68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Null modem cable for a Lisa
Posted by: mactjaap on 2015-07-11 03:40:28
I have successfully constructed a null modem cable from Mac 128K/512K to a PC. This works very nicely for a terminal session to my Linux box.

I was wondering if I can use this same cable for my Lisa. On the "Mac" end I have 25F/9M adapter I can remove so it fits the Lisa. Any knows if this will work or should I buy/construct a different null modem cable?

See pictures:

This is how it is now and works for the Mac 128K or 512K

nullmodem-01.jpg

This is how I could make it to fit on my Lisa

null modem 02.jpg
Posted by: Elfen on 2015-07-11 06:45:54
If it does not work straight, then you need a 25/25 pin null modem connector, which is basically the transmit/received are switched on the Lisa's end.
Posted by: mactjaap on 2015-07-13 12:18:01
Could you recommend one? Or show a link?
Posted by: oldappleguy on 2015-08-02 18:53:46
wiring diagrams

modem eliminator 1.jpg

modem eliminator 2.jpg
Posted by: oldappleguy on 2015-08-02 19:04:50
pin numbers

cable pin no.jpg
Posted by: oldappleguy on 2015-08-02 19:13:29
printer cable

printer cable.jpg
Posted by: mactjaap on 2015-08-03 13:13:21
Thanks!
1