--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
> Can you name one other system (not a Mac 128 or Mac512 varient) that has
> the same pinout for a DE9 serial port? Because I sure can't think of one.
I have two _peripherals_ that do - an ISA AppleTalk card (third party)
and an Asante AppleTalk<->Ethernet bridge. I am not aware of any
non-Mac-compatible/non-AppleTalk devices that use that particular
(semi-)standard.
-ethan
=====
Even though my old e-mail address is no longer going to
vanish, please note my new public address: erd(a)iname.com
The original webpage address is still going away. The
permanent home is: http://penguincentral.com/
See http://ohio.voyager.net/ for details.
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I am looking for a working Videobrain system with software. If anyone has one available for sale or has any leads, I would really appreciate hearing about it. Thank you.
> > Well, I'd posit that Apple _set_ standards instead of following them.
> >
> > For example, Apple's use of a DB-25 for a SCSI port and the pinout
> > they chose has been copied widely throughout the industry.
>
> Try to plug in a device with the Future Domain pinout. I don't know
> which came first, I just know that they are incompatible to the point
> of releasing the majic smoke.
How strange! I have a Future Domain SCSI card (850-MEX?) that uses
exactly the Apple pinout, and even carries a sticker on the rear
bezel stating same!
> > More conventionally, the serial ports follow normal pinouts, even
> > though they're electrically RS-422 instead of RS-232C.
>
> The "normal pinouts" were defined by Apple. Other systems used different
> pinouts on the same Mini-DIN connector (Epson PX-8, for example).
As Tony caught, I had been referring to the DB-9 serial ports on the
128k, 512k, and 512ke Macs. I started early...
regards,
-dq
> At 09:33 PM 11/27/00 -0500, Louis Schulman wrote:
> >Does someone have the software. I have downloaded the two
> >.hqx files, but they are password protected. Doh! Anyone
> >know how to crack password protection on an .hqx file?
Is the DaynaFile 2 the 5 1/4 inch external floppy drive for
a Mac that reads PC floppies? If so, I think I've got the
software somewhere (got the drive, at least)...
-dq
> > > I'm trying to think of any interface on the Mac that is in any sense
> > > 'standard'. And no, I can't think of one...
> >
> > Well, I'd posit that Apple _set_ standards instead of following them.
>
> Even when there were already perfectly good standards to use...
>
> > For example, Apple's use of a DB-25 for a SCSI port and the pinout
> > they chose has been copied widely throughout the industry.
>
> YEs, but the 50 pin SCSI standards have the advantage that there's a
> ground wire between the signal wires if you use stnadard ribbon cable.
> That's _why_ a 50 pin connector was originally chosen. The DB25 is thus
> technically inferior....
Depends on how long your cable needs to be. I've got a hard drive with
a 6-inch SCSI cable, and at lengths that short, you really don't need
the extra ground lines, unless you'be in a *really* noisy RF environment.
OTOH, if you really need to run long SCSI cables, having the extra
ground lines isn't really enough; in that sense, single-ended SCSI
is technically inferior to differential SCSI.
> > More conventionally, the serial ports follow normal pinouts, even
> > though they're electrically RS-422 instead of RS-232C.
>
> Eh? The Mac serial ports are 8 pin Mini-DIN on almost all Macs I've seen.
> That was not a standard at the time, and is only a de-facto standard now.
>
> The original Mac and Mac 512k used DE9 seiral ports, with a pinout
> different to everyone else (and yes, there _were_ 9 pin serial ports
> about when the Mac was introduced).
Until I started working here, I'd seen more 128k, 512k, and 512KE Macs
than any other models. YMMV, etc.
> > And as someone else pointed out, Mac power cords fit just about
> > any computer device from the PC era forwards.
>
> And just about any other electronic device...
Well, my old Sony reel-to-reel uses a cord that appears as if
it's compatible with my old waffle iron and coffee percolator.
;-)
-dq
You can sneeze funny and get 30 gung-ho techies to create a new flavor of
Linux but nobody seems to want to work on a Web Browser that can work on
classic hardware? (besides Lynx of course :-)
--Chuck
> Well, my experience seems to suggest that Apple _never_ followed accepted
> hardware standards, particularly with respect to connectors. Even their
> first serial card for the Apple ][ was wired as a DCE (and not a DTE
> which just about every other computer that I've come across is).
>
> I'm trying to think of any interface on the Mac that is in any sense
> 'standard'. And no, I can't think of one...
Well, I'd posit that Apple _set_ standards instead of following them.
For example, Apple's use of a DB-25 for a SCSI port and the pinout
they chose has been copied widely throughout the industry.
More conventionally, the serial ports follow normal pinouts, even
though they're electrically RS-422 instead of RS-232C.
In 1984, there wasn't any kind of a standard in place yet for a
mouse interface.
And as someone else pointed out, Mac power cords fit just about
any computer device from the PC era forwards.
regards,
-dq
If someone is interested in this machine, please contact the original
sender directly.
Reply-to: drawling(a)ix.netcom.com
---------- Forwarded message ----------
Date: Sun, 26 Nov 2000 12:48:56 -0800
From: Micael mcQuade <micaelm(a)ix.netcom.com>
Subject: Donation of IBM PS2
November 26, 2000
Hey Guys,
I have been looking for a home for my old IBM PS/2 Model 60. It is in
original 1988 condition and has Microchannel, 80286 10 MHz Chip, 44 MB
Hard Drive with AST 3 MB RAM Board. Currently it runs with Windows 3.1
and DOS 4.01, Word for Windows and Excel for Windows Version 1. I want
it to have a "loving home" and useful afterlife as I have been loathe to
part with it out of purely sentimental reasons. I will include all
software and the original "Reference Diskette" etc. I probably have
other vintage memorabilia as well to add. Any IBM-philes will appreciate
the elegant Microchannel Architecture which was way ahead of its time!
Please let me know if this donation is of interest to you and to where
and whom I may ship it.
Denise Rawlings
I can be reached by email at drawling(a)ix.netcom.com.
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
Combination of procrastination and lack of resources has put this one in
danger. PDP 11/45 system with a terminal or two is in danger of ending up
on the scrap in a very few days. I've been trying to find a way to get up
there to get it, but it is just not working out.
If anyone in the area is interested, or should just happen to be coming
this way and would not mind picking up a hitch hiking computer, please
contact me for details.
-jim
---
jimw(a)computergarage.org || jimw(a)agora.rdrop.com
The Computer Garage - http://www.computergarage.org
Computer Garage Fax - (503) 646-0174
They might not be in the catalogue - but I bought one on saturday, for 25 of our english pounds,
>from the one in Southampton, and slapped it togeather in a couple of minutes. Still doesn't come
with a backplate - i'll have to make one up, next time i'm near a metal shop. I daren't put it in
my PC - the card's such a loose fit in the slot being 8-bit isa :(
Ho hum, three rail eprom dumper here we come :)
Dave.
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