Virgil Dupras
add3b6629b
Make DO .. LOOP binary code more compact
...
Only a few bytes saved in forth1.bin, but the DO .. LOOP construct
isn't used much yet. It's still significant savings per LOOP call.
2020-04-14 14:59:01 -04:00
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
