66 lines
716 B
NASM
66 lines
716 B
NASM
.org 0xE000
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mov sp,#STACK
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MAIN_LOOP:
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MOV DL,#0xF0
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DELAY11:
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MOV AX,#0x0000
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DELAY1:
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INC AX
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JNZ DELAY1
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INC DL
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JNZ DELAY11
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MOV AL,#0x01
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out byte #0xB0
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MOV SI,#RESERVED
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MOV DI,#RESERVED
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MOV AL,#0x68 ; 'h'
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#STOSB
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#MOV AL,#0x00
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#MOV AL,[SI]
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#MOV AH,#0x02
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#MOV DL,AL
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#INT #0x21
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out byte #0xA5
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MOV AL,#0x65
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out byte #0xA5
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MOV AL,#0x6c
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out byte #0xA5
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MOV AL,#0x6c
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out byte #0xA5
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MOV AL,#0x6f
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out byte #0xA5
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MOV AL,#0x20
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out byte #0xA5
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MOV DL,#0xF0
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DELAY21:
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MOV AX,#0x0000
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DELAY2:
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INC AX
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JNZ DELAY2
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INC DL
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JNZ DELAY21
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MOV AL,#0x00
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out byte #0xB0
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MOV AX,#0xE000
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JMP AX
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RESERVED: DB 0x48 ; 'H'
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.BLKB 100
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STACK:
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#INCLUDE dos_layer.asm
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.ORG 0xFFF0
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MOV AX,#0xE000
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JMP AX
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.ORG 0xFFFF
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DB 0x00 ;Make sure a full 64KiB image
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