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Flags Used for IOWR Instruction and Data Transfer
Section 10-6
10-6 Flags Used for IOWR Instruction and Data Transfer
This section shows the timing of each flag turned ON or OFF while the IOWR
instruction or data transfer is executed.
The Busy Flag does not change immediately after the IOWR instruction or
data transfer is executed.
IOWR Instruction Executed
Data Transfer Executed
IOWR
execution
PC's cycle
Program
execution
Com
mon
Com
mon
I/O
RF
Com
mon
I/O
RF
I/O
RF
Program
execution
Program
execution
Unit Busy (word n+6 bit 07)
Data Transfer Completion
(word n+6 bit 14)
or
Unit Busy (word n+6 bit 07)
Data Transfer Completion
(word n+6 bit 14)
I/O
refresh
Data transfer
Data Transfer (word n bit 03)
Unit Busy (word n+6 bit 07)
Data Transfer Completion
(word n+6 bit 14)
or
Unit Busy (word n+6 bit 07)
Data Transfer Completion
(word n+6 bit 14)
I/O
refresh
I/O
refresh
I/O
refresh
PC's cycle
Summary of Contents for C200H-CT021
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