[comp.sys.hp] More about HP-28 TIME program

gordo@athena.mit.edu (Garet G Nenninger) (02/20/88)

To Tim (and others) that have been having trouble with my TIME program
for the HP-28C:

A little note: make sure your calculator is in STD numerical mode (on
the MODE menu), as opposed to FIX or SCI.  When TIME divides by 1E-6,
it expects the leading zeros to stay there to put the digits in the
right position for the colon-formatter part of the program.
Unfortunately, SCI mode converts .0210 to 2.1E-2, and it gets sent
that way to ->STR.  

Also, 'gettime' should return some obnoxious number like 3432733.88699.
The register that is accessed by #123E SYSEVAL is incremented every
1/8192 seconds.  'gettime' divides by 29491200 (= 8192 * 60 * 60) to
convert to hours.  'basetime' contains a conversion factor to convert
to the current time modulus 24.  I hope that gives some additional
information on this SYSEVAL call to all of you (y'all) who are making
egg timers out of your 28s.  Tell us about it.

P.S. I, too am waiting in anticipation for Jurjen Bos's SYSEVAL list.
Is this guy a saint or what?