Determining the Current Partitions

You can determine the current partitions using one of two keyboard commands or a program instruction.

Keyboard Commands

To display the current partition directly from the keyboard, use either of these two keyboard commands.
  • Press [ INV ] [ 2nd ] [ PART ].
  • Press [ LIST ] { ST } to display the current status of the calculator.
The partitions are displayed as shown here.

D_W6jP3i
In this case, the 7200 bytes of user memory are partitioned as:
  • 400 program steps ( 400 bytes )
  • 100 data registers ( 800 bytes )
  • 6000 bytes of file space

Program Instruction

One characteristic of [ INV ] [ 2nd ] [ PART ] makes it particularly useful as a program instruction.

It places the number of data registers in the numeric display register and places a number in the t-register that has the form:

    pppp.ffff

where pppp is the number of program steps and ffff × 1000 is the number of bytes of file space partitioned.

After executing INV PAR, your program can examine those registers to determine the partitions.

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