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; copied from c:\emu8086\emu8086.inc
GET_STRING      PROC    NEAR
PUSH    AX
PUSH    CX
PUSH    DI
PUSH    DX
 
MOV     CX, 0                   ; char counter.
 
CMP     DX, 1                   ; buffer too small?
JBE     empty_buffer            ;
 
DEC     DX                      ; reserve space for last zero.
 
 
;============================
; loop to get and processes key presses:
 
wait_for_key:
 
MOV     AH, 0                   ; get pressed key.
INT     16h
 
CMP     AL, 13                  ; 'RETURN' pressed?
JZ      exit
 
 
CMP     AL, 8                   ; 'BACKSPACE' pressed?
JNE     add_to_buffer
JCXZ    wait_for_key            ; nothing to remove!
DEC     CX
DEC     DI
PUTC    8                       ; backspace.
PUTC    ' '                     ; clear position.
PUTC    8                       ; backspace again.
JMP     wait_for_key
 
add_to_buffer:
 
        CMP     CX, DX          ; buffer is full?
        JAE     wait_for_key    ; if so wait for 'BACKSPACE' or 'RETURN'...
 
        MOV     [DI], AL
        INC     DI
        INC     CX
 
        ; print the key:
        MOV     AH, 0Eh
        INT     10h
 
JMP     wait_for_key
;============================
 
exit:
 
; terminate by null:
MOV     [DI], 0
 
empty_buffer:
 
POP     DX
POP     DI
POP     CX
POP     AX
RET
GET_STRING      ENDP
 

prog.s: Assembler messages:
prog.s:3: Error: no such instruction: `copied from c:\emu8086\emu8086.inc'
prog.s:4: Error: no such instruction: `get_string PROC NEAR'
prog.s:10: Error: too many memory references for `mov'
prog.s:10: Error: no such instruction: `char counter.'
prog.s:12: Error: too many memory references for `cmp'
prog.s:12: Error: no such instruction: `buffer too small?'
prog.s:15: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
prog.s:15: Error: no such instruction: `reserve space for last zero.'
prog.s:18: Error: junk at end of line, first unrecognized character is `='
prog.s:19: Error: junk `get and processes key presses:' after expression
prog.s:23: Error: too many memory references for `mov'
prog.s:23: Error: no such instruction: `get pressed key.'
prog.s:24: Error: junk `h' after expression
prog.s:24: Error: operand size mismatch for `int'
prog.s:26: Error: too many memory references for `cmp'
prog.s:26: Error: junk at end of line, first unrecognized character is `8'
prog.s:30: Error: too many memory references for `cmp'
prog.s:30: Error: junk at end of line, first unrecognized character is `6'
prog.s:32: Error: no such instruction: `nothing to remove!'
prog.s:33: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
prog.s:34: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
prog.s:35: Error: no such instruction: `putc 8'
prog.s:35: Error: no such instruction: `backspace.'
prog.s:36: Error: no such instruction: `putc 32'
prog.s:36: Error: no such instruction: `clear position.'
prog.s:37: Error: no such instruction: `putc 8'
prog.s:37: Error: no such instruction: `backspace again.'
prog.s:42: Error: too many memory references for `cmp'
prog.s:42: Error: no such instruction: `buffer is full?'
prog.s:43: Error: no such instruction: `if so wait for 66ACKSPACE32or 82ETURN46..'
prog.s:45: Error: invalid char '[' beginning operand 1 `[DI]'
prog.s:46: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
prog.s:47: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
prog.s:49: Error: no such instruction: `print the key:'
prog.s:50: Error: too many memory references for `mov'
prog.s:51: Error: junk `h' after expression
prog.s:51: Error: operand size mismatch for `int'
prog.s:54: Error: junk at end of line, first unrecognized character is `='
prog.s:58: Error: no such instruction: `terminate by null:'
prog.s:59: Error: invalid char '[' beginning operand 1 `[DI]'
prog.s:68: Error: no such instruction: `get_string ENDP'

Standard output is empty