19 Jan
2012
19 Jan
'12
5:08 a.m.
On Wed, Jan 18, 2012 at 05:34:02PM +0000, Ian King wrote:
I'd recommend finding paper tape images (Bitsavers, pdp8online.com) and
feeding them in through a terminal emulator. The DECtape controller is
itself a complex piece of equipment - minimize your variables! :-)
To save time I changed the timing capactior on a spare M452 and put
that in my 8/I and used a current loop to 232 adapter so I can quickly
download the diags from a PC. I aimed for 9600 baud but found with the
capacitor I picked I could only adjust it to 4800 baud. Also I found none
of the cheap USB to serial boards will do 110 baud, only real serial ports
can.
My 8/I tape images are here
http://www.pdp8online.com/ftp/software/paper_tapes/