Z86C02 Datasheet, PDF (34/37 Pages) Zilog, Inc. – Two On-Board Comparators

Z86C02/E02/L02
Cost Effective, 512-Byte ROM CMOS Z8^® Microcontrollers
Z8 CONTROL REGISTERS (Continued)
Zilog
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
IRQ0 = P32 Input ↓
IRQ1 = P33 Input ↓
IRQ2 = P31 Input ↓
IRQ3 = P32 Input ↑
IRQ4 = Reserved
IRQ5 = T1
Reserved (Must be 0.)
R253 RP
D7 D6 D5 D4 D3 D2 D1 D0
Reserved (Must be 0.)
Register Pointer
Figure 35. Register Pointer FD_H: Read/Write)
Figure 32. Interrupt Request Register
(FA_H: Read/Write)
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
1 Enables IRQ5-IRQ0
(D ₀ = IRQ0)
Reserved (Must be 0.)
1 Enables Interrupts
Figure 33. Interrupt Mask Register (FB_H: 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
R255 SPL
D7 D6 D5 D4 D3 D2 D1 D0
Stack Pointer Lower
Byte (SP ₇ - SP ₀ )
Figure 36. Stack Pointer (FF_H: Read/Write)
Figure 34. Flag Register (FC_H: Read/Write)
34
PRELIMINARY
DS96DZ80301