(Clone this with --recursive so you pull in a copy of KLH10)

This is the beginning of a builder for TOPS-20. At the moment,

make phase1/phase1.tap

should build an installer tape image based on the monitor and exec sources in src/{monitor,exec} and the bootstrap OS installer in tapes/bootstrap.tap.

This is not necessary, but if you're feeling like keeping me honest, tapes/bootstrap can be rebuilt from the DEC distribution tapes with

make phase0/phase0.tap

(network access required to retrieve the DEC tape images) but that eventually should not ever be necessary, and it is expected that eventually bootstrap.tap will be periodically copied from a built phase1.tap. It may be necessary for some development work as it's currently based on the original unpatched 7.0 distribution (but that might be superceded by the source code).

At the moment, src/ contains only a copy of the unpatched 7.0 monitor and EXEC code; this is expected to be rolled forward and expanded over time.

The vision (possibly hallucination) that src/xxx might eventually replaced by submodules pointing into repositories with more complete history.

Note also that the "fatal errors" spewed about the dpni20 device are an expected consequence of the virtual networking not being hooked up.

Needs Python 3 (with a functional venv module) and enough network access to get a copy of pexpect.