上段程序中断比较多，也可以只用2个中断，一个发送，一个接收

MAIN:
LD SM0.1
MOVB 250, SMB34
ATCH INT_0:INT0, 10
ATCH INT_0:INT0, 9
MOVB 0, MB0
ENI


INT_0:

1
LDB= MB0, 0
DTCH 10
XMT VB100, 0
INCB MB0

2
LDB= MB1, 1
XMT VB200, 0
INCB MB0

3
LDB= MB1, 2
XMT VB300, 0
INCB MB0

4
LDB= MB1, 3
XMT VB400, 0
INCB MB0

5
LDB= MB1, 4
XMT VB500, 0
INCB MB0

6
LDB= MB1, 5
XMT VB600, 0
INCB MB0
ATCH INT_1:INT1, 9


INT_1:I
LD SM0.0
RCV VB2000, 0