20 Jan
2014
20 Jan
'14
1:43 p.m.
On Jan 20, 2014, at 4:13 PM, Al Kossow <aek at bitsavers.org> wrote:
On 1/20/14 12:59 PM, Holm Tiffe wrote:
If you can?t find a data sheet, there?s at least one place that has programming
information (though not pinouts): the DEC Pro 300 series technical manual (available on
bitsavers.org). The PRO 350/380 uses the 7201 USART for the comm port, and register
information is found in Volume 1 starting at pages 5-97 to 5-112. I used that to write a
working drivers (sync as well as async) so that information is pretty accurate and
complete.
paul
I can't find a datashet for the uPD7201C
using google or the usual
suspects
how about
http://bitsavers.org/pdf/nec/_dataSheets?