James Youngman

If the AE registers share a metabit (in M) then we will likely need a struct attribute somewhere which holds the value of M, and will need to integrate this...

I'm tagging this as "good first issue" because the work can be done with only a knowledge of Rust, and that it's not necessary to understand much, if anything, about...

[Extract from theUsers Handbook describing the CRT and light pen](https://github.com/TX-2/TX-2-simulator/files/8458689/TX-2-Light-Pen-and-CRT-from-UsersHandbook.pdf)

[TX-2-Timer-from-UsersHandbook.pdf](https://github.com/TX-2/TX-2-simulator/files/8458694/TX-2-Timer-from-UsersHandbook.pdf)

The timer unit (sequence 54) is documented in page 4-27 of the [User's Handbook](https://tx-2.github.io/documentation.html#tx-2-users-handbook).

This is a reasonably good starter issue because we already implemented SKM (in op_jump.rs) and this jump instruction will have a similar instruction, but a simpler condition (the comparison part...

It is likely simpler to[ implement the CRT first](https://github.com/TX-2/TX-2-simulator/issues/3) before implementing the light pen.

[Extract from theUsers Handbook describing the CRT and light pen](https://github.com/TX-2/TX-2-simulator/files/8458689/TX-2-Light-Pen-and-CRT-from-UsersHandbook.pdf)

The Xerox printer is described in te [TX-2 Users Handbook](https://tx-2.github.io/documentation.html#tx-2-users-handbook). The relevant pages are attached. [Xerox_printer_from_TX-2_UsersHandbook_Nov63_or_Jul61.pdf](https://github.com/TX-2/TX-2-simulator/files/8458677/Xerox_printer_from_TX-2_UsersHandbook_Nov63_or_Jul61.pdf)

This is a reasonably good starter issue because we already implemented SKM (in op_jump.rs) and this jump instruction will have a similar instruction, but a simpler condition (the comparison part...