This enables you to use your calculator just like normal until you press [ON]-[A]-[F]. Once you press these keys, the memory will be falsely cleared and your directory will appear empty, but the routine is still in memory and will catch the next [ON]-[A]-[F] and will continue to do so until you do an [ON]-[C].
List of all the memory addresses and short descriptions of each in the 48SX as it was known back in 1991. Has versions of the list sorted by address and by object type and function.
Shows the ROM entry points that were static from the 48GX through the 49G, including a list of officially-unsupported entry points which did not change.
An assembler that accepts hexadecimal code and compiles it into machine language. Designed for the S series as one of the first assemblers, similar to Hexify on the 28S.
Shows how to make temporary directories with a new TDIR command, analogous to temporary menus with the existing TMENU command, useful for libraries which need to store temporary variables.
Contains the full source code and documentation for ThermoPro, a very comprehensive thermodynamics library. Also includes several different binaries other than the one made available in 1994. Hopefully someone will use this source code to port it to the 49G/49G+.
Modified revisions of HP's XSEND and XRECV to fix the bug in earlier ROMs that required double memory and to transfer directly to and from the stack rather than user RAM.
This is a third version of the seven level alternate stack display routine.
5/7-line stack replacement.
Huge (70k) thermodynamics library.
Contains the full source code and documentation for ThermoPro, a very comprehensive thermodynamics library. Also includes several different binaries other than the one made available in 1994. Hopefully someone will use this source code to port it to the 49G/49G+.