IBM uPD78082 User Manual
Page 201
178
CHAPTER 12 INTERRUPT FUNCTION
Cautions 1. If a watchdog timer is used in watchdog timer mode 1, set TMPR4 flag to 1.
2. Set 1 to the bits 1, 5 to 7 of PR0L and bits 0, 1, 5 to 7 of PR0H and PR1L.
(3) Priority specify flag registers (PR0L, PR0H, and PR1L)
The priority specify flag is used to set the corresponding maskable interrupt priority orders.
PR0L, PR0H, and PR1L are set with a 1-bit or 8-bit memory manipulation instruction. If PR0L and PR0H are
used as a 16-bit register PR0, use a 16-bit memory manipulation instruction for the setting.
RESET input sets these registers to FFH.
Figure 12-4. Priority Specify Flag Register Format
7
1
Symbol
PR0L
6
1
5
1
4
PPR3
3
PPR2
2
PPR1
1
1
0
TMPR4
Address
FFE8H
FFH
After
Reset
R/W
R/W
0
1
Priority Level Selection
High priority level
Low priority level
7
1
PR0H
6
1
5
1
4
STPR
3
SRPR
2
SERPR
1
1
0
1
7
1
PR1L
6
1
5
1
4
TMPR6
3
TMPR5
2
ADPR
1
1
0
1
FFE9H
FFH
R/W
FFEAH
FFH
R/W
Ч Ч
PR
Ч