When a macro instruction
is invoked, the current value of the program counter is pushed on the macro stack.
As can be seen from those figures, the processor is divided into six major sections: the instruction bus interface (including an instruction prefetch buffer), the macro instruction
unit, the instruction control unit, the floating point unit, the integer execution unit, and the data bus interface.
22 mins LESSON 14 software, assemblers, source decks, object decks, review, macro instructions
, compilers, Cobol, Fortran, review.
are entered as labels in consecutive cells of a column.
The menu range consists of at least three rows: the first row contains the options, the second row contains the explanation of each option, and the remaining rows contain the macro instructions
to be executed if the option is selected.
For example, if the user chooses the option check, the macro will branch to a range named "check" for further macro instructions
. BRANCH CHECK)