HP 15c Collector's Edition

214 Appendix C: Memory Allocation
Total allocatable memory: 96 registers, numbered R
2
through R
97
.
[(dd − 1) + uu + pp + (matrix elements) + (imaginary stack) + (_ and
f)] = 96. For memory allocation and indirect addressing, data registers
R
.0
through R
.9
are referred to as R
10
through R
19
.
MEMORY
Permanent
R
I
Index
Register
R
0
0
R
1
1
Allocatable
R
2
2
Statistics
Registers
R
9
9
DATA STORAGE POOL
R
2
to R
dd
allocated
here. Initial config-
uration: dd = 19.
R
.0
10
R
.1
11
Highest
numbered
data
register = dd
R
.8
18
R
.9
19
MOVABLE BOUNDARY
after R
dd
. Initially
dd = 19.
R
dd + 1
COMMON POOL
Matrix Elements
Imaginary Stack
_ and f
Program Lines
Number of
uncommitted
registers = uu.
Number of registers
occupied by program
lines = pp.
R
97
97