Rabbit 6000 User Manual page 105

Slave Port Control Register
Bit(s) Value
7 0
1
6:5 Read
Write
4:2 000
001
010
011
100
101
110
111
1:0 00
01
10
11
Rabbit 6000 User's Manual
Program fetch as a function of the SMODE pins.
Ignore the SMODE pins program fetch function.
These bits report the state of the SMODE pins.
These bits are ignored and should be written with zero.
Disable the slave port. Parallel Port A is a byte-wide input port.
Disable the slave port. Parallel Port A is a byte-wide output port.
Enable the slave port, with /SCS from Parallel Port E bit 7.
Enable the external I/O bus. Parallel Port A is used for the data bus and
Parallel Port B[7:2] is used for the address bus.
This bit combination is reserved and should not be used.
This bit combination is reserved and should not be used.
Enable the slave port, with /SCS from Parallel Port B bit 6.
Enable the external I/O bus. Parallel Port A is used for the data bus and
Parallel Port B[7:0] is used for the address bus.
Slave port interrupts are disabled.
Slave port interrupts use Interrupt Priority 1.
Slave port interrupts use Interrupt Priority 2.
Slave port interrupts use Interrupt Priority 3.
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(SPCR) (Address = 0x0024)
Description
105