NEC uPD78P078 - Manual (Page 557)

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CHAPTER 25 RESET FUNCTION
Table 25-1. Hardware Status after Reset (3/3)
Hardware Status after Reset
Interrupt Request flag register (IF0L, IF0H, IF1L) 00H
Mask flag register (MK0L, MK0H, MK1L) FFH
Priority specify flag register FFH
(PR0L, PR0H, PR1L)
External interrupt mode register 00H
(INTM0, INTM1)
Key return mode register (KRM) 02H
Sampling clock select register (SCS) 00H