Skip to content
This repository has been archived by the owner on Dec 24, 2020. It is now read-only.

More PDP-11 Boot Options
Compare
Choose a tag to compare
@jeffpar jeffpar released this 06 Dec 00:50
· 2461 commits to master since this release
v1.30.6
9d944e1

PDP-11 machines no longer need to be running the PDP-11 Boot Monitor in order to boot from disk images. Disk Controllers can now (and do) include Boot buttons that simulate reading and executing the selected disk's boot sector. Note that the disk image must be loaded with the Load button first (unless it was preloaded by the machine configuration).

We use the same terminology for Paper Tape controls now, too. Tapes are "Loaded" into the Paper Tape reader in the same way that disk images are "Loaded" into their respective drives. Yes, SimH uses the term "Attach", but PCjs machines have always used the "Load" to describe this operation, so we're going to stick with that. Also, the control to read a Paper Tape image directly into memory is now called Read.

A number of other features crept into this release as well, including some Debugger improvements, such as the ability to:

  • Set read/write breakpoints on IOPAGE addresses
  • Refer to IOPAGE addresses by their symbolic name, if any (eg, RBUF, XCSR, etc)

And there were some performance improvements, such as:

  • Eliminating the NO_FLAGS hack (PSW flags are simply updated before the destination)
  • Combining DEBUGGER checks with OPFLAG checks, so all we have to check is opFlags
Assets 2
Loading