31 lines
647 B
NASM
31 lines
647 B
NASM
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TITLE ABSOLUTE - helper for assembly routines
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;***
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; ABSOLUTE - Helper for calling BASIC interpreter assembly routines
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;
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; Just used to clear information from the stack to various registers and
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; memory locations.
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;***
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CODE SEGMENT BYTE PUBLIC 'CODE'
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ASSUME CS:CODE
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PUBLIC ABSOLUTE
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ABSOLUTE PROC FAR
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POP DI ;return offset
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POP SI ;return segment
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POP BX ;address of routine offset
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PUSH SI ;restack return segment
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PUSH DI ;restack return offset
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PUSH DS:[0] ;stack DEF SEG segment
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PUSH [BX] ;stack routine offset
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RET ;far return to start of called routine
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ABSOLUTE ENDP
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CODE ENDS
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END
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