A few notes on jebedeo's firmware for the Swiss Micros DM15

The HP Forum Thread is:

https://www.hpmuseum.org/forum/thread-20046.html

The usual HP15C functions can be used as normal, except there's no
Matrix functionality.


Complex Numbers
===============

The stack is always in complex mode, showing real and imaginary 
parts together and all calculations are done in complex mode.

To enter a complex number (eg 3+i4)

3
ENTER
4
fI

fI combines Y (real) and X (imaginary) into a complex number in X

with a complex number in X you can split it back to its parts with
fI

Pressing f(i) will make the complex conjugate

Pressing fRe<>Im swaps real & imaginary parts


Change to Polar Mode g>P

in Polar you enter complex numbers as

2 (mag)
ENTER
60 (angle)
fI

and get 

2 < 60 

All calculations are done in polar until you convert back to Rect

f>R


Programming
===========

In Prog mode:

Long-press GTO to be able to jump to an existing Label: 
"Go To LBL:"
(The jump to label is also possible in "run mode" with a 
short press of GTO)

Long-press GSB to be able to jump to an existing Line Number: 
"Go To Line:"
(The jump to line-number is also possible in "run mode" with
a short press of GSB)

Tests such as "x=y?" etc. can be entered either as normal by reference
to the reference info on the rear panel, or (after pressing gTEST)
by using the < (1/x) or > (CHS) soft-keys to cycle through the
choices.

To run a label A-E use fA....fE  as normal

To run a label other than A-E (ie a "number-label") use fLBL..[number]
(this is different to the HP15C, as GSB has been re-purposed to 
jump to a line number)

Serial Memory Dump
==================

Connect to terminal emulator at 57600baud (8N1)

aside.....

It's possible to use Putty etc. but also screen:

	screen /dev/ttyUSB0 57600

if it's already running (but detached) use
	
	screen -r

to reattach

to kill the screen session (from within it)

	C-a k

Once in a serial session....

Long-press STO will dump memory content to the terminal. Copy/Paste 
the string into a file for later.

Long-press RCL will start listening for a string of memory contents.
Have your chosen memory dump in clipboard and paste to the terminal.


Prog Run Time
=============

adding a line to the end of a prog. using fPREFIX will add "runTime"
to the prog. and the elapsed time will be put into X stack on 
completion. Useful for benchmarking.