Z86D86 Datasheet, PDF (39/80 Pages) Zilog, Inc. – 28-Pin Low-Voltage OTP Microcontroller

Z86D86
28-Pin Low-Voltage OTP Microcontroller
31
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
1 = Enables IRQ5–IRQ0
(D0 = IRQ0)
Reserved (must be 0)
0 = Master Interrupt Disable *
1 = Master Interrupt Enable **
* Default setting after reset
** Only by using E1, D1 instruction. D1 is required before changing the IMR register.
Figure 26. Interrupt Mask Register—FBH: Read/Write
R252 Flags
D7 D6 D5 D4 D3 D2 D1 D0
User Flag F1
User Flag F2
Half Carry Flag
Decimal Adjust Flag
Overflow Flag
Sign Flag
Zero Flag
Carry Flag
Figure 27. Flag Register—FCH: Read/Write
PS008905-0105
PRELIMINARY