HP97 The journey begins

[teenix]

HI all,

I've added some more functionality to the 19C.

The program codes can be displayed in text format if desired.

You can also store and recall data files similar to the HP-67/97 which in the 19C's case, are the first 16 primary registers.

There is a simple text editor for entering program or data file names prior to saving a file, or a default name can be used. 20 characters max for each name.

These files can be transferred to/from the PC and listed on the CalCom screen, transferred to/from disk, and they can also be transferred to the emulator memory if the 19C is selected.

You can scroll through the files and the name of the file will appear on the LED display, and if it is a data file, the decimal point will flash on the first digit.

There is a special memory area set aside for storage for up to 10 constants. These can be edited from the calculator menu or edited from the CalCom program and transferred.

You can recall/save these in RUN mode from a special key combination. This combination has also been added to the HP program codes so that you can add this to a program and use it to store or recall constants during a running program. It can also use the I register for indexed constant access.

The X register can be loaded with a random number from another new key combination, which also has a program code so it can be used in programs too.

The printer also recognizes the new program codes when printing a program.

A beeper will sound for various reasons, mainly errors, and it can be set for loud or soft. The LED display can be set for bright or dim.

The Continuous Memory is working and does not need a battery for backup, so you can remove the battery indefinitely without losing anything. You can do a "remove battery" reset from the menu to clear everything if need be and then 'Error' will be displayed as normally happens.


I still need to finalize the printer so that is coming.

cheers

Tony