汇编总是提醒：error a2008::in instruction

assume cs:code,ds:data,ss:stack

data segment
db 'welcome to masm!'
db02h,24h,71h
data ends

stack segment
dw 8 dup(0)
stack ends

code segment
start:mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,10h
xor bx,bx
mov ax,0b872h
mov cx,3
s3:push cx
push ax
push bx
mov es,ax
mov si,0
mov di,0
mov cx,10h
s1:mov al,ds:[si]
mov es:[di],al
inc si
add di,2
loop s1
mov di,1
pop bx
mov al,ds:10h[bx]
inc bx
mov cx,10h
s2:mov es:[di],al
add di,2
loop s2
pop ax
add ax,0ah
pop cx
loop s3
mov 4c00h
int 21h
code ends
end start

两处错误已经消除，正确程序如下：

assume cs:code,ds:data,ss:stack
data segment
db 'welcome to masm!'
db 02h,24h,71h
data ends
stack segment
dw 8 dup(0)
stack ends
code segment
start:mov ax,data
mov ds,ax
mov ax,stack
mov ss,ax
mov sp,10h
xor bx,bx
mov ax,0b872h
mov cx,3
s3:push cx
push ax
push bx
mov es,ax
mov si,0
mov di,0
mov cx,10h
s1:mov al,ds:[si]
mov es:[di],al
inc si
add di,2
loop s1
mov di,1
pop bx
mov al,ds:10h[bx]
inc bx
mov cx,10h
s2:mov es:[di],al
add di,2
loop s2
pop ax
add ax,0ah
pop cx
loop s3
mov ax, 4c00h
int 21h
code ends
end start

本程序，显示三行彩色文字。

rowsizeb = ($ - tableb) ... push rowsizeb 这种语句在 radasm 上是可以通过编译的 ;------------------------------------------- 另外: 建议在 calc_row_sum 子程序中,让编译器自动平衡堆栈(与您的问题无关,只是建议)

mov 4c00h 这是啥？