CIO-32
10
5. Zilog CIO Z8536
The CIO-32 IP contains two Z8536 devices, and the following description gives you
the features of these CIO controllers.
Each Z8536 device provides two general-purpose 8-bit ports (port A-B or C-D of the
CIO-32 respectively), one special-purpose 4-bit port (port E or F of the CIO-32
respectively), and three 16-bit counter/timers (timer 1 to 6 of the CIO-32).
Zilog Z8536
CIO(0)
Port A
Port B
Timers 1-2
Port C
Timer 3
IRQ
Control
8-bit
8-bit
4-bit
Zilog Z8536
CIO(1)
Port A
Port B
Timers 1-2
Port C
Timer 3
IRQ
Control
8-bit
8-bit
4-bit
IRQ0
IRQ1
Logic control
IndustryPack™
I/O interface
IndustryPack™
logic interface
Port A
Port B
Timers 1-2
Port E
Timer 3
Port C
Port D
Timers 4-5
Port F
Timer 6
Each CIO controller provides an interrupt connected to IRQ0 and IRQ1 of the IP logic
interface respectively.
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