66 lines
808 B
NASM
66 lines
808 B
NASM
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console_input:
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xor ax, ax
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int 0x16
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; loop until we got >0
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test al, al
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jz console_input
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push ax
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push bx
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jmp console_output.shortcut
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console_output:
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push ax
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push bx
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mov al, dl
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.shortcut:
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mov ah, 0x0e
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xor bx, bx
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int 0x10
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pop bx
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pop ax
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ret
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print_string:
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push si
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mov si, dx
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.loop:
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mov dl, BYTE [si]
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cmp dl, '$'
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jz .end
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call console_output
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inc si
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jmp .loop
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.end:
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pop si
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ret
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read_buffer:
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push bx
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push si
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xor bx, bx
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mov si, dx
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.loop:
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call console_input
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cmp al, 0x0D
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je .end
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cmp al, 8
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je .bs
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mov [si+bx+2], al
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inc bx
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cmp bl, [si]
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jc .loop
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.end:
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mov byte [si+bx+2], 0x0D
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mov [si+1], bl
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pop si
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pop bx
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ret
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.bs:
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test bx, bx
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jz .loop
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mov dl, 0x20
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call console_output
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mov dl, 8
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call console_output
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dec bx
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jmp .loop
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