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collapseos/blk/280
Virgil Dupras b1a95648f1 De-stabilize EXIT
This marks the end of wordrefs in stable ABI. Nice.
2020-09-19 20:35:35 -04:00

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Z80 boot code
This assembles the boot binary. It requires the Z80 assembler
(B200) and cross compilation setup (B260). It requires some
constants to be set. See B420 for details.
RESERVED REGISTERS: At all times, IX points to RSP TOS and BC
is IP. SP points to PSP TOS, but you can still use the stack
in native code. you just have to make sure you've restored it
before "next".
The boot binary is loaded in 2 parts. The first part, "decla-
rations", are loaded after xcomp, before xcomp overrides, with
"282 LOAD". The rest, after xcomp overrides, with "283 335
LOADR".