| M8000
|----||---------------------------(C238 K8)
| |
| |-----------------------(C239 K8)
| |
| |-----------------------(C240 K8)
| |
| |------------------[DMOV C238 D438]
| |
| |------------------[DMOV C239 D440]
| |
| |------------------[DMOV C240 D442]
运行开始,m8000接通.计数器c238,c239,c240记数到8.然后分别把数据送到数据寄存器中.