HP 28S Fast Mode


Hi, I've been trying to speed up my HP 28S (version 2BB) using the fast mode program presented at http://www.rskey.org/gene/hpgene/28sfast.htm However, it doesn't work, but keeps giving me an error message at the first STO operation.

Does anyone know how to put the 28S into fast mode?

Thanks, Vic


Yes, the program on this site doesn't work. I had a look into my collected solutions and I found three different realisations. I think the following one is the shortest. I have no idea who's the author and if this program really work, just try it:

First up, it appears that there was never a posting for the SPEED or
FAST program which does not have to be in the home directory, or that
requires a POKE program to work. Either of which seems ridiculous to
me because the code to poke the speed nibble is so short.

This program will conveniently create FAST which can be stored at any
location in the user memory. FAST works by changing the speed nibble
at #FFF00h from #7h to #Fh.


<< #1FFF00F1F0302331h
#7195h SYSEVAL
#44A4h SYSEVAL >>




Thanks, that works perfectly!
Cheers, Vic

Possibly Related Threads...
Thread Author Replies Views Last Post
  Integration question and "RPN" mode comment Craig Thomas 16 2,094 12-05-2013, 02:32 AM
Last Post: Nick_S
  A fast Bernoulli Number method for the HP Prime Namir 16 1,740 11-22-2013, 04:46 PM
Last Post: Namir
  HP Prime: Recommendation for future RPN Program Mode BruceTTT 3 617 11-13-2013, 10:03 PM
Last Post: BruceTTT
  Program to change entry mode on Prime Michael de Estrada 3 617 10-28-2013, 10:13 AM
Last Post: Han
  Prime: Exam mode (possible duplicate after funny response first time) Paul Townsend (UK) 1 462 10-24-2013, 03:09 PM
Last Post: Tim Wessman
  Does RPN entry mode cause the Prime keyboard to lock up ? Michael de Estrada 14 1,537 10-22-2013, 06:27 PM
Last Post: John Colvin
  HP Prime: Edit integer in RPN mode plivesey 15 1,525 10-18-2013, 04:34 PM
Last Post: kris223
  Temporary User Mode Key Programs not working in RPN BruceTTT 7 958 10-14-2013, 01:46 PM
Last Post: BruceTTT
  HP Prime: MAKELIST in RPN mode? toml_12953 2 511 10-13-2013, 07:40 PM
Last Post: BruceH
  Low battery slow mode Marcel Samek 4 603 09-18-2013, 02:02 PM
Last Post: Harald

Forum Jump: