Programming the HP-20b



#2

I've got an application I wrote for a PIC processor that I plan to port to the 20b. I seem to recall reading here somewhere about needing to write code in thumb mode. Is that correct? And does that only apply when trying to keep the original ROM intact? If I re-write the ROM completely am I free to use either mode?


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP's thinking behind the 20b/30b? John Ioannidis 3 435 09-07-2013, 10:21 AM
Last Post: Tim Wessman
  20b, 30b not in HP's web store Eric Smith 3 414 02-08-2013, 11:52 AM
Last Post: Walter B
  A non 20b/30b 34S Matt Agajanian 22 1,411 08-20-2012, 01:06 AM
Last Post: Reth
  [WP-34s] IR conversion of 20b Alexander Oestert 3 393 05-18-2012, 05:38 PM
Last Post: Harald
  Why hp-20b more expensive than 30b? Masaki Adachi 9 720 10-14-2011, 12:08 PM
Last Post: megarat
  missing segments on 20b running 34s db (martinez, ca.) 4 438 10-05-2011, 01:27 AM
Last Post: Walter B
  Flashing HP 20b for WP 34S Steve Brenton 10 740 09-30-2011, 09:03 AM
Last Post: Marcus von Cube, Germany
  Case for 20b/30b/34S? David Hayden 1 227 09-29-2011, 03:41 PM
Last Post: Walter B
  First post & a question re:20b/30b E.Lub_EU 10 676 09-20-2011, 02:36 PM
Last Post: E.Lub_EU
  HHC 2011 is 5 weeks away --- bring your 20b/30b to be flashed and the programming contest... Gene Wright 27 1,424 08-21-2011, 05:08 PM
Last Post: gene wright

Forum Jump: