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