test-drb June 2004

test-drb@ccmp.vtda.org

281 participants
616 discussions

Wanted: M9312 ROMs (data i/o help needed)

by rigdonj＠cfl.rr.com

(1) I have a 29A manual but there's no device codes in it. The codes are in the manual for the particular plugin that you're using so you'll have to tell us which one you're using. (2) I think I have a 29B manual but I'll have to look for it. (3) I didn't think the 29x programmers could program Bipolar PROMs but I'd be happy for someone to prove me wrong! (4) FYI Just because the PROMs are 82S131, Am27S13, 63S241, 74S571, etc don't think that they're all the same. They may be interchangeable in a read-only operataion but they're programmed very differently. You MUST have the proper settings and adapaters for the PROM that you're using. Joe At 06:56 PM 5/27/04 -0700, you wrote: >I made images of all my roms, but the burner I used is ancient and >non-standard so they likely won't help, I want to read them with >something a little more standard, a DATAI/O 29b... has anyone got the >"device code" for the 82S131? > >thanks, > Pavl_ > >> sure I'll host it. I'll just put it under www.classiccmp.org/M9312 >> >> Someone just give me the files! >> >> Jay >> ----- Original Message ----- >> From: "John A. Dundas III" <dundas(a)caltech.edu> >> To: "General Discussion: On-Topic and Off-Topic Posts" >> <cctalk(a)classiccmp.org> >> Sent: Wednesday, May 26, 2004 6:31 PM >> Subject: Re: Wanted: M9312 ROMs >> >> >>> I agree with Fred: I'd like to see an electronic library of 9312 >>> bootstraps that we could all share and download as necessary. I >have >>> a /84 and /70 that I'd like to get images for (TK50, etc.) that I >>> don't already have. Burning an EPROM seems like an easy way to >go. >>> >>> Any images already archived? >>> >>> Any volunteers to host a collection? >>> >>> John > > > >

21 years

8" hard sectored floppies

by pete＠dunnington.u-net.com

On Jun 3, 10:39, Dwight K. Elvey wrote: > There is a difference between single and double > density that is related to the position of the index hole. Are you thinking of the different position of the index hole in 8" disks? That differentiates single-sided from double-sided, not densities. > My > understanding is that unlike the 5-1/4 disks, the 8 in. media > is the same for the single and double density, just higher > quality. In fact, I punch a new index window in some of my > double density 8 inch floppies and I've been using them, with > no troubles, as single density. > The 5-1/4 disk are a different story. Single/Double don't mix. Sure they do. Same coercivity. There might be a difference in quality on early ones, but barring flaws in the emulsion coating, they're interchangeable, and you can always use DD as SD. It's single/double density and high density that are different. -- Pete Peter Turnbull Network Manager University of York

21 years

8" hard sectored floppies

by dwight.elvey＠amd.com

>From: "Fred Cisin" <cisin(a)xenosoft.com> > >> >Unfortunately, the 765 does a "reset" of the chip whenever it sees the >> >index. It can handle NOT having an index hole (AFTER formatting), >> >but excess holes will keep it from working. > >On Thu, 3 Jun 2004, Dwight K. Elvey wrote: >> Hi Fred >> When I first got my first PC, I didn't have anything >> but hard sectored disk that I'd used on my H89. I made >> a foil disk that I put in with the disk to get around this >> problem for formatting. It had a large hole that most >> of the time only exposed one index hole. Placing it >> in the drive was tricky but with access to the top of the >> drive I made it work. >> Of course, I later bought a box of 360K disk but this >> trick did get me started. >> Dwight > >If you just use that for FORMATing, you could then disable the index for >all subsequent access, either by putting opaque tape over the hole in the >diskette jacket (won't work with some TEAC drives), or interrupting that >wire in the cable. Hi Fred I don't recall what drive it had but I just left the hole completely open after formatting and it worked fine for read/write. I don't believe anything cared how often there were holes, after formatting. As I recall, reading disk controller specs, there was an error that could happen if a sector wasn't found within so many revolutions. I don't think my machine used this feature. Dwight

21 years

8" hard sectored floppies

by pete＠dunnington.u-net.com

On Jun 3, 13:34, Fred Cisin wrote: > I don't think that 3M ever made 3.25" (Dysan and Brown) > or 3.25" floppies. Nor 2.5" (TDK and Sony) or Zip disks (Iomega and Fujitsu), as far as I know. -- Pete Peter Turnbull Network Manager University of York

21 years

8" hard sectored floppies

by dwight.elvey＠amd.com

>From: "Fred Cisin" <cisin(a)xenosoft.com> > >> > >Hard and Soft sectored disks are never compatible. >On Thu, 3 Jun 2004, Tom Jennings wrote: >> > Ah, never say never, my friend! ;-) >> I believe the ubiquituous NEC 765 (et al) does its "index" on read by >> scanning for the 0th sector ID (which is 1 :-) The index hole is only >> needed for formatting, and that only for compatiblity. > >Unfortunately, the 765 does a "reset" of the chip whenever it sees the >index. It can handle NOT having an index hole (AFTER formatting), >but excess holes will keep it from working. ---snip--- Hi Fred When I first got my first PC, I didn't have anything but hard sectored disk that I'd used on my H89. I made a foil disk that I put in with the disk to get around this problem for formatting. It had a large hole that most of the time only exposed one index hole. Placing it in the drive was tricky but with access to the top of the drive I made it work. Of course, I later bought a box of 360K disk but this trick did get me started. Dwight

21 years

8" hard sectored floppies

by melamy＠earthlink.net

you forgot Wabash and Elephant disks... at least I have those laying around the house... best regards, Steve Thatcher -----Original Message----- From: "Joe R." <rigdonj(a)cfl.rr.com> Sent: Jun 3, 2004 5:09 PM To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk(a)classiccmp.org> Subject: Re: 8" hard sectored floppies At 01:08 PM 6/3/04 -0700, Grumpy Ol' Fred wrote: >> > I'm almost sure I've seen a 16 hard sectored 8 inch disk someplace. > >On Wed, 2 Jun 2004, Don Maslin wrote: >> I suppose that is possible, Dwight, but it may be a surprise to 3M! > >Although I do not have any examples handy, it would not surprise >me at all to find out that there exist SOME media that weren't >available from 3M! Let's see; IBM, Tektronix, Verbatim, Memorex, Digital, Maxell, Intel, Centech, Radio Shack, Data Systems. That's just some that I have laying around the house. Joe

21 years

HP 4952A Software

by kennj＠telusplanet.net

Guess I'll add my two bits worth... To get the terminal emulator working you need to (and I quote from the manual): 1. Insert the HP 4952A PROTOCOL ANALYZER UTILITY Disc into the HP 4952A disc drive. 2. Press the "more" key unitl <Mass Store> key appears. 3. Press the <Mass Store> key. 4. Place the cursor on "TERM" and press <Load>. 5. Press <Execute> key to load Async Terminal Emulator application program. 6. If the application loaded properly the HP 4952A display should be as follows: <insert picture of initial splash display here> After the application is loaded, a new key appears in the top-level menu (by pressing the <more> key) called <Terminal>. This key accesses the Terminal Setup menu where the terminal parameters can be set and the emulator run. That utility disc also has a "copy disc" utility that can copy entire floppy discs, but your 4952A requires the extended memory option (option 002) to be able to do that. The original floppy is copied into memory, then later copied from memory to the target disc. The format on disc is LIF, HP's standard floppy disc format back before MSDOS and FAT formatted floppies dominated the world :-) Ordinary 1.44MB IBM formatted 2HD floppies work just fine as target discs. I own two discs for the 4952A: - Utlity disc containing sample menus and data, copy disc application, and async terminal emulator application. This disc was originally included with the HP 18260A interface pod. - HP 18621A SNA Analysis disc. Anybody out there have any of the other cool discs? ... - HP 18263A 3270 Installation and Maintenance Software - HP 18264A X.25 and SNA Level Link Level Statistics - HP 18265A DDCMP Analysis - HP 18266A Enhanced X.25 Analysis Kenn have the - power up the 4952A - insert the appropriate floppy into the drive - press the "more" key until the "mass store"

21 years

paper tape replacement

by jwest＠classiccmp.org

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=11805&item=381854314… Thought some folks might be interested. Jay --- [This E-mail scanned for viruses by Declude Virus]

21 years

Nascom 2 cooling fan(s)??

by julesrichardsonuk＠yahoo.co.uk

Calling on the wisdom of list members here... How warm does a) the PSU and b) the logic circuitry get in a Nascom 2? I'm currently in the process of dismantling the enormous wooden box which my acquired Nascom 2 came in and replacing it with a smaller old wooden box with a hinged lid. Boards (I have CPU board + memory) will be mounted vertically, likely at one end of the new box. Transformer + PSU will be at the opposite end. The machine as I got it had no fan in it, but then the horrible plywood crate was almost big enough to live inside :-) It just had some ventilation holes in the corner where the transformer was. I'm not sure whether I could really do with a fan blowing air over the PSU, or even two, with one on the PSU and one on the card stack. Or maybe passive cooling of PSU + cards is sufficient... Thoughts welcome. If I'm going to go the fan route I should really find period fans I suppose! Incidentally the new box is about 14" wide x 10" deep x 14" high, with a hinged lid, and large iron hinged handles at either end. All tounge and groove wooden construction, using particularly soft wood of unknown origin. In particularly ornate black script it reads "3" on the front and "51 to 79" and "15 x 12" on one side. I have no idea what it was used for, but put the age at probably around 1950 (possibly earlier). It may well be military, Post Office, or railways I imagine. Anyone? I'll reproduce the black lettering on the finished machine I think even though I have no idea what it means :-) The metal hinges and other fittings have been in a electrolysis bath for the last day and are looking particilarly nice. I'll keep the ports all round the back of the box, then if I can somehow build a slimline case for the keyboard then there'll be *just* enough room to stow the keyboard inside the box at the top and close the lid :) cheers Jules

21 years

What's the best way to cut a PB book apart for scanning? Millenium Analyzer

by rigdonj＠cfl.rr.com

I found my Millenium MicroSystem Analyzer manual while searching for the manual for the Brikon 723 FD tester. I thought I'd scan it but it's bound into a paper back book. What's the best way to cut it apart so that I can scan it? My scanner has a feeder and it's th only way to scan something. Joe

21 years

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test-drb June 2004