贴一段simense ACCU1的注释，这样好理解一点

Contents of ACCU 1 

Contents of ACCU 1 ACCU1-H-H ACCU1-H-L ACCU1-L-H ACCU1-L-L

before execution of load instruction XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX

after execution of L MB10 (L <Byte>) 00000000 00000000 00000000 <MB10>

after execution of L MW10  (L <word>) 00000000 00000000 <MB10> <MB11>

after execution of L MD10  (L <double word>) <MB10> <MB11> <MB12> <MB13>