DOS .equ 0x5 _CONOUT .equ 0x02 .area _CODE JP START .db 0x0D ; type hello.com .db 0x0D,0x0A .str "Example hello world executable." .db 0x0D,0x0A .db 0x1A ; end txt START: LD HL,#TXT_HELLO CALL PUT_TXT LD HL,#TXT_HELLO_SRC CALL PUT_TXT RET PUT_TXT: LD A,(HL) CP #0x1D RET Z LD E,A LD C,#2 PUSH HL CALL DOS POP HL INC HL JR PUT_TXT TXT_HELLO: .str "Hello world..." .db 0x1D TXT_HELLO_SRC: .str "from asm." .db 0x0D,0x0A .db 0x1D .area _DATA