HP 35S

[Gene]

Indirect registers on the 35S are allocated based on the highest numbered register that has a non-zero value.

If you want to set aside 100 indirect registers (which start at 00), then store a non-zero number in location 100 and you can use 00 - 99.

If you did this and 00 - 99 were all zero, then storing a 0 into indirect memory location 100 would de-allocate all the indirect registers.

Look at these two learning modules for the 35s for more examples, particularly the indirect data packing module.

Ignore the checksums.
Gene



  HP 35s - 08 Using index registers.pdf (Size: 149.33 KB / Downloads: 45)

  HP 35s - 35 Indirect registers data packing.pdf (Size: 162.28 KB / Downloads: 36)