DEC VT20 boot device

Noel Chiappa jnc at
Mon Aug 12 18:18:40 CDT 2019

    > I didn't fully disassamble the program

I have now done so; the -YK is _exactly_ the same as the -YA (the later ones,
which are minorly different from what's in the manual), except that the HSR
address (177550) has been replaced as the primary device address by that of
DL11 #1, in the second block of DL11 addresses (175610).

In other words, the ROM is prepared to load something in bootstrap loader
format (which I have documented here:

the one program known in this format is the absolute loader) over the
non-console serial line.


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