mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-27 23:08:06 +11:00
27 lines
820 B
Forth
27 lines
820 B
Forth
0xff00 CONSTANT RS_ADDR
|
|
0xfffa CONSTANT PS_ADDR
|
|
RS_ADDR 0x80 - CONSTANT SYSVARS
|
|
30 LOAD ( 8086 asm )
|
|
262 LOAD ( xcomp ) 270 LOAD ( xcomp overrides )
|
|
445 461 LOADR ( 8086 boot code )
|
|
353 LOAD ( xcomp core low )
|
|
CODE (emit) AX POPx, 1 INT, ;CODE
|
|
CODE (key) 2 INT, AH 0 MOVri, AX PUSHx, ;CODE
|
|
: COLS 80 ; : LINES 25 ;
|
|
CODE AT-XY ( x y ) BX POPx, AX POPx, 3 INT, ;CODE
|
|
CODE _ BX POPx, AX POPx, 4 INT, ;CODE
|
|
: EFS@ BLK( _ ;
|
|
CODE _ BX POPx, AX POPx, 5 INT, ;CODE
|
|
: EFS! BLK( _ ;
|
|
( 8086 port doesn't define PC@ and PC!, but test harness uses
|
|
it. Our forth binary uses INT 6 for retcode. )
|
|
CODE PC! AX POPx, ( discard ) AX POPx, 6 INT, ;CODE
|
|
380 LOAD ( xcomp core high )
|
|
(entry) _ ( Update LATEST ) PC ORG @ 8 + !
|
|
," BLK$ "
|
|
," ' EFS@ BLK@* ! "
|
|
," ' EFS! BLK!* ! "
|
|
EOT,
|
|
ORG @ 256 /MOD 2 PC! 2 PC!
|
|
H@ 256 /MOD 2 PC! 2 PC!
|