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4K HP 67 Games rom attached for testing
11-24-2016, 03:07 PM
Post: #171
RE: 4K HP 67 Games rom attached for testing
(11-24-2016 07:05 AM)Dieter Wrote:  What does RF do?

By coincidence, I had the PPC ROM manual loaded (PDF), so it's easy to answer this, straight from the manual:

"RF sets all flags to their default status, i.e.,
the state they would be in after MEMORY LOST. The
one exception is that RF sets the FIX 2 display mode
rather than FIX 4, in accordance with longstanding
HP calculator tradition. RF is a short, stand-alone
program which can be executed anytime as a cleanup
measure via the keyboard, or it can be executed during
a running program if it is desirable to have a "virgin"
d-register. RF can also be used at the end of any
user program to clean up if the program has left
several unwanted flags set."

--Bob Prosperi
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HP-67 AOS program to debug - Gene - 10-30-2016, 02:11 AM
RE: 4K HP 67 Games rom attached for testing - rprosperi - 11-24-2016 03:07 PM

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