11 Jul
2012
11 Jul
'12
10:18 a.m.
On second thought, I concur. The fingers seem to match
the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power
is at the (what would be in this pic) right hand side, and those look like
signals going to the 244.
On an Apple the pins 45 and 47 (the way this card is numbered) would be
daisy chained to the other side.
Not Apple IMO.
W
12 Jul
12 Jul
3:11 a.m.
On 7/11/12, Wouter <wrm at retro.co.za> wrote:
That is what I thought initially, then I got confused by the pin
numbers on this card, thought my memory had failed me, but you're
absolutely right, it's not an Apple II card (at least not standard).
So, on third thought, I'm back to what I said in my first thought ;-)
On second thought, I concur. The fingers seem to
match the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power
is at the (what would be in this pic) right hand side, and those look like
signals going to the 244. 
4:58 a.m.
On Thu, 12 Jul 2012, Camiel Vanderhoeven wrote:
On 7/11/12, Wouter <wrm at retro.co.za> wrote:
That is what I thought initially, then I got confused by the pin
numbers on this card, thought my memory had failed me, but you're
absolutely right, it's not an Apple II card (at least not standard).
So, on third thought, I'm back to what I said in my first thought ;-)
Wasn't there a short-lived "S-50" bus once upon a time?
--
On second thought, I concur. The fingers seem to
match the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power
is at the (what would be in this pic) right hand side, and those look like
signals going to the 244.
5:15 a.m.
Wasn't there a short-lived "S-50" bus
once upon a time?
There was an SS50 bus, but the pins don't make sense for that bus either:
http://www.cs.unc.edu/~yakowenk/swtpc/ss50.html
3:16 a.m.
On 11 July 2012 18:18, Wouter <wrm at retro.co.za> wrote:
Here's the back side-
http://www.irrelevant.com/rob/IMG_3025.JPG
Power definitely in the middle!
Rob
On second thought, I concur. The fingers seem to
match the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power is
at the (what would be in this pic) right hand side, and those look like
signals going to the 244. 
3:44 a.m.
On 12/07/2012, at 8:16 PM, Rob wrote:
On 11 July 2012 18:18, Wouter <wrm at
retro.co.za> wrote:
Here's the back side-
http://www.irrelevant.com/rob/IMG_3025.JPG
Power definitely in the middle!
Rob
The only computer apart from the Apple II that I've come across with similar looking
50 pin cards is the Hitachi MB-6890, but I no longer have one or any documentation..
Chris
On second thought, I concur. The fingers seem to
match the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power is
at the (what would be in this pic) right hand side, and those look like
signals going to the 244. 
8:41 a.m.
On Thu, 12 Jul 2012, Rob wrote:
On 11 July 2012 18:18, Wouter <wrm at
retro.co.za> wrote:
Here's the back side-
http://www.irrelevant.com/rob/IMG_3025.JPG
Power definitely in the middle!
I googled the text on the back of the card, and I got a single good hit
for GTP244.
http://www.signs101.com/forums/archive/index.php/t-64287.html
It talks about a Gerber SuperSprint plotter that has GTP244-1 and GTP293-1
cards in it. Perhaps your card is from a proprietary expansion bus in this
plotter?
Alexey
On second thought, I concur. The fingers seem to
match the Apple II
slot (power and data lines in the correct positions), so it is very
likely an Apple II card.
Naaah, I disagree.
Sure, it yelled "Apple" at me immediately.
But it looks like the power is in the middle, by C1... and Apple II power is
at the (what would be in this pic) right hand side, and those look like
signals going to the 244. 
9:38 a.m.
Alexey Toptygin <alexeyt at freeshell.org> writes:
It talks about a Gerber SuperSprint plotter that has
GTP244-1 and
GTP293-1 cards in it.
And the Gerber parts list at <http://www.betatronics.ch/stockgx.htm>
includes:
"GX P35657C GTP-244-1 Ser. Com LMK-Interface GX4/SP/SSP"
Searching for 'Gerber "Lettering Machine Kit"' will find more
references
-- including people who have a plotter and would like to buy the serial
card for it. ("Gerber LMK" will also get you there, if you ignore the
results about knives.)
--
Adam Sampson <ats at offog.org> <http://offog.org/>
11:30 a.m.
On Thu, 12 Jul 2012, Alexey Toptygin wrote:
It talks about a Gerber SuperSprint plotter that has
GTP244-1 and GTP293-1
cards in it. Perhaps your card is from a proprietary expansion bus in this
plotter?
I don't know anything about their product line. But, as a nostalgic old
fart, . . . I did a little time at GSFC SSDC (Bldg 26) on "the
etch-a-sketch" - A Gerber Data Digitizer that consisted of a light board
about 2 feet square, with two big knobs to turn to move cross-hairs.
When you had them where you wanted, you hit a foot-pedal and an 026 punch
next to it punched two three digit numbers for the coordinates.
13 Jul
13 Jul
11:19 a.m.
On Thu, 12 Jul 2012, Alexey Toptygin wrote:
One of the most common file formats for PCB production is known as a
'Gerber file'[1] I assume this was originally data to be sent to a
photoplotter or similar made by said compent.
[1] for some unknown reason, engineers often corrupt that to 'gerbil
file' ;-)
It talks about a Gerber SuperSprint plotter that
has GTP244-1 and GTP293-1
cards in it. Perhaps your card is from a proprietary expansion bus in this
plotter?
I don't know anything about their product line. But, as a nostalgic old fart, . . . I did a little time at GSFC SSDC (Bldg
26) on "the
etch-a-sketch" - A Gerber Data Digitizer that consisted of a light board
about 2 feet square, with two big knobs to turn to move cross-hairs.
When you had them where you wanted, you hit a foot-pedal and an 026 punch
next to it punched two three digit numbers for the coordinates.
Soounds...fun.
Incidentally, about your comment on a teach who thoguth $\pi$ was exactly
22/7. The preface for a book called 'Foundations of Wireless' (I am
lookign at the 3rd edition, 1943 reprint). contains the following :
'In particular "$\pi$" (read as "pi") is always used for the ratio
of the
circumference of a circle to its diameter; it is mentioend here because
its meaning is almost always taken for granted. The corresponding
numerical value is 3.1416 approximately (the decimal never ends), or
about 22/7"
Yor teacher should have read said book :-)
-tony
4496
days inactive
4498
days old
9 comments
9 participants
participants (9)
-
alexeyt＠freeshell.org -
ard＠p850ug1.demon.co.uk -
ats＠offog.org -
cisin＠xenosoft.com -
iamcamiel＠gmail.com -
pye＠mactec.com.au -
robert＠irrelevant.com -
snhirsch＠gmail.com -
wrm＠retro.co.za