HP 15C Instrukcja Użytkownika Pobierz pdf (Strona 213)

213

Appendix C

Memory Allocation

The Memory Space

Storage registers, program lines, and advanced function execution

all draw

on a common memory space in the HP-15C. The availability of memory for

a specific purpose depends on the current allocation of memory, as well as

on the total memory capacity of the calculator.

Registers

Memory space in the HP-15C is allocated on the basis of registers. This

space is partitioned into two pools, which strictly define how a register may

be used. There is always a combined total of 67 registers in these two pools.

 The data storage pool contains registers which may be used only

for data storage. At power-up (Continuous Memory reset) this

equals 21 registers. This pool contains at least three registers at all

times: R

, R

, and R

 The common pool contains uncommitted registers available for

allocation to programming, matrices, the imaginary stack, and

_ and f operation. At power-up there are 46 uncommitted

registers in the common pool.

The use of _, f, Complex mode, or matrices temporarily requires extra memory space, as

explained later in this appendix.

1 2 ... 208 209 210 211 212 213 214 215 216 217 218 ... 287 288

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