4 May
2025
4 May
'25
9:21 p.m.
On Sun, May 4, 2025 at 1:59 PM I wrote:
They describe it as MICROCODE...
I mean, it probably IS microcode in the sense that without it the CPU
may not actually do anything because it's just a bunch of resources
which the bits in the microcode call into action to implement an ISA.
So that 16K of MOS ROM is probably implementing an instruction set,
implementing the BASIC runtime using that instruction set, and
implementing the BASIC interpreter application with all the associated
user-interface, parsing, etc.