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collapseos
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122 Commits

Author SHA1 Message Date
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 3a08fa7e74 forth: add a stable ABI 2020-03-24 23:02:06 -04:00
Virgil Dupras f0ab57c8cc forth: Forth-ify "AND" 2020-03-24 22:09:52 -04:00
Virgil Dupras 6c5f39806b forth: improve bootstrap process 2020-03-24 21:13:02 -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 5387e08437 forth: make bin staging process a bit less hackish 
The goal being to add a new native code dict staging phase.
 2020-03-22 21:46:43 -04:00
Virgil Dupras ffe61a12f8 forth: make prev word field relative 
This should help with upcoming challenges in bootstrapping z80 code
compiled through Forth.
 2020-03-22 17:41:59 -04:00
Virgil Dupras cf95bbcace forth: inline kernel/stdio 2020-03-19 17:26:45 -04:00
Virgil Dupras 6134694513 forth: put all ASM code in the same file 2020-03-19 17:01:15 -04:00
Virgil Dupras f0cbda1f2e tests: add Forth tests 
Modest first step
 2020-03-19 15:43:48 -04:00
Virgil Dupras b335e538b4 Move "forth" folder to project's root folder 
It's not really an App.
 2020-03-18 22:25:44 -04:00
Virgil Dupras ae6334906c forth: inline kernel's core and str units 2020-03-18 22:18:07 -04:00
Virgil Dupras 1df9c4fc1b forth: split forth source into multiple files 2020-03-17 21:44:32 -04:00
Virgil Dupras 549cf74e9d forth: inline code from "apps/lib" 
Forth-ification of Collapse OS goes forward. What will happen is that assembly
code in apps/ will become Forth code. The concept of an assembler code library
will become obsolete.

However, Forth's core use some of that code. To facilitate the transition, I'm
inlining that code directly in Forth's code.
 2020-03-17 12:49:06 -04:00
Virgil Dupras 017a469d9c forth: Forth-ify "." 2020-03-17 12:26:28 -04:00
Virgil Dupras c3838714d5 forth: improve execution model 
My approach with RS was slightly wrong: RS' TOP was always containing current
IP. It worked, but it was problematic when came the time to introduce
RS-modifying words: it's impossible to modify RS in a word without immediately
messing your flow.

Therefore, what used to be RS' TOS has to be a variable that isn't changed
midway by RS-modifying words. I guess that's why RS is called *return* stack...
 2020-03-13 16:01:09 -04:00
Virgil Dupras a8e573c84a forth: add bin dict compilation stage! 
Big one.

This allows us to write higher order words directly in Forth, which is much
more convenient than writing post-immediate (see "NOT" structure in diff if
you want to see what I mean) structures in ASM.

These structures can then be written to ROM (rather than loaded in RAM for
definitions loaded at run-time).

That's quite a bit of tooling that was added, 2 compilations stages, but I
think it's well worth it.
 2020-03-12 00:14:44 -04:00
Virgil Dupras abdf2c8adc emul/forth: allow running commands from file 2020-03-11 19:03:47 -04:00
Virgil Dupras e95614755b emul: add forth target 2020-03-09 22:26:02 -04:00