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MOTOROLA
7.3
Exception Priorities within an IPL
If more than one exception is pending when an instruction is executed, the interrupt with
the highest priority level is serviced first. Within a given interrupt priority level, a second
priority structure determines which interrupt is serviced when multiple interrupt requests
with the same IPL are pending.
Table 6 DSP96002 Exception Priorities within an IPL
Priority
Exception
Enabled by
highest
Hardware RESET
-
Illegal Instruction
-
Stack Error
-
(F)TRAPcc
-
IRQA (External Interrupt)
(IPR) IAL1-IAL0
IRQB (External Interrupt)
(IPR) IBL1-IBL0
IRQC (External Interrupt)
(IPR) ICL1-ICL0
Host A Command Interrupt
(HCR) HCIE
Host A Receive Data Interrupt
(HCR) HRIE
Host A Read X Memory Interrupt
(HCR) HXRE
Host A Read Y Memory Interrupt
(HCR) HYRE
Host A Read P Memory Interrupt
(HCR) HPRE
Host A Write X Memory Interrupt
(HCR) HXWE
Host A Write Y Memory Interrupt
(HCR) HYWE
Host A Write P Memory Interrupt
(HCR) HPWE
Host A Transmit Data Interrupt
(HCR) HTIE
Host B Command Interrupt
(HCR) HCIE
Host B Receive Data Interrupt
(HCR) HRIE
Host B Read X Memory Interrupt
(HCR) HXRE
Host B Read Y Memory Interrupt
(HCR) HYRE
Host B Read P Memory Interrupt
(HCR) HPRE
Host B Write X Memory Interrupt
(HCR) HXWE
Host B Write Y Memory Interrupt
(HCR) HYWE
Host B Write P Memory Interrupt
(HCR) HPWE
Host B Transmit Data Interrupt
(HCR) HTIE
DMA Channel 0 Interrupt
(DCS0) DIE0
DMA Channel 1 Interrupt
(DCS1) DIE1
Timer0 Interrupt
(TCSR0) TIE0
lowest
Timer1Interrupt
(TCSR1) TIE1
Summary of Contents for DSP96002
Page 3: ...1 2 DSP96002 USER S MANUAL MOTOROLA ...
Page 38: ...MOTOROLA DSP96002 USER S MANUAL 3 15 Figure 3 4 Modulo Arithmetic Unit Block Diagram ...
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Page 76: ...MOTOROLA DSP96002 USER S MANUAL 5 23 Figure 5 8 Address Modifier Summary ...
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Page 101: ...MOTOROLA DSP96002 USER S MANUAL 7 15 Figure 7 9 HI Block Diagram One Port ...
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Page 181: ...MOTOROLA DSP96002 USER S MANUAL 10 15 Figure 10 8 Program Address Bus FIFO ...
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