NEC 78K0 User Manual page 319

(2) Interrupt mask flag registers (MK0L, MK0H, MK1L)
The interrupt mask flags are used to enable/disable the corresponding maskable interrupt servicing.
MK0L, MK0H, and MK1L are set by a 1-bit or 8-bit memory manipulation instruction. When MK0L and MK0H are
combined to form 16-bit register MK0, they are set by a 16-bit memory manipulation instruction.
RESET input sets these registers to FFH.
Figure 15-3. Format of Interrupt Mask Flag Registers (MK0L, MK0H, MK1L)
Address: FFE4H After reset: FFH
Symbol <7>
MK0L SREMK6
Address: FFE5H After reset: FFH
Symbol <7>
MK0H TMMK010
Address: FFE6H After reset: FFH
Symbol 7
Note
MK1L 1
XXMKX
0
1
Note Be sure to set bits 6 and 7 of MK1L to 1.
CHAPTER 15 INTERRUPT FUNCTIONS
R/W
<6> <5>
PMK5 PMK4 PMK3
R/W
<6> <5>
TMMK000 TMMK50 TMMKH0
R/W
6 <5>
Note
1 WTMK KRMK
Interrupt servicing enabled
Interrupt servicing disabled
User's Manual U16227EJ2V0UD
<4> <3> <2>
PMK2 PMK1
<4> <3> <2>
TMMKH1 DUALMK0
<4> <3> <2>
TMMK51 WTIMK
Interrupt servicing control
<1> <0>
PMK0 LVIMK
<1> <0>
STMK6 SRMK6
<1> <0>
SRMK0 ADMK
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