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collapseos
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31 Commits

Author SHA1 Message Date
Virgil Dupras 7292d486dc z80a: add stuctured flow words 
Allow us to rely a little less on labels. We now only need 4.
 2020-04-13 20:34:53 -04:00
Virgil Dupras d996dd8c9e Add one layer of indirection in subsystem memory management 
This allows optional subsystems to not needlessly reserve too much
system memory and it also reduces offsets bookkeeping.
 2020-04-12 20:42:00 -04:00
Virgil Dupras 6368cc3bac Remove (sysv) 
Replace its usages with direct RAM+ offsets. The (sysv) mechanism was
incompatible with cross-compilation of a full interpreter.
 2020-04-10 14:57:00 -04:00
Virgil Dupras c56386af02 wip 2020-04-02 23:21:53 -04:00
Virgil Dupras d0c5d3a741 Forth self-bootstraps!!! 
This commit cuts Forth's dependency on zasm. It now self-assembles
its own boot-binary! Things are a bit messy now, I'll clean up
later.
 2020-04-01 22:19:37 -04:00
Virgil Dupras 7d5b1f5cea forth: Forth-ify parseDecimal 2020-03-31 15:04:28 -04:00
Virgil Dupras 25814c0b8b forth: add label system to z80 assembler 2020-03-31 09:23:00 -04:00
Virgil Dupras 05045b2aa4 forth: move stable ABI stuff at the top of forth.asm 
Now we're having a real nice and tidy forth.asm...
 2020-03-30 21:02:19 -04:00
Virgil Dupras 36e200adbb forth: Forth-ify "SCPY" 2020-03-30 17:59:30 -04:00
Virgil Dupras 80985460d4 forth: remove JTBL 
We refer to stable offset as direct numbers instead of offset to JTBL.
Simpler that way.
 2020-03-30 17:05:00 -04:00
Virgil Dupras 8ef9e7d0da forth: Forth-ify "@" 2020-03-30 14:05:07 -04:00
Virgil Dupras e0eaa8ba63 forth: Forth-ify "ABORT" 2020-03-28 10:11:52 -04:00
Virgil Dupras 8d8e1d93da forth: slightly improve assembler 2020-03-28 09:39:24 -04:00
Virgil Dupras 8f990ff954 forth: Forth-ify "IMMEDIATE" 2020-03-27 21:36:05 -04:00
Virgil Dupras 409a9f87e5 forth: replace "ROUTINE" with "JTBL" 2020-03-27 19:53:28 -04:00
Virgil Dupras 29dcddb8cd forth: improve assembler a bit 2020-03-27 18:38:42 -04:00
Virgil Dupras 684cb028ff forth: add words "[" and "]" 2020-03-27 15:25:20 -04:00
Virgil Dupras e82f13acf1 forth: Forth-ify "I", "I'", "J" 2020-03-26 14:11:22 -04:00
Virgil Dupras 636407969d forth: Forth-ify "(emit)" 2020-03-26 12:05:48 -04:00
Virgil Dupras 52e6eaafc7 forth: Forth-ify "/MOD" 2020-03-25 22:51:23 -04:00
Virgil Dupras 6d8edeec63 forth: Forth-ify "C!" and "C@" 2020-03-25 17:52:51 -04:00
Virgil Dupras 66412a1c30 forth: Forth-ify "XOR" 2020-03-25 17:24:46 -04:00
Virgil Dupras 1871f7cdb4 forth: Forth-ify "OR" 2020-03-25 17:19:47 -04:00
Virgil Dupras eb6a07a162 forth: Forth-ify "PC@" 2020-03-25 17:13:10 -04:00
Virgil Dupras 7beac94b5a forth: Forth-ify "PC!" 2020-03-25 17:07:15 -04:00
Virgil Dupras f0ab57c8cc forth: Forth-ify "AND" 2020-03-24 22:09:52 -04:00
Virgil Dupras d6516e2122 forth: Forth-ify "2*" stack management words 2020-03-24 14:44:10 -04:00
Virgil Dupras 67c55b0b2f forth: Forth-ify ROT, a native word! 
This requires us to significantly adjust our build process, which
now has 3 stages.
 2020-03-24 13:46:05 -04:00
Virgil Dupras ca7c21d49f forth: make "(entry)" call WORD itself 
Otherwise, when a defining word would be called outside a definition
itself, it would get the name of the last parsed word, that is,
itself!

For example, dummy.fs, instead of creating a "_______" entry, created
a "(entry)" entry...
 2020-03-22 22:27:54 -04:00
Virgil Dupras 00de336976 forth: add "CODE"!!! 2020-03-22 12:08:50 -04:00
Virgil Dupras 33e47d4938 forth: begin z80 assembler 2020-03-21 21:23:13 -04:00