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collapseos/emul/xcomp.fs
Virgil Dupras a2f164ecc3 emul: bootstrap to stage2 from within Collapse OS!
Big bootstrapping change which greatly reduces the role of the modern
operating system in the bootstrapping process.
2020-04-26 10:24:09 -04:00

25 lines
443 B
Forth

0xe800 CONSTANT RAMSTART
0xf000 CONSTANT RS_ADDR
212 LOAD ( z80 assembler )
262 LOAD ( xcomp )
: CODE XCODE ;
: IMMEDIATE XIMM ;
: (entry) (xentry) ;
: : [ ' X: , ] ;
CURRENT @ XCURRENT !
H@ 256 /MOD 2 PC! 2 PC!
H@ XOFF !
282 LOAD ( boot.z80 )
393 LOAD ( icore )
(entry) _
( Update LATEST )
H@ XOFF @ - XOFF @ 8 + !
," CURRENT @ HERE ! "
," : EMIT 0 PC! ; "
," : KEY 0 PC@ ; "
422 470 XPACKR
," ' KEY 12 RAM+ ! "
H@ 256 /MOD 2 PC! 2 PC!