test-drb February 2000

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test reply-to - please ignore

by west＠tseinc.com

testing the reply-to configuration. Please ignore

26 years

WD1770 help needed

by pete＠dunnington.u-net.com

On Feb 4, 11:43, Ethan Dicks wrote: > --- Pete Turnbull <pete(a)dunnington.u-net.com> wrote: > > The 1772 was designed to be a plug-in replacement. The main (only?) > > difference is in the programmed step rates. > > I am looking at a WDC-1772. It has 28 pins. Doesn't the 1770 have 40 pins? No, you're thinking of a 1790. 1770 and 1772 are both 28-pin devices. There's also a 1772-2 which is just a mask revision of the 1772, and a 1772-2-2 which can run faster. Ataris sometimes have the latter. > The standard 5.25" drives _do_ use GCR for all native formats, but the later > stuff (1570/1571) also do MFM for CP/M compatibility. The aforementioned 1581 > is a 3.5" device (~720K; the not-released 1591 was ~1.44Mb) and does have some > form of MFM-capable chip, AFAIK. You can read 1581 disks in other machines, > Linux included, I think. I didn't know that. Did Commodore machines use a standard controller to write the MFM, or did they use the same techniques as for the GCR? I know Amigas can read/write DOS disks, but they don't have any sort of standard controller. -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years

What's a WD2793A chip?

by ethan_dicks＠yahoo.com

In going through and sorting my piles of classic ICs, I ran across this Western Digital WD2793A chip. What is it? Thanks, -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years

WD1770 help needed

by ethan_dicks＠yahoo.com

--- Pete Turnbull <pete(a)dunnington.u-net.com> wrote: > On Feb 3, 22:53, Glenatacme(a)aol.com wrote: > > > Sadly, the WD1770 fcd IC in my home-brew fd i/o board finally gave up the > > ghost. > The 1772 was designed to be a plug-in replacement. The main (only?) > difference is in the programmed step rates. I am looking at a WDC-1772. It has 28 pins. Doesn't the 1770 have 40 pins? > > Also, I understand that the C64 floppy drives (1581?) used the 1770 but > > I'm not a commie and can't immediately verify this. > > I'd be surprised if so. I thought all Commodore micros apart from their > ill-fated PCs used GCR. The standard 5.25" drives _do_ use GCR for all native formats, but the later stuff (1570/1571) also do MFM for CP/M compatibility. The aforementioned 1581 is a 3.5" device (~720K; the not-released 1591 was ~1.44Mb) and does have some form of MFM-capable chip, AFAIK. You can read 1581 disks in other machines, Linux included, I think. -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years

WD1770 help needed

by ard＠p850ug1.demon.co.uk

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26 years

To anybody & everybody who needs to rebuild their Macintosh Portable batteries.

by ard＠p850ug1.demon.co.uk

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26 years

Last Find

by Hans.Franke＠mch20.sbs.de

Well, beside the anoying new headers there's still a CC-life (Ommmm :). As of my last stopover in the new world, I aquired a Tandy DT-1. Quite a cute pice of hardware. For the uninformed (as I have been until someone offered it to me via mail) it's basicly a Tandy Model III/IV case build as a Terminal. The Keyboard is a bit different labeled (of course), and the latch closing the empty FD slots is different than the one used on FD less M3/4 (suprise). Mine is working fine (except the A key), I just miss any kind of documentation at all. I'd apreciate any hint where to find more info or maybe manuals. A quick web search turned nothing up. Gruss H. A missing Reply-to header is a fool proof way to loose contact with your friends.

26 years

IBM parts to donate (fwd)

by dastar＠siconic.com

This guy has an IBM 5360 (huge beast) to give to a good home. He also wants to trade PDP and VAX stuff. Please reply directly to the original sender. Reply-to: cureau(a)pcstarnet.com ---------- Forwarded message ---------- Date: Fri, 04 Feb 2000 08:41:03 -0500 From: Chris Cureau <cureau(a)pcstarnet.com> To: sellam(a)siconic.com Subject: IBM parts to donate Hi there. :-) I've got an IBM 5360, a 5224 printer and two 5291 terminals with keyboards. If you're interested, please let me know... I'm also looking for a few parts for projects I'm working on...specifically from PDPs and MicroVAXen. If you'd like to trade, let me know. :-) Cheers, Chris Cureau Pumpelly Oil Company (337) 625-1117 Sellam International Man of Intrigue and Danger ------------------------------------------------------------------------------- Looking for a six in a pile of nines... VCF Europe: April 29th & 30th, Munich, Germany VCF Los Angeles: Summer 2000 (*TENTATIVE*) VCF East: Planning in Progress See http://www.vintage.org for details!

26 years

regarding the reply address on the list....

by pete＠dunnington.u-net.com

On Feb 3, 20:16, Allison J Parent wrote: > I had to edit the header again, or this reply would have gone to Eric. > > I checked what the mailer(RFDmail) at home does... Same thing it did > before. The last FROM: address it sees is the assumed reply address. In compliance with RFC 822. About the only thing that can legitimately override that is a "Reply-to:". I wonder why no-one has thought of simply swapping the "Sender:" and "From:" headers? -- Pete Peter Turnbull Dept. of Computer Science University of York

26 years

IBM card punches (was Re: Keydisc?)

by ethan_dicks＠yahoo.com

--- James Willing <jimw(a)agora.rdrop.com> wrote: > Well... while I don't have one (tho it would look kool next to my '029) You have an 029? I've got an 026 that is in need of some cleaning/adjusting. Have you ever gone through the process? When we fire it up, not all the right things happen when feeding a card from the hopper. Where do you get your punch cards from? I know you can still order them, but I don't want to buy 10,000 cards at a time. I'm thinking more like a few hundred at a time, and a few colored cards for dividers. Also, do you have a set of the leaf-spring force measurement thingies? I need to aquire a set for the 026 and TTY adjustment, and have no idea where to buy them. Thanks, -ethan ===== Infinet has been sold. The domain is going away in February. Please send all replies to erd(a)iname.com __________________________________________________ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com

26 years

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test-drb February 2000