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collapseos
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151 Commits

Author SHA1 Message Date
Virgil Dupras 338769a0a8 z80a: add PUSH0, PUSH1, PUSHZ, macros 2020-04-22 19:03:32 -04:00
Virgil Dupras 7464c67c80 boot: fix (roll) 
It didn't work for values over 0xff. Duh!
 2020-04-22 10:47:23 -04:00
Virgil Dupras 372524fd19 Move xcomp to blocks 2020-04-21 20:30:14 -04:00
Virgil Dupras 446ce574cd Add words "'S" and "S0" 2020-04-21 07:45:23 -04:00
Virgil Dupras ae14c55feb boot: a little dereferencing to make things a bit faster 2020-04-20 23:30:08 -04:00
Virgil Dupras e569e40665 Forth-ify 2DUP 2OVER 2SWAP 
2DROP was left in boot.z80 because it's used in icore.
 2020-04-20 23:18:57 -04:00
Virgil Dupras 0438cb92fe Add word "ROLL" 2020-04-20 23:06:39 -04:00
Virgil Dupras 41ed70f8cb z80c: Add word "PICK" 2020-04-20 21:22:07 -04:00
Virgil Dupras 353d12c27d boot: inline chkRS, make next a bit faster 2020-04-20 20:28:25 -04:00
Virgil Dupras d466c6d95d emul: make stage2 load z80a from blkfs 
This allows us to remove forth/z80a.fs. Another big step towards
self-hosting!
 2020-04-19 21:31:41 -04:00
Virgil Dupras 6ae65940d2 Update bootstrap bin 
It seems that I had forgotten in an earlier commit.
 2020-04-19 20:57:09 -04:00
Virgil Dupras b062a9092a parse: use "0<" instead of "0 <" 
As I wrote in my "Clarify signed-ness" commit, "0 <" is broken.

Also, made this unit a bit more compact. The RC2014 stage1 can
really use some breathing room...
 2020-04-18 09:18:09 -04:00
Virgil Dupras eefa8e6de5 Add word "BLK!" 
as well as emulator support for it. We can now write an edited
block back to "blkfs".
 2020-04-16 17:22:18 -04:00
Virgil Dupras 5d4155aa32 Add words 1+ 2+ 1- 2- and consts 0 1 -1 
Saves quite a few bytes in the final binary.
 2020-04-15 21:29:39 -04:00
Virgil Dupras e1e634c815 boot: compaction 
It's more hassle than it seems to move the stable ABI...
 2020-04-15 20:57:46 -04:00
Virgil Dupras a56ace4d3e boot: optimize (br) 2020-04-15 20:03:56 -04:00
Virgil Dupras 0750e8d0c0 Use IY for IP instead of RAM+06 2020-04-15 17:01:15 -04:00
Virgil Dupras 2a84a426b4 Strip usages of IY register 2020-04-15 16:53:04 -04:00
Virgil Dupras 2b0186fd58 boot: make routine field 1b 
I forgot to do it earlier. NOP having an opcode of 0, it didn't have
any effect.
 2020-04-15 16:24:03 -04:00
Virgil Dupras d2ec5e271c Optimize boot binary's word execution code 
Should be significantly faster now. Less push/popping and usage of
DE instead of IY.
 2020-04-15 16:09:10 -04:00
Virgil Dupras d8de8a058a Make word routine refs 1b instead of 2 
Saves quite a bit of binary space. More than 300 bytes in forth1.bin
 2020-04-15 15:16:11 -04:00
Virgil Dupras e40c059c26 Make word routines all in the <0x100 range 2020-04-15 14:00:59 -04:00
Virgil Dupras 728e4ce123 Bring EXECUTE word outside of stable ABI 2020-04-15 13:36:28 -04:00
Virgil Dupras 2439f1ed86 Change SCMP for S= 
Remove flagsToBC boot routine.
 2020-04-15 12:19:58 -04:00
Virgil Dupras 16d5cd91de emul: don't segfault on quit when there is no blkfs 2020-04-15 10:56:49 -04:00
Virgil Dupras c40f336959 icore: extract "_pdacc" from "(parsed)" 
Makes boot binary a bit bigger, but that "_pdacc" word will be
reused in high level apps.
 2020-04-15 10:41:27 -04:00
Virgil Dupras aec19e5c87 Add word "LOAD" 2020-04-14 18:15:07 -04:00
Virgil Dupras a67101fb8b Add word "EMPTY" 2020-04-14 16:07:07 -04:00
Virgil Dupras f59cac0588 blk: first steps 2020-04-14 09:07:20 -04:00
Virgil Dupras d08a9711c5 boot: make HERE point to RAMEND instead of CURRENT 
The former was only used in the peculiar context of "/emul". The
regular case is actually HERE pointing to RAMEND on boot.
 2020-04-13 11:43:15 -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 af3db1c3cf Add word "LITA" 2020-04-11 13:13:20 -04:00
Virgil Dupras 3822182226 xcomp: shrink scope 
It seems that xcomp can't manage to reliably compile core+ units.
Let's limit the role of xcomp to z80c+icore.

I'm getting a little desperate here. I'll revisit the link.fs approach
with a new idea I had...
 2020-04-11 11:38:45 -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 a6efb65010 emul: extract capture mark from icore into xstop.fs 2020-04-10 14:16:45 -04:00
Virgil Dupras f62376bd0a boot: remove _bend 
It's not needed anymore now that the boot binary is built in one pass.
 2020-04-10 09:59:45 -04:00
Virgil Dupras 7aa1be070b emul: build boot binary in one pass 
... instead of building boot.fs, and then z80c.fs/icore.fs in separate
passes. This strengten xcomp by making it support 2 completely separate
dicts (that is, the X dict is *not* connected to the system dict. The chain
now stops at EXIT def in boot.fs).
 2020-04-10 09:55:58 -04:00
Virgil Dupras c8c337fd58 xcomp: widen scope 
We can now cross-compile core.fs.
 2020-04-10 07:53:41 -04:00
Virgil Dupras e6d3638f4f Add CURRENT* and simplify xcomp 2020-04-09 12:01:08 -04:00
Virgil Dupras 1b6286dcfe Make (find) 2-layered, the lower layer having CURRENT as a param 2020-04-09 11:20:54 -04:00
Virgil Dupras 66dc621919 xcomp: don't automatically shadow core words 2020-04-09 09:43:48 -04:00
Virgil Dupras 0c3067ed9a icore: simplify definition of ":" and ";" 2020-04-09 09:38:59 -04:00
Virgil Dupras 784b109652 So, why was ":" an immediate again? 2020-04-09 09:27:51 -04:00
Virgil Dupras afed423530 Remove memory maps 
It was a dead end. my new tentative solution is xcomp.
 2020-04-09 09:21:55 -04:00
Virgil Dupras 68f359d6c2 Add xcomp unit for cross compilation 
Memory mapping is a dead end too, solution has to be at a higher
level. xcomp is my new approach.
 2020-04-09 08:23:53 -04:00
Virgil Dupras 2a2e3a64a4 Move IMMED? from z80c to icore 2020-04-08 20:09:32 -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 64e441d059 Move SCPY from z80c to icore 
This way, it can be affected by memory mappers.
 2020-04-08 16:12:34 -04:00
Virgil Dupras ba918d0fef Add memory maps 2020-04-07 20:54:10 -04:00
Virgil Dupras 521ff84ca4 Reserve some RAM for future features 2020-04-07 17:32:04 -04:00