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Rabbit 6000 User’s Manual
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84
6.2 Operation
To ensure proper operation, all interrupt handler routines should be written according to the following
guidelines.
•
Push all registers to be used by the routine onto the stack before use, and pop them off the stack before
returning from the ISR.
•
Keep the ISR as short and fast as possible. The use of assembly code is strongly recommended.
•
If the ISR will run for some time, lower the interrupt priority as soon as possible within the ISR to allow
other interrupts to occur.
•
A number of special rules apply to interrupts when operating in the system/user mode; please see the
appropriate chapter for more details.
6.3 Interrupt Tables
Table 6-1 shows the structure of the internal interrupt vector table. The first column is the vector address
offset within the table. The second column shows the vectors in the first 256 bytes of the table, and the
third column shows the vectors in the second 256 bytes. Interrupts that are new to the Rabbit 6000 are
highlighted as such.
Table 6-1. Internal Interrupt Vector Table Structure
Offset
Offset
Offset
0x00
Periodic Interrupt
Network Port C (Wi-Fi)
0x10
Secondary Watchdog
Network Port D (USB)
0x20
RST 10
—
0x30
RST 18
FIMA
0x40
RST20
FIMB
0x50
RST 28
I
2
C
0x60
Syscall Instruction
8-Channel A/D Converter
0x70
RST 38
PWM
0x80
Slave Port
Sys/User Mode Violation
0x90
Write Protect Violation
Quadrature Decoder
0xA0
Timer A
Input Capture
0xB0
Timer B
Stack Limit Violation
0xC0
Serial Port A
Serial Port E
0xD0
Serial Port B
Serial Port F
0xE0
Serial Port C
Network Port B (Ethernet)
0xF0
Serial Port D
Timer C
NEW
NEW
NEW
NEW
NEW
NEW
Summary of Contents for 6000
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