Integer Instructions
4-64 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA
CALLM Call Module CALLM
(MC68020)
Operation: Save Current Module State on Stack; Load New Module State from
Destination
Assembler
Syntax: CALLM # < data > , < ea >
Attributes: Unsized
Description: The effective address of the instruction is the location of an external module
descriptor. A module frame is created on the top of the stack, and the current module
state is saved in the frame. The immediate operand specifies the number of bytes of
arguments to be passed to the called module. A new module state is loaded from the
descriptor addressed by the effective address.
Condition Codes:
Not affected.
Instruction Format:
1514131211109876543210
0000011011
EFFECTIVE ADDRESS
MODE REGISTER
00000000 ARGUMENT COUNT
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