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collapseos
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35 Commits

Author SHA1 Message Date
Virgil Dupras 1e0b40a876 Add word "FORGET" 2020-04-13 08:09:36 -04:00
Virgil Dupras af3db1c3cf Add word "LITA" 2020-04-11 13:13:20 -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 6f082b0b13 Change DELW signature 2020-04-09 08:26:27 -04:00
Virgil Dupras b5638d142a Add word "DELW" 2020-04-08 20:40:23 -04:00
Virgil Dupras a7a2f3d08b Move IMMEDIATE from z80c to core 
This makes IMMEDIATE affected by memory mappings.
 2020-04-08 19:43:44 -04:00
Virgil Dupras 9a8c25ceb4 core: fix PSP leak in MOVE 2020-04-06 19:59:20 -04:00
Virgil Dupras 7cd9d29cd8 core: fix MOVE so it copies the right number of bytes 
It copied one too much.
 2020-04-06 16:54:56 -04:00
Virgil Dupras 058b85686f core: add word "MOVE" 2020-04-05 21:02:38 -04:00
Virgil Dupras 41cefb7460 Extract EMIT-dependent routines from core 2020-04-04 08:08:45 -04:00
Virgil Dupras b575d7f863 Move (print) and (uflw) from icore to core 2020-04-03 07:44:44 -04:00
Virgil Dupras 68a7be3707 forth: Remove RAM offsets from stable ABI 
Doing this was a bit stupid. These offsets are constants. Moreover,
having them in stable ABI had us construct the boot binary from the
stable ABI of the host, making it very difficult to change RAMSTART
for a new system.
 2020-04-02 10:20:51 -04:00
Virgil Dupras b7244f8985 forth: shrink forth.asm's binary size 2020-03-31 22:11:44 -04:00
Virgil Dupras 7d5b1f5cea forth: Forth-ify parseDecimal 2020-03-31 15:04:28 -04:00
Virgil Dupras 031bfc6d72 forth: setup SYSVNXT in Forth code 2020-03-30 21:48:56 -04:00
Virgil Dupras 5c03b33982 forth: remove sysvarWord type 
Not needed anymore. CONSTANT does the trick.
 2020-03-30 21:19:48 -04:00
Virgil Dupras f366732424 forth: Forth-ify "DOES>" 2020-03-30 20:01:59 -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 e984efe6c3 forth: Forth-ify SYSVNXT 2020-03-30 14:19:47 -04:00
Virgil Dupras 48078d9c9c forth: Replace "SKIP?" with "(?br)" 
There is an alternate git history where I continued the Forth-ification of
words, including "SKIP?", but that was a bad idea: because that word was
written by flow control immediates, I stepped into quicksands where stability
became necessary in z80c.fs and I couldn't gracefully get out of it.

I'm stepping back and take this opportunity to replace the shoddy SKIP? algo
with a more straightforward (?br) implementation.

(br) and (?br) will always stay in boot code where it's easier manage a stable
ABI.
 2020-03-29 09:10:23 -04:00
Virgil Dupras 6e3b47f4a4 forth: Replace "(fbr)" and "(bbr)" words by "(br)" 
I can't get rid of "(fbr)" and "(bbr)" just yet, but soon...
 2020-03-28 11:31:16 -04:00
Virgil Dupras 409a9f87e5 forth: replace "ROUTINE" with "JTBL" 2020-03-27 19:53:28 -04:00
Virgil Dupras 684cb028ff forth: add words "[" and "]" 2020-03-27 15:25:20 -04:00
Virgil Dupras c2d8fc845d forth: bring ." and ABORT" down to core.fs level 2020-03-25 20:39:07 -04:00
Virgil Dupras 3e934a2a3b forth: fix name conflict with "H" in core and z80a 2020-03-25 20:13:33 -04:00
Virgil Dupras 77ecbc4918 forth: Forth-ify "'" and "[']" 2020-03-25 20:06:06 -04:00
Virgil Dupras 04a6784de4 forth: Forth-ify "(sysv)" 2020-03-25 08:39:44 -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 46833f3819 forth: Forth-ify "LIT", "LITS", "LIT<" 2020-03-22 11:56:40 -04:00
Virgil Dupras 54fd5fbb2b forth: Forth-ify "CREATE" 2020-03-22 11:49:09 -04:00
Virgil Dupras f4b969986d forth: Forth-ify "."" 2020-03-21 17:21:01 -04:00
Virgil Dupras 145fdd8e05 forth: rename "LITS" to "LIT<" 2020-03-21 16:27:21 -04:00
Virgil Dupras 4627e1c977 forth: Forth-ify "ABORT"" 2020-03-21 16:17:51 -04:00
Virgil Dupras c1ece95089 forth: implement readline in Forth 
The commit ended up being much bigger than anticipated. This was a long thread
of underlying complexities. This lead to the creation of interesting concepts
such as (sysv).
 2020-03-21 12:57:49 -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