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I've put together a new b2d unit using components from enofet's design and the boat reactions suggested by EvinZL.
In this version the SET instruction clears any existing boat at the current location so it's now safe to set the same location twice.

b2d.mc

Removing the read circuitry and ...

enofet wrote: July 20th, 2025, 12:06 am Earlier today I finished a modernized B2D unit that I began working on not long after the new scripts were posted here.

Great piece of work. Here it is incorporated into the Lua package:

Edit: Version withdrawn. Please use v1.2 here

I've now converted the compiler and emulator to Lua.
The new version of the package also fixes a couple of bugs, and includes two extra programs and slightly revised documentation.

Edit: Version withdrawn. Please use v1.2 here

As for the B2D unit, I'd also like to see it modernised, but that is way beyond my abilities.
Eh, I kind of doubt that -- you did the arithmetic-unit rewiring, right? You could sort out a new B2D unit eventually -- mostly by making it a whole lot simpler than the old SQ unit, and using some ...

dvgrn wrote: December 14th, 2024, 10:53 am What is the compatibility between this Golly Python compiler and the online APGsembly 2.0 emulator?

I've never looked at the online emulator, so I have no idea how it compares to my version.
As for the B2D unit, I'd also like to see it modernised, but that is way beyond my abilities.

I have created a package for the book's version of APGsembly.

Edit: Version withdrawn. Please use Lua package v1.2 here

The zip file contains:
compiler
emulator/debugger
example programs
a binary arithmetic library
pattern files for creating the computer
documentation

Most of the component ...