bp@pixar.uucp (Busy Person) (05/25/88)
I have a new 28-s. Incredible machine except for the lack of I/O. The fact that there's no way to get input into the thing except through the keyboard is a bit frustrating. When HP comes out with one that can receive infrared as well as send, I'll snap it up. Someone just mentioned a clock program (using SYSEVAL I assume) for the 28-c. Does anything similar exist for the 28-s? Is any information available on the internals of the 28-s? Wozniak's CORE controllers don't seem to be able to capture the infrared printer output of the 28-c and 28-s. Bruce Perens
Jake_G_Schwartz@cup.portal.com (05/27/88)
For good info on both the 28C and 28S, consult two recent books -
Both are available from EduCalc (27953 Cabot Road, Laguna Niguel, CALIF 92677)
(phone : 714-582-2637)
1. "customize Your HP28" by Wlodek Mier-Jedrzejowicz
2. "HP28 Insights" by William C. Wickes
Wickes' book is just out. Both have info on HP28 internals and SYSEVAL stuff.
In addition, the USA users group HPX (Handheld Program Exchange) publishes a
newsletter 6 times a year covering all aspects of HP handhelds. Membership is
25 dollars a year. Contact HPX at
HPX
P.O. Box 4160
Des Plaines, IL 60016
(312) 884-0099