|Re: Micro Voyagers|
Message #11 Posted by Mike Morrow on 26 Aug 2013, 2:43 p.m.,
in response to message #10 by Hans Brueggemann
...i feel somewhat tempted now to do a franken-hp by implanting the guts of one these into an HP-15C LE.
The very interesting thing to me is the fidelity of the emulation of HP-15C firmware on the DM-15CC. It has avoided the infamous problems of the HP-15C LE, and goes on to add significant enhancements that the HP-15C LE does not even attempt. All this from a small organization that's likely not even half the size of HP. :-)
...are there any photos of the innards of the micro voyagers available?
From Lyuka's interesting website comes this photo:
The photo above shows PCB version 12. My year-old DM-15CC has PCB version 10, which has obvious differences. The keyboard is on the opposite side of the PCB...this shows what you see when the case back is removed.
SwissMicros website has links to youtube videos of device development at the bottom of this INFO page.
My DM-15CC (now called just DM-15) still has old MEM80 version 7 firmware. Version 14 is the most current. As far as my unit goes, I find:
1. Running at 48 MHz, it completes a 2500-iteration of the Savage Benchmark in about 250 seconds. The HP-15C LE completes this in 48 seconds. The HP-15C completes this in about 6000 seconds.
2. Running long duration programs at 48 MHz results in rather short battery life from the CR 2032.
3. The / plus ON self-test starts but does not appear to respond to keyboard presses to test keys. After about 40 seconds, ERROR 9 is generated.
4. The + plus ON self-test starts but does not appear to respond to keyboard presses to terminate. Pressing ON will eventually stop this test by turning the machine OFF.
5. The x plus ON self-test starts works.
Edited: 26 Aug 2013, 6:15 p.m. after one or more responses were posted