HP 12C Identification

[dylanmitchell]

How can I identify the processor and firmware used in my 12C's? Looks like HP has used Agilent/Marvell, Atmel, ARM cortex, and others and various firmware versions over the years..

Platinum 25th Anniversary single battery
CNA70707107 (China 07 of 2007)

Platinum dual battery
PHA1050249 (Phillipines 2021? just bought it)

Platinum dual battery
unknown serial

Still looking for an F2230A aka HP-12C+ two battery, ARM processor 12C. I did order a SwissMicros DM12L with the ARM microcontroller emulating the NUT processor and an LPC1115 32-bit ARM Cortex-M0 microcontroller.

[brouhaha]

(07-11-2021 07:36 PM)dylanmitchell Wrote:  How can I identify the processor and firmware used in my 12C's? Looks like HP has used Agilent/Marvell, Atmel, ARM cortex, and others and various firmware versions over the years..

Platinum 25th Anniversary single battery
CNA70707107 (China 07 of 2007)

Platinum dual battery
PHA1050249 (Phillipines 2021? just bought it)

Platinum dual battery
unknown serial

AFAIK, all production versions of 12C Platinum (and Prestige) use the SunPlus (now GeneralPlus) microcontrollers.

There are two versions, most easily distinguished by whether there are parenthesis as the blue shift of the STO and RCL keys.

[rprosperi]

(07-14-2021 02:34 AM)brouhaha Wrote:  AFAIK, all production versions of 12C Platinum (and Prestige) use the SunPlus (now GeneralPlus) microcontrollers.

There are two versions, most easily distinguished by whether there are parenthesis as the blue shift of the STO and RCL keys.

Also, note that the earlier Platinum machines without parenthesis also don't have the UNDO feature added in the later units, and as a result are faster; in fact the fastest of the 12C flavors until the 12C+ came along which is dramatically faster than any others in the 12C family.

[Gene]

The 12c platinum units without parentheses are getting rarer all the time, as they were not made for very long.

In algebraic mode, they are a royal pain to use * , but they are rare.

Gene

* Yes, normal algebraic mode is a pain period :-) but it's even more of a pain on this 12c platinum.