11 Sep
2011
11 Sep
'11
9:45 a.m.
On 11 Sep 2011 at 12:24, Richard Cini wrote:
I actually use a converter from Parallax based on the
FTDI chip for
all of my vintage stuff. It's a PCB attached to a DE9M and a USB cable
that's detachable. Right now, it says out of stock ($14.99).
By and large, I find that the cheap Serial-to-USB converters work
just fine, but don't do the higher speeds (e.g. 250K bps), but top
out at 150Kbps. I think I paid about $3 apiece online.
Of course there are no drivers for MS-DOS, so it's not quite the same
as a real serial port.
How about USB-to-Parallel for non-printing uses? I know what the
protocol is for several of my parallel-port-interface devices, but
trying to get it through an adapter is a whole new experience.
About the only flexible design that I've seen that gives the ability
to manipulate individual pins is the DIY V-USB design using an AVR.
Are there any others?
--Chuck