14
EPSON
E0C88832/88862 TECHNICAL MANUAL
3 CPU AND MEMORY CONFIGURATION
Table 3.3.1 Vector addresses and
exception processing factors
3.4 CC
(Customized Condition Flag)
The E0C88832/88862 does not use the customized
condition flag (CC) in the core CPU. Accordingly, it
cannot be used as a branching condition for the
conditional branching instruction (JRS, CARS).
Vector
address
000000H
000002H
000004H
000006H
000008H
00000AH
00000CH
00000EH
000010H
000012H
000014H
000016H
000018H
00001AH
00001CH
00001EH
000020H
000022H
000024H
000026H
:
0000FEH
Priority
High
↑
↓
Low
No
priority
rating
Exception processing factor
Reset
Zero division
Watchdog timer (NMI)
Programmable timer 1 interrupt
Programmable timer 0 interrupt
K10 input interrupt
K04–K07 input interrupt
K00–K03 input interrupt
Serial I/F error interrupt
Serial I/F receiving complete interrupt
Serial I/F transmitting complete interrupt
Stopwatch timer 100 Hz interrupt
Stopwatch timer 10 Hz interrupt
Stopwatch timer 1 Hz interrupt
Clock timer 32 Hz interrupt
Clock timer 8 Hz interrupt
Clock timer 2 Hz interrupt
Clock timer 1 Hz interrupt
System reserved (cannot be used)
Software interrupt
For each vector address and the address after it, the
start address of the exception processing routine is
written into the subordinate and super ordinate
sequence. When an exception processing factor is
generated, the exception processing routine is
executed starting from the recorded address.
When multiple exception processing factors are
generated at the same time, execution starts with
the highest priority item.
The priority sequence shown in Table 3.3.1 assumes
that the interrupt priority levels are all the same.
The interrupt priority levels can be set by software
in each system. (See Section 5.14 "Interrupt and
Standby Status".)
Note: For exception processing other than reset,
SC (system condition flag) and PC (program
counter) are evacuated to the stack and
branches to the exception processing
routines. Consequently, when returning to
the main routine from exception processing
routines, please use the RETE instruction.
See the "E0C88 Core CPU Manual" for information
on CPU operations when an exception processing
factor is generated.
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