Keycodes And Line Numbers - HP -11C Owner's Handbook Manual

76 Section 5: Programming Basics
As instructions are keyed into program memory, they are stored
sequentially in the available space. If all 63 lines of the initial
program space are already occupied and you key in a 64th program
instruction, data storage register R gis automatically reallocated to
seven more lines of program memory to make room for the new
instruction (plus up to six more), The HP-11C's memory
configuration would then be 70 lines of program memory and 20
data storage registers. Keying in a 71* program instruction
automatically reallocates storage register R.g to seven additional
lines of program memory. This pattern can be repeated until all 20
convertible data storage register (R.g through Ro, Ry through Ro)
have been reallocated to program memory.
Tf all convertible data storage registers are reallocated to program
memory, the memory configuration will be 203 program lines and
one data storage register (the Index—R ,—register). The following
table shows the allocation of the lines of program memory to their
respective storage registers.
064—070 134—140
071—077 141-147
078—084 148—154
085—091 155—161
092—098 162—168
0399—105 169—175
106—112 176—182
113—119 183—189
120—126 190—196
127—133 197—203
Storage Register /Program Memory Alfocation
Deleting lines of program memory one by one from any location in
program memory causes the calculator to automatically reallocate
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Section 5: Programming Basics 77
program memory to data storage registers in the reverse of the
order described above.
Data Storage to Program Memory Conversion Order
ee
RoRgR7..R1RoRgRg... Ry Ro
tS
Program Memory to Data Storage Conversion Order
For additional text and illustrations describing Automatic Memory
Reallocation, refer to appendix C, How Automatic Memory
Reallocation Operates.
MEM
To display the current allocation of memory at any time in or out of
program mode, press [9], then press and hold [MEM]. While you
hold (MEM), the calculator will display (1), the number of available
program lines to fill before conversion of the next storage register
and (2), the name of the next storage register to be converted. (For a
more graphic coverage of [MEM] operation, refer to appendix C,
How Automatic Memory Reallocation Operates.
Available od { Next Register
Program Lin to Convert
p-63 rg
MEM) Display With Program Memory Cleared
Keycodes and Line Numbers
When you place the calculator in Program mode and key in a
program instruction, the keycode for the keys you pressed and the
line number of the complete instruction will appear in the display.
The keycode for any program instruction will have one, two, or
_