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CHAPTER 3 INTERRUPTS
Re-setting of extended intelligent
I/O service
The extended EI
●
When data transfer continues (when the stop condition is not satisfied)
(Table 3.8-1 + Table 3.8-2) machine cycles
●
When a stop request is issued from a resource
(36 + 6 × Table 3.8-3) machine cycles
●
When the counting is completed
(Table 3.8-1 + Table 3.8-2 + 21 + 6 × Table 3.8-3) machine cycles
Table 3.8-1 Execution Time when the Extended EI
Buffer address pointer
78
Figure 3.8-2 EI
Processing by CPU
2
EI
OS initialization
(Interrupt request)
JOB execution
(Switching channels)
Processing data in buffer
2
OS execution time for each flow is described below.
ISCS SE bit
I/O address pointer
Fixed
Updated
2
OS Use Flow
Processing by EI
AND (ISE = 1)
Data transfer
2
OS Continues
"
0"
Set to
Fixed
Updated
32
34
34
36
2
OS
Normal
termination
"
"
Set to
1
Fixed
Updated
33
35
35
37
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