Tom, You shouldn't need to replace your usb/serial adapter. I know that there is the odd ball case out there but the VAST majority of these converters just create a 9pin male serial port that matches the standard port found on an IBM-AT from the mid 80's.
Here is a thought. Take a picture of your setup and send it. Keep in mind that emails to the list need to be less than 64k so the picture will need to be small. Kurt On Wed, Apr 10, 2019, at 12:30 PM, Thomas Morehouse wrote: > Yep - definitely a neat looking setup! > > But if I buy yet another cable - this time one of the null modem cables > recommended on that Tandy wiki page ... don't I still have to buy a > usb/serial converter unit? > > As the list members have pointed out, there seems to be a wiring problem with > my current usb/serial unit. So using my current usb/serial unit is causing > the screen voltage problem. > > Tom M. > > > On Wed, Apr 10, 2019 at 3:27 PM Brian K. White <bw.al...@gmail.com> wrote: >> On 4/10/19 1:28 PM, Kurt McCullum wrote: >> > Perhaps a picture may help. >> > >> > On the left are the two slim adapters stacked. This ends up being a >> > DB9 to DB25 null modem cable. On the right is a USB to serial adapter. >> > The two adapters on the left, get put into the DB9 port on the right. >> > >> > The cables that Brian has listed on his site would take the place of >> > the two slim adapters on the left of the picture. >> > >> > Kurt >> >> That is another nice neat arrangement. >> I like it. >> >> -- >> bkw >>
