LINCtape images

[Jay Jaeger]

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