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recipes/pcat: now tested on real hardware!

This commit is contained in:
Virgil Dupras 2020-06-13 11:47:32 -04:00
parent f9d04848bd
commit b037c86598
2 changed files with 4 additions and 3 deletions
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1
blk/753
View File

@ -5,6 +5,7 @@
( no argument, flow ops are special )
: JMP8, 0xeb A, ; : JMP16, 0xe9 A, ; : JZ, 0x74 A, ;
: LODSB, 0xac A, ; : CLI, 0xfa A, ; : HLT, 0xf4 A, ;
: STI, 0xfb A, ;
: ORrr, 0x08 A, MODRMrr A, ;
: XORxx, 0x31 A, MODRMrr A, ;
: CLD, 0xfc A, ; : STD, 0xfd A, ;

6
blk/811
View File

@ -1,9 +1,9 @@
: _filler 510 H@ ORG @ - DO 0 A, LOOP 0x55 A, 0xaa A, ;
H@ ORG ! 0x7c00 BIN( ! ( BIOS loads boot bin at 0x7c00 )
JMP8, L1 FWR8 ( start )
ORG @ 0x25 + HERE ! ( bypass BPB )
L2 BSET ( msg ) ," Hello, World!" 0 A,
L1 FSET ( start )
CLI, CLD, AX AX XORxx, DS AX MOVsx,
CLI, CLD, AX AX XORxx, DS AX MOVsx, STI,
AH 0 MOVri, AL 2 MOVri, ( 80x25 BW video mode ) 0x10 INT,
SI L2 @ ( msg ) MOVrI, AH 0x0e MOVri, ( print char )
L1 BSET ( loop ) LODSB, AL AL ORrr, ( end of str? )
@ -11,4 +11,4 @@ JZ, L2 FWR8 ( next ) 0x10 INT, ( print char )
JMP8, L1 ( loop ) BWR
L2 FSET ( next ) AH 0 MOVri, 0x16 INT, ( read kbd )
AH 0x0e MOVri, 0x10 INT, ( spit read char ) HLT, ( done )
_filler
ORG @ 0x1fe + HERE ! 0x55 A, 0xaa A,