HP LogicDart CPU?

[J-F Garnier]

(09-19-2020 08:43 PM)Jonathan Busby Wrote:  The above seems to indicate that the LogicDart did *not* use a Saturn CPU/SoC, but instead an Intel x86-based microcontroller.

I always thought that the LogicDart used a Saturn CPU/SoC and ran an RPL OS due to its menu system being similar to the HP48 and the LCD display also being very similar with the same resolution IIRC.

There is no doubt that the LogicDart is based on a Intel 80L188 running a RTOS from JMI.
The original well-documented French thread (hello 'zpalm' !) includes a link to an article in Portable Design, March 1998, where Eric Vogel (the R&D project manager for the LogicDart) is quoted and mentioned the processor, among other things. Worth to read.

Also you can find the presentation by Eric Vogel at the PAHHC meeting on June 1997 here, he mentioned the Intel processor too and also said that the RPL was not an option (2h25-2h30).
This (long) session includes a complete live teardown and reassembly of the LogicDart, by Eric. What a great session!

   

J-F