Analog Devices adsp-2100 User Manual

3Program Control
3 – 17
ICNTL Interrupt Nesting Enable bit = 0 (nesting disabled)
Interrupt IMASK contents before IMASK contents entering
level serviced (pushed on stack) interrupt service routine
0 (low) ijklmn 000000
1 ijklmn 000000
2 ijklmn 000000
3 ijklmn 000000
4 ijklmn 000000
5 (high) ijklmn 000000
ICNTL Interrupt Nesting Enable bit = 1 (nesting enabled)
Interrupt IMASK contents before IMASK contents entering
level serviced (pushed on stack) interrupt service routine
0 (low) ijklmn ijklm0
1 ijklmn ijkl00
2 ijklmn ijk000
3 ijklmn ij0000
4 ijklmn i00000
5 (high) ijklmn 000000
(“ijklmn” represents any pattern of ones and zeroes)
Table 3.8 IMASK Entering Interrupt Service Routines (ADSP-2101 example)
3.4.2.3 Global Enable/Disable for Interrupts
Global interrupt enable and disable instructions are available on the
ADSP-2171, ADSP-2181, and ADSP-21msp58/59 processors:
ENA INTS;
DIS INTS;
Interrupts are enabled by default after reset. The DIS INTS instruction
causes all interrupts (including powerdown) to be masked out regardless
of the contents of IMASK. The ENA INTS instruction allows all
unmasked interrupts to be serviced again.
Disabling interrupts does not affect serial port autobuffering.

Analog Devices adsp-2100 Specifications

General

Brand	Analog Devices
Model	adsp-2100
Category	Computer Hardware
Language	English