Algebraic behavior in the Simulator

The following program allows simulate one algebraic calculator


Contents of NORMAL.PRG

cf 00
cf 01
cf 02
cf 03
cf 04
dsp 84  =   (Write two spaces between 84 and = )
useron                                                    
rtn
lbl +
fs? 04
xeq R
sf 00
sf 04
enter^
rtn
lbl -
fs? 04
xeq R
sf 01
sf 04
enter^
rtn
lbl *
fs? 04
xeq R
sf 02
sf 04
enter^
rtn
lbl /
fs? 04
xeq R
sf 03
sf 04
enter^
rtn
lbl R
cf 04
fs?c 00
+
fs?c 01
-
fs?c 02
*
fs?c 03
/
rtn

This program uses the special command DSP included in the simulator and the enhanced global labels feature that allows jump to, for example, lbl / when you press the calculator slash key in user mode.

Example: Calculate the following operation using normal form:

(3 + 6 -2) * 4 / 2

In RPN :

3 [ENTER] 6 + 2 - 4 * 2 /

In algebraic (normal) form:

[XEQ]NORMAL
3 [+] 6 [-] 2 [*] 4 [/] 2 [=]

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