > > > ___________________________________________________________________ > Get the Internet just the way you want it. > Free software, free e-mail, and free Internet access for a month! > Try Juno Web: http://dl.www.juno.com/dynoget/tagj.

25 years, 3 months

Homeworkers Needed!

by morrison＠t-iii.com

I suspect it's boiler plae. Neil Morrison email:morrison@t-iii.com > -----Original Message----- > From: Peter Joules [SMTP:peter@joules0.demon.co.uk] > Sent: Wednesday, September 15, 1999 1:21 PM > To: Discussion re-collecting of classic computers > Subject: Re: Homeworkers Needed! > > In article <530ABCFF6BB4D111A08400609780AB1601C1EEDE(a)hobbit.t-iii.com>, > morrison(a)t-iii.com writes > >If this was a complaint about a particular junk e-mail, we appear > >to have received as many complaints as was necessary to take > >appropriate action and do not require any further reports to > >document this incident. > > Am I cynical or does this mean that they aren't interested and so just > send this out to make it look as if they are dealing with their > spammers? > -- > Regards > Pete

25 years, 3 months

Apple ][ in an ISA card (was Re: Central Point Option floppy controller)

by ethan_dicks＠yahoo.com

--- Innfogra(a)aol.com wrote: > If I remember, someone marketed an apple II on a card that fit in an ISA PC. > I don't remember how the drives hooked up but I do remember the software that > > came with it included Central Point's drive conversion program. It would read > > Apple at the very least. I had two of these NIB at one time. > Anyone else know of these? > Paxton Was that a "TrackStar" card? I have a complete Apple ][ on an ISA card, but I've never even installed it in a machine. It looked interesting, but I never really needed to use it. -ethan === Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com

25 years, 3 months

Reading TRS-80 discs (was RE: Archiving old discs...)

by allisonp＠world.std.com

<It's not that hard to replace a non-standard data separator with a 9216 <or a homebrew design, or.... Or jumper the pins of the 9216 for the correct mode. Since the 9216 is only for the read side you still have to tweek the write and precomp logic. The 9229 does both sides (read and write). It's pretty trivial to do this even with SSI TTL. <But you can only do this if you have access to the signals you mentioned. <With the all-on-one-chip devices that are common on PC I/O cards you <don't. And since PCs always use double-density disks, a lot of these <chips were not properly tested in SD (FM) mode. True, you already have the resources. This is a matter I have experince with over 19 years, 19 of wich are with the 765 and heirs as I started as a product engineer with NEC before the 765 was rolled out. What I have for DOCs is, uhm, better than average. The last byte mashed in the UMC is also common to most 765s and is related to DMA read/write timing such that if you delay the DMA request by about 1-3uS (several FDD bit times) in FM mode it should work fine. In FM the internal clocks are slower and the transfers internally take longer. Some of the super parts compensate for this or there luck. It's part of the reason why when you write a command sequence or read status there can be a significant delay (12us for the 765A) as the clock runs the internal processors (one for parallel ops and one for the serial ops). OH in FM mode DTL byte in the command is significant (for MFM is filler). Allison

25 years, 3 months

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test-drb September 1999