Re: [myhdl-list] Example of MyHDL for Python Developers Documentation

[Jan C. <jan...@mu...>]

On 19/05/12 02:13, Christopher Lozinski wrote:
    . . .
> Let us lighten up a little bit.  And embrace all the wonderful ideas
> that this group of people have.  Let us face it, we are not mainstream
> digital circuit designers.  There are some very interesting ideas
> floating around.  I love Dillon's examples of  Hierarchical signals,
> complex numbers.  I love the idea of building a python processor.

Excellent.  I have a delightful little processor, not python, but 
shares some features.  It should be able to support interactive 
code development while running in the MyHDL simulator, but,

I got stuck trying to choose the best way to simulate a comm port 
which would link the development tools to the hardware.  perhaps 
you could fix this?

You could also use this design to develop your ideas about higher 
level hardware description.  There is already one example of module 
reuse in the design.

This project is unusual, it is tiny, you will be able to understand 
the hardware and target code generation from top to bottom, and if 
successful you will have a silicon embeddable processor capable of 
interactive code generation and LED blinking.

The code set is summarised below, Jan Coombs.
-- 

b16_ComponentList_asat2012-05-19

Hardware Source in MyHDL
------------------------
test_b16.py        3.0
   b16_ram.py      11.0   (simple tests)
   b16_cpu.py      16.6
     b16_opcodes    5.2
     b16_alu.py     2.2
     b16_stack2.py  1.7
                   ----
                   39.7 kB

Cross Development Tools in gForth
---------------------------------
b16_jc.fs     10.6  assembler &c
   strings.fs   6.7  string support
   serial.fs    6.4  PC comm port support
   syscalls.fs  1.4  PC hw driver access
               ----
               25.1 kB

Code For Target in b16 'Assembler'
----------------------------------
boot.asm    6.2  signon & blink LED
b16.asm     2.4  instruction set test
sieve.asm   0.5  another test
usb.asm     0.3  incomplete
             ---
             9.4 kB

Original source:
http://bernd-paysan.de/b16.html