On 11/2/2021 9:53 PM, Vincent Slyngstad via cctalk wrote:
On 11/2/2021 2:25 PM, Jay Jaeger via cctalk wrote:
Here is a program I wrote for reading/writing tape images via XModem
protocol for my PDP-12, and another for comparing two linctapes.
Cool! I was able to recover the code and convert it into a more modern
PAL dialect. Your listings also don't display the many literals that
were generated on page zero (except sort of implicitly).
In making the page zero literals line up (so that the code matches the
originals), I found two locations in xmtape which are coded as
TAD (16.
but the code references a new literal at location 0161, instead of the
previously generated one at location 0166. This is at location 0567 and
again at 0666.
(In the PAL assemblers, the "(" must be a "[", you can't use "." to
change radix, etc. etc.)
Vince
I probably used LAP-6 or DIAL to do the assembly - I don't recall right
now.
It seems you didn't notice that I included two separate programs in my
previous post: XMTAPE and CMPTAP ;)
In XMTAPE we see:
0215 0315 1161 0020 TAD (16.
0540 0567 1161 0020 TAD (16.
0646 0666 1161 0020 TAD (16.
In CMPTAP - a separate program - we see:
0216 0336 1166 0020 TAD (16.
JRJ
