6F8C0845
145
B
Appendix B READ Instruction/
WRITE Instruction Execution Time
N: Number of words to transfer I/O access time = 8.72
µ
s
I/O access time = 8.72
µ
s
Table B-1 MREAD Instruction/MWRITE Instruction Execution Time (
µ
s)
MREAD Instruction
14.72 (4+N) x I/O access time
MWRITE Instruction
14.48 (4+N) x I/O access time
Table B-2 Maximum Execution Time for DN611 Access (ms)
(128 words for input/output)
MREAD Instruction
1.17
MWRITE Instruction
1.12
Total
2.29