mirror of
https://git.sr.ht/~crc_/retroforth
synced 2024-11-16 19:48:56 +01:00
48 lines
771 B
Text
48 lines
771 B
Text
|
# EDA.forth
|
||
|
|
|
||
|
|
## Description
|
||
|
|
|
||
|
|
Forth EDA, ported to RETRO
|
||
|
|
http://www.0xff.in/bin/A_Language_for_Digital_Design.pdf
|
||
|
|
|
||
|
|
## Code & Commentary
|
||
|
|
|
||
|
|
~~~
|
||
|
|
#32768 'STATUS const
|
||
|
|
#32767 'TIME const
|
||
|
|
~~~
|
||
|
|
|
||
|
|
### Digital logic simulator
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:S. dup STATUS and n:-zero? [ '+ s:put ] if TIME and n:put ;
|
||
|
|
:_ (n-n) STATUS xor ;
|
||
|
|
:eda:and (nn-n) over TIME and over TIME and n:max rot STATUS and rot STATUS and and + ;
|
||
|
|
:eda:or (nn-n) _ swap _ eda:and _ ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
### Technology
|
||
|
|
|
||
|
|
~~~
|
||
|
|
:2and (nn-n) eda:and _ #9 + ;
|
||
|
|
:3or (nnn-n) eda:or eda:or #30 + ;
|
||
|
|
:2xor (nn-n) over _ over eda:and [ _ eda:and ] dip eda:or #35 + ;
|
||
|
|
~~~
|
||
|
|
|
||
|
|
### Logic equations
|
||
|
|
|
||
|
|
~~~
|
||
|
|
#0 'A const
|
||
|
|
#10 'B const
|
||
|
|
#10 _ 'C const
|
||
|
|
:enb_ (-n) A B 2xor ; (45)
|
||
|
|
:xy (-n) enb_ C 2and A B 3or ; (+84)
|
||
|
|
~~~
|
||
|
|
|
||
|
|
## Test
|
||
|
|
|
||
|
|
```
|
||
|
|
enb_ S. nl
|
||
|
|
xy S. nl
|
||
|
|
```
|