28 Apr
2020
28 Apr
'20
9:35 p.m.
On Wed, Apr 29, 2020, 12:22 AM steven--- via cctech <cctech at classiccmp.org wrote:
Bill said
Thanks. I have been playing with it today. When I read tapes using a 486
pc DOS 6.22, Dunfield's ptr program...I see the light blink as I carefully
pull a test tape through the OP-80A but when I read the output in a hex
editor all I see are C4 or 04 or whatever. No data. Trying variations.
I may switch to sol80 tomorrow or even an altair with PIO, but then I run
into issues capturing the data.
Bill
Hi - COVID project.... I have been attempting to
read some old Honeywell
DDP-516 papertapes using the OP-80A or Teletype reader but it's
inefficient
and I don't want to damage the tapes. Does
anyone have a reliable
papertape reader for sale, or recommend one currently out there on Ebay,
I have an EECO MT-82 (manual on bitsavers), and it's ok but pulls the tape
through in short
sharp bursts rather than a continuous smooth action, even on the lowest
baud rate.
I have the serial version, there is a separate I/O board for serial and
parallel. For
some reason the right-hand spindle always runs, perhaps the driver
transistor logic has some
problem. I don't use the spindles anyway as I have no reels (I am
designing 3D printed ones)
but the spindle speed is way too fast for old tapes anyway, I think.
With the OP-80A you could try rigging up a small motor to pull the tapes
through at slow
speed, say a LEGO Technic M size motor driving LEGO tires through a simple
gearbox. And build
up some sort of tape guide from LEGO as well.
Steve