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DM 42
05-30-2017, 12:24 PM (This post was last modified: 06-24-2017 06:28 PM by Guenter Schink.)
Post: #86
RE: DM 42
(05-30-2017 10:45 AM)matthiaspaul Wrote:  Thank you all. I've added the info to the WP article.

Speaking of clock frequency, somewhere I read the calculator runs at 27 MHz, however, from your description above it appears to be clocked dynamically depending on battery state. If the processor is actually a STM32L476RG, it would support up to 80 MHz in theory. So, does it run at 80 MHz with USB plugged in?

The processor comes with 128 KB RAM. How much of it is available to users?

Greetings,

Matthias

Some specs:
Dimension (mm). 144x77x6.5-13
Weight: 170gr
Processor speed 24MHz on battery, 80 MHz on USB power
RAM available on clean machine with only "REGS" allocated 78748 Bytes
Key features beyond HP42S achieved so far:
  • Flash memory available to store and retrieve programs (total flash is 9MByte, about 1.5 MByte used by math library. How much available for the user is unknown for now)
  • Save state to flash and retrieve
  • Show stack registers on screen
  • Alpha characters on faceplate
What to expect next: (my personal guess)
  • enable access to numbers in alpha mode also functions like AStO ARCL
  • enable infrared printing or printing to screen (or both?)
  • include recent update of Free42 (handling of pseudo complex numbers corrected)
Günter

Edit: Corrected 27MHz to 24MHz
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Messages In This Thread
DM 42 - Geoff Quickfall - 05-19-2017, 05:21 PM
RE: DM 42 - Dave Frederickson - 05-19-2017, 05:29 PM
RE: DM 42 - Dave Frederickson - 05-26-2017, 08:32 PM
RE: DM 42 - Massimo Gnerucci - 05-19-2017, 05:30 PM
RE: DM 42 - Ángel Martin - 05-19-2017, 05:53 PM
RE: DM 42 - Massimo Gnerucci - 05-19-2017, 06:08 PM
RE: DM 42 - Dan B - 05-19-2017, 08:58 PM
RE: DM 42 - Geoff Quickfall - 05-19-2017, 09:30 PM
RE: DM 42 - Luigi Vampa - 05-19-2017, 09:38 PM
RE: DM 42 - Namir - 05-20-2017, 01:07 AM
RE: DM 42 - 48GX - 05-24-2017, 11:37 AM
RE: DM 42 - Dave Britten - 05-24-2017, 01:27 PM
RE: DM 42 - matthiaspaul - 05-25-2017, 09:09 PM
RE: DM 42 - matthiaspaul - 05-26-2017, 12:18 AM
RE: DM 42 - matthiaspaul - 05-29-2017, 11:26 PM
RE: DM 42 - 48GX - 05-30-2017, 12:37 AM
RE: DM 42 - rprosperi - 05-30-2017, 02:21 AM
RE: DM 42 - grsbanks - 05-30-2017, 10:31 AM
RE: DM 42 - Logan - 05-24-2017, 11:38 AM
RE: DM 42 - HP-Collection - 05-24-2017, 12:15 PM
RE: DM 42 - Dave Frederickson - 05-24-2017, 03:58 PM
RE: DM 42 - Guenter Schink - 05-24-2017, 01:53 PM
RE: DM 42 - Ángel Martin - 05-26-2017, 01:36 PM
RE: DM 42 - Thomas Okken - 05-26-2017, 04:30 PM
RE: DM 42 - Guenter Schink - 05-26-2017, 04:53 PM
RE: DM 42 - Ángel Martin - 05-27-2017, 05:27 AM
RE: DM 42 - Logan - 05-24-2017, 04:32 PM
RE: DM 42 - Ángel Martin - 05-24-2017, 04:44 PM
RE: DM 42 - Vtile - 05-24-2017, 05:34 PM
RE: DM 42 - Guenter Schink - 05-24-2017, 06:42 PM
RE: DM 42 - Ángel Martin - 05-24-2017, 06:48 PM
RE: DM 42 - Vtile - 05-24-2017, 07:58 PM
RE: DM 42 - Thomas Okken - 05-24-2017, 11:25 PM
RE: DM 42 - Ángel Martin - 05-25-2017, 04:50 AM
RE: DM 42 - Thomas Okken - 05-25-2017, 11:31 AM
RE: DM 42 - Ángel Martin - 05-25-2017, 04:35 PM
RE: DM 42 - Thomas Okken - 05-25-2017, 06:16 PM
RE: DM 42 - matthiaspaul - 05-26-2017, 11:38 AM
RE: DM 42 - Hsilop - 05-24-2017, 08:25 PM
RE: DM 42 - Logan - 05-24-2017, 08:29 PM
RE: DM 42 - Vtile - 05-24-2017, 08:30 PM
RE: DM 42 - Hsilop - 05-24-2017, 09:05 PM
RE: DM 42 - Vtile - 05-24-2017, 09:08 PM
RE: DM 42 - Logan - 05-24-2017, 09:09 PM
RE: DM 42 - Vtile - 05-24-2017, 09:11 PM
RE: DM 42 - Paul Dale - 05-25-2017, 12:59 AM
RE: DM 42 - Thomas Okken - 05-25-2017, 02:13 AM
RE: DM 42 - Guenter Schink - 05-25-2017, 09:52 AM
RE: DM 42 - Paul Dale - 05-25-2017, 11:11 AM
RE: DM 42 - Ángel Martin - 05-25-2017, 04:31 PM
RE: DM 42 - toml_12953 - 05-25-2017, 05:15 PM
RE: DM 42 - Thomas Okken - 05-25-2017, 06:21 PM
RE: DM 42 - Paul Dale - 05-26-2017, 12:05 AM
RE: DM 42 - toml_12953 - 05-26-2017, 01:37 AM
RE: DM 42 - pier4r - 05-25-2017, 08:03 PM
RE: DM 42 - Thomas Okken - 05-25-2017, 10:57 PM
RE: DM 42 - Paul Dale - 05-26-2017, 03:51 AM
RE: DM 42 - Ángel Martin - 05-26-2017, 05:33 AM
RE: DM 42 - Thomas Okken - 05-26-2017, 07:24 AM
RE: DM 42 - toml_12953 - 05-26-2017, 07:41 AM
RE: DM 42 - toml_12953 - 05-26-2017, 07:33 AM
RE: DM 42 - Paul Dale - 05-26-2017, 07:34 AM
RE: DM 42 - toml_12953 - 05-26-2017, 12:52 PM
RE: DM 42 - Thomas Okken - 05-26-2017, 04:36 PM
RE: DM 42 - toml_12953 - 05-26-2017, 07:37 PM
RE: DM 42 - AlexFekken - 05-26-2017, 10:24 AM
RE: DM 42 - Ángel Martin - 05-26-2017, 12:19 PM
RE: DM 42 - jch - 05-26-2017, 01:17 PM
RE: DM 42 - Thomas Okken - 05-28-2017, 08:57 PM
RE: DM 42 - rprosperi - 05-28-2017, 09:09 PM
RE: DM 42 - Thomas Okken - 05-28-2017, 09:47 PM
RE: DM 42 - rprosperi - 05-28-2017, 10:04 PM
RE: DM 42 - Thomas Okken - 05-28-2017, 10:24 PM
RE: DM 42 - rprosperi - 05-29-2017, 12:10 AM
RE: DM 42 - Thomas Okken - 05-29-2017, 01:30 AM
RE: DM 42 - rprosperi - 05-29-2017, 02:12 AM
RE: DM 42 - Massimo Gnerucci - 05-26-2017, 06:16 PM
RE: DM 42 - pier4r - 05-26-2017, 06:24 PM
RE: DM 42 - Thomas Okken - 05-26-2017, 06:56 PM
RE: DM 42 - Geoff Quickfall - 05-26-2017, 08:59 PM
RE: DM 42 - Dave Frederickson - 05-26-2017, 09:22 PM
RE: DM 42 - Geoff Quickfall - 05-26-2017, 09:44 PM
RE: DM 42 - matthiaspaul - 05-30-2017, 10:45 AM
RE: DM 42 - Massimo Gnerucci - 05-30-2017, 11:37 AM
RE: DM 42 - Guenter Schink - 05-30-2017 12:24 PM
RE: DM 42 - Thomas Okken - 05-30-2017, 12:50 PM
RE: DM 42 - Ángel Martin - 05-30-2017, 04:44 PM
RE: DM 42 - Guenter Schink - 05-30-2017, 06:48 PM
RE: DM 42 - Ángel Martin - 05-30-2017, 07:47 PM
RE: DM 42 - David Hayden - 02-10-2018, 08:51 PM
RE: DM 42 - Logan - 02-10-2018, 09:47 PM
RE: DM 42 - Guenter Schink - 02-10-2018, 11:18 PM



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