WP34s 20b Repurposed - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: Not HP Calculators (/forum-7.html) +--- Forum: Not quite HP Calculators - but related (/forum-8.html) +--- Thread: WP34s 20b Repurposed (/thread-3065.html) |
RE: WP34s 20b Repurposed - Marcus von Cube - 02-22-2015 06:28 PM (02-22-2015 03:29 PM)John Galt Wrote:(02-22-2015 02:05 PM)Csaba Tizedes Wrote: If possible to make a 34s from a 20B or 30B, therefore is it possible to make a 30b from a 20b? (30b ROM upload to the 20b)?? Well protected IP I must say. You can load the image in an HP 20b but it will stay an HP 20b. The 30b functions are not available. I assume there is some hidden trick to identify the actual hardware and disable certain features depending on it. RE: WP34s 20b Repurposed - walter b - 02-22-2015 07:08 PM IIRC, Tim Wessmann told us some months ago how the 20b and 30b differ. There is a little difference in the HW under the blob AFAIK. d:-) RE: WP34s 20b Repurposed - matthiaspaul - 02-23-2015 11:04 PM (02-22-2015 07:08 PM)walter b Wrote: IIRC, Tim Wessmann told us some months ago how the 20b and 30b differ. There is a little difference in the HW under the blob AFAIK.Yep, see here: http://www.hpmuseum.org/forum/thread-2438-post-21873.html#pid21873 It should be possible to identify the difference specifically probing for it in a debug firmware. Afterwards, it may or may not be possible to devise a hardware modification to eliminate this difference. Greetings, Matthias |