车轮胎英语怎么说:这段汇编的两个地方为什么错了,怎么改??

;----------------------------------------------------------------------
;Program:
;Created by:
;Finished Date & Time:
;----------------------------------------------------------------------

SSEG SEGMENT PARA STACK 'stack'
dw 100h dup(0) ;Resize the stack by changing the number '100'
SSEG ENDS

DSEG SEGMENT
STR DB 'What is you name?',0DH
COUNT EQU $-STR
NUM DB 0;TO DO: Add your program's data here

DSEG ENDS

CSEG SEGMENT
assume cs:CSEG, ds:DSEG, es:DSEG, ss:SSEG

CALC PROC FAR
PUSH DS
XOR AX ;错误1
PUSH AX
MOV AX,DSEG
MOV DS,AX
MOV ES,AX
MOV AX,STACK ;错误2
MOV SS,AX
LEA DI,STR
MOV CX,COUNT-1
CLD
MOV AL,' '
SCAN_S: SCAS BYTE PTR STR
JE SKIP
INC NUM
SKIP: LOOP SCAN_S
RET
CALC ENDP
CSEG ENDS
END CALC
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还有 为什么要用PROC???不用不行吗?
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