Motorola M68000 User Manual page 91

Freescale Semiconductor, Inc.
requests from peripheral devices for processor action; the bus error and reset inputs are
used for access control and processor restart. The internal exceptions are generated by
instructions, address errors, or tracing. The trap (TRAP), trap on overflow (TRAPV), check
register against bounds (CHK), and divide (DIV) instructions can generate exceptions as
part of their instruction execution. In addition, illegal instructions, word fetches from odd
addresses, and privilege violations cause exceptions. Tracing is similar to a very high
priority, internally generated interrupt following each instruction.
6-6 M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL MOTOROLA
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