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174 Appendix A:
174
Appendix A: The Automatic Memory Stack
The Automatic Memory Stack
174
174
Appendix A:
Appendix A:
The Automatic Memory Stack
The Automatic Memory Stack
When an arithmetic operation or q is performed, the answer is placed in the
X-register, the number formerly in the X-register is copied into the LAST X register,
drops
and the stack
. When the stack drops, the number in the Z-register is copied
into the Y-register, and the number in the T-register is copied into the Z-register
also
remains in the T-register.
The diagram on the next page illustrates the stack operation when 8 ÷ 2 is
calculated. (Assume that the stack and LAST X registers have already been loaded
with the numbers shown as the result of previous calculations.)
Percentage Functions
Percentage Functions
Percentage Functions
Percentage Functions
When any of the three percentage functions is performed, the answer is placed in
the X-register, the number formerly in the X-register is copied into the LAST X
register, but the stack does not drop. The numbers in the Y-, Z-, and T-registers are
not changed when a percentage function is performed.
but
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