z86c96 ZiLOG Semiconductor, z86c96 Datasheet - Page 37

• Manufacturer Part Number: z86c96
• Description: Cmos Z8 Microcontroller
• Manufacturer: ZiLOG Semiconductor

Zilog
DS97Z8X1600
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
R252 FLAGS
D7 D6 D5 D4 D3 D2 D1 D0
Figure 38. Interrupt Request Register
Figure 39. Interrupt Mask Register
Figure 40. Flag Register
(FAH: Read/Write)
(FBH: Read/Write)
(FCH: Read/Write)
IRQ0 = P32 Input (D0 = IRQ0)
IRQ1 = P33 Input
IRQ2 = P31 Input
IRQ3 = P30 Input, Serial Input
IRQ4 = T0
IRQ5 = T1
Reserved (Must be 0)
1
1
1
User Flag F1
User Flag F2
Half Carry Flag
Decimal Adjust Flag
Overflow Flag
Sign Flag
Zero Flag
Carry Flag
Enables IRQ5-IRQ0
(D
Enables RAM Protect
Enables Interrupts
0
= IRQ0)
Serial Output
PS003501-0301
P R E L I M I N A R Y
R255 SPL
R254 SPH
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
R253 RP
D7 D6 D5 D4 D3 D2 D1 D0
Figure 41. Register Pointer Register
Figure 42. Stack Pointer Register
Figure 43. Stack Pointer Register
(FDH: Read/Write)
(FEH: Read/Write)
(FFH: Read/Write)
CMOS Z8 Microcontroller
Expanded Register Pointer
Working Register Pointer
Stack Pointer Lower
Byte (SP
Stack Pointer Upper
Byte (SP
Z86C61/62/96
7
15
- SP
- SP
0
)
8
)
37
1