> I have something interesting in front of me - a "key card" for Protel. > But, I also have no access to a 5.25" drive any more, and I certainly > don't have a machine with an XT expansion slot for the card. I think it > was XT, wasn't that the short one compared to the longer AT one? Who > remembers, soooooo long ago :)
"Legacy" Ivan remembers, that's who! The XT slot (8-bit data bus) was a short 62-pin edge connector. The AT slot (16-bit data bus) was a long slot, containing a XT slot as a subset, and adding a 36-pin edge connector for the extra bus signals. In a way, it's too bad PC's don't have a truly simple bus anymore. All you needed to interface to the XT/AT bus was an address decoder and bus transceiver. You could PEEK and POKE (memory) or IN and OUT (I/O). I'm glad we have high-bandwidth buses in modern computers, but I wish they still had 1 or 2 AT slots too. Oh well... I still have a working 486DX with XT/AT slots and 5.25 in. floppy drive. It can multi-boot various versions of DOS, and Windows 95. It could probably boot a stripped down Linux distro, but I don't have time or inclination to try it. 850MB HDD, 10bT ethernet card, and a bus extender card. No CD burner, but files can be transferred to a CD over the network. I also still have a working 286 - well, it worked the last time I turned it on, which was over 3 years ago! It was my first computer - I've disposed of a few computers since then, but can't bring myself to throw out my first computer! You know what they say, "You never forget your first!" ;-) Best regards, Ivan Baggett Bagotronix Inc. website: www.bagotronix.com May Scott wrote: > Hi Bob, > > I have something interesting in front of me - a "key card" for Protel. > But, I also have no access to a 5.25" drive any more, and I certainly > don't have a machine with an XT expansion slot for the card. I think it > was XT, wasn't that the short one compared to the longer AT one? Who > remembers, soooooo long ago :) > > My 5.25" discs are for Protel 2.0, developed by Protel Systems, > distributed by HST Industries, in 1986. I have the discs to suit the > powerhouse NEC APC III that I was using at the time. > > This kit is mint - I wonder what I can get for it on eBay :) > > > I have another old Red Box (like the 2.0 version) but this one is 3.12 > dated about 1987. I notice in the "Release Notes" they mention: > > (10) The new external protection device "SENTINAL" will now work on LPT2 > as well as LPT1. > > Perhaps the card you can't find was actually an early dongle. I can't > find a card or dongle for this version... > > Sorry about the nostalgia - I couldn't help it. > > > > Thanks, > Scott. > ______________________________ > Scott May > Ph 07 3892 5610 > > Date: Sun, 14 May 2006 13:49:57 +1000 > From: Robert Mitchell <[EMAIL PROTECTED]> > Subject: Re: [PEDA] Converting Very Old Protel V3 PCB Files > > I have located the box containing my original Protel disks and manual. > Unfortunately, I no longer have a computer with a 5.25 disk drive > installed and anyway, I have no idea where the "key card" required to > run the PCB editor is. > The requirements for this program, Protel PCB Edit V3.12 are: > IBM-PC/XT/AT computer or compatable. (There is a note that the program > uses integer arithmetic, so there is no advantage in installing an > 8087/80287 Numeric Coprocessor.) > MS-DOS or PC-DOS, version 2.0 or greater. > One Unoccupied Half-card Slot (for the Key Card) > 2 Disk Drives - one floppy and one either floppy or hard disk. > 256K (or greater) RAM > CGA or EGA graphics card > Colour Monitor > Microsoft Mouse > > > > > ************************************************************************ > The information in this e-mail together with any attachments is > intended only for the person or entity to which it is addressed > and may contain confidential and/or privileged material. > Any form of review, disclosure, modification, distribution > and/or publication of this e-mail message is prohibited. > If you have received this message in error, you are asked to > inform the sender as quickly as possible and delete this message > and any copies of this message from your computer and/or your > computer system network. > ************************************************************************ ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[email protected] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected]
