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collapseos
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14 Commits

Author SHA1 Message Date
Virgil Dupras 94ed01086a pcat: move drivers and xcomp to blkfs 2020-06-22 14:21:25 -04:00
Virgil Dupras 60ecab314e pcat: we have PROMPT! 
Not working, but we do get that sweet "CollapseOS".
 2020-06-20 16:58:48 -04:00
Virgil Dupras 6bc1738bfd pcat: implement (loop) 
8086 asm is a lot terser than z80... Those indirect memory operations
are very handy.
 2020-06-18 15:01:04 -04:00
Virgil Dupras eed817b517 pcat: adapt to word type change 2020-06-18 06:50:32 -04:00
Virgil Dupras bc8144b4be pcat: implement (br) and (br?) 2020-06-16 22:10:32 -04:00
Virgil Dupras 49979404a5 pcat: implement number literals 2020-06-16 21:34:35 -04:00
Virgil Dupras a92864a595 pcat: implement RSP mechanism in execution model 2020-06-16 20:41:53 -04:00
Virgil Dupras 16d6a0b377 pcat: begin implementing compiledWord/next 2020-06-16 19:05:36 -04:00
Virgil Dupras d8d2e05eb2 pcat: make find compare strings 
find is the biggest chunk of logic of the boot code. The 8086 version
is significantly terser than the z80 one. REP/CMPS helps...
 2020-06-15 06:23:19 -04:00
Virgil Dupras 8c452f5add pcat: begin implementing find 
Not comparing strings yet. Without asm tooling support, it's a big
chunk to swallow at once. It's progressing well!
 2020-06-14 21:52:58 -04:00
Virgil Dupras 3be30e24bb pcat: implement execute and nativeWord 2020-06-14 15:27:26 -04:00
Virgil Dupras bf0e999f8e pcat: read LATEST and jump to it 2020-06-14 14:51:32 -04:00
Virgil Dupras a72322df31 pcat: begin structuring around words 2020-06-14 14:15:44 -04:00
Virgil Dupras 2b7abf802f pcat: begin porting forth 
I'm not sure yet where I'm going, but I'm not going to build the
8086 port from the ground up like I did with the z80, that is,
making is sustain itself and eventually merge its forth code with
core words. That would be too much work which would then be thrown
out (all those words I'll initially have to implement in asm which
are already implemented in Forth).

What I *think* I can do is build a mirror version of z80 boot code
and cross-compile it from the z80. This means it has to follow z80
stable ABI.

Nope, I'm not sure where I'm going...
 2020-06-13 21:37:54 -04:00