Print ascii character on screen

问题

I am writing a bootloader in assembly (NASM instruction set), but for some reason it doesn't show any letter.

[BITS 16]
[ORG 0x7C00]

JMP $ 

MOV AL, 0x65
MOV AH, 0x0E
MOV BL, 0x07
MOV BH, 0x00

INT 0x10

TIMES 510 - ($ - $$) db 0
DW 0xAA55

All I see is the _ cursor.

回答1:

JMP $

Jumps to itself. Removing it will let the other code run

来源：https://stackoverflow.com/questions/38085205/print-ascii-character-on-screen