Generating Character Set (and hence values to indirectly access MF, M1F and first 5 L-registers)

If you've got the cassette adaptor the *.wav file contains the memories M0, M1 & M15 to M19 that are generated here.

Generation of various characters on the FX-502P (but not the FX-602P)
Interactive Input Read out Remark
MODE, 1, 0. Go to run mode.
3, 2, Min0, AC, INV IND, MR0, - .  481 Put 32 into a memory and then try to recall M32 - a memory that the calculator doesn't have.
=, , =, Min2 0.o06876873 Generate the basic component that can be cumulated to generate the other characters
0.1 = o.068768735

Dividing by 0.1 isn't the same as multiplying by 10 because multiplication collapses the non-numeric characters.

(Multiplying by 10 here would have resulted in 10.06876873)

INV-RND-1 Min 0 o. Indirectly recalling M0 will now recall MF
MR0 + MR0 = Min1 1o. Indirectly recalling M1 will now recall M.F
MR2 + + = = = = = = = = = = = = = = 14.P031531. Generation of a number containing P.
INV-FRAC 0.1 = INV-RND-1 Min19 P. Store P (value = 11). This causes indirectly recalling M19 to recall the least significant 10 digits of the first L-register that have been shifted to the left by 2 digits (i.e. multiplied by 100). I never found where the 2 most significant digits went!
MR2 0.1 = Min5 + + = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Min3 2.9C063062 Generated a number with a C
( AC INV-IND MR19 C.06306205 Indirectly recalling M19 recalls the least significant 10 digits of the first L-register that have been shifted to the left by 2 digits (i.e. multiplied by 100).
+/- INV-INT Min18 -C. Negate to prevent the locking of the calculator.
MR5 + + MR3 = = = = = = = = = = = = = = Min3 4.3E0258242 Generated a number with an E
+/- ( AC INV-IND MR19 INV-INT Min17 -E. Extract -E from the first L-register.
MR5 + + MR3 = = = = = = = = = = = = = = = Min3 5.8-0573552 Generated a number with a character '-'.
( AC INV-IND MR19 INV-INT Min16 -. Extract the '-' character from the 1st L-register.
MR5 + + MR3 = = = = = = = = = = = = = = Min3 7.2 0201174 Generated a number with a space character (the 3rd character).
( AC INV-IND MR19 INV-INT Min15

.

Extract the space from the L-register and integerise to isolate it from the fractional part.