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Re: ][c null modem problems...

as I am looking at the 5-pin male connector, the numbering I used is this:

1   5
 2 4
  3

and the pinout on the db25 end is as follows

1=>20
2=>2
3=>7
4=>3
5=>6
on the db25 end, the numbering is thus (as i look at the connector (not the back of the connector): 

1 2 3   ....   12 13
 14  15 ... 24  25
all of this was my interpretation as to what is in the FAQ. in the FAQ they mention the 5..4..3..2..1 numbering (from left to right as you are looking at the connector) on the female plug on the back of the ][c, but that seems to convert to the numbering i've used on the male plug. should the numbering be 1..3..5..4..2? 

nothing happens in hyperterminal when i type on the ][c .  nada... zilch...





Peter Ibbotson wrote:

"Dean Petters" <dpetters@grc.nasa.gov> wrote in message
3F27BAB0.80404@grc.nasa.gov">news:3F27BAB0.80404@grc.nasa.gov...


I am trying to move some old text files from an Apple ][c to a PC.  I've
read over the FAQ and followed the directions on building a modem cable
from an old 5-pin keyboard cable and a buck-50 DB25 female connector
from Radio Shack (i bought the null modem adapter from RS also, since
that's something i could potentially use elsewhere).  Checking the
connections using a multimeter, it seems that all the wires are properly
connected and that there are no shorts.




What happens if you bash keys on the //c keyboard (hyperterminal should show
those characters)
I suspect you problem here is the pin numbering! The apple version doesn't
match that on the keyboard connector (Been there done that) I can't remember
what the exact difference is I think one numbers clockwise the numbers
outwards from the middle pin i.e. (NOTE THIS DIAGRAM IS WRONG!!! THE CORRECT
ONE IS ELSEWHERE)
1   5  1   2
 2 4    3 4
  3      5

It DOES work I boot strapped my //c using the same method. Just remember to
add the delays to the hyper terminal end.