logic.comp

来自「CNC 的开放码,EMC2 V2.2.8版」· COMP 代码 · 共 31 行

component logic;
pin in bit in-##[16 : personality & 0xff];
pin out bit and if personality & 0x100;
pin out bit or if personality & 0x200;
pin out bit xor if personality & 0x400;
function _ nofp;
description """
Experimental general `logic function' component.  Can perform `and', `or'
and `xor' of up to 16 inputs.  Determine the proper value for `personality'
by adding:
.IP \\(bu 4
The number of input pins, usually from 2 to 16
.IP \\(bu
256 (0x100)  if the `and' output is desired
.IP \\(bu
512 (0x200)  if the `or' output is desired
.IP \\(bu
1024 (0x400)  if the `xor' (exclusive or) output is desired""";
license "GPL";
;;
FUNCTION(_) {
    int i, a=1, o=0, x=0;
    for(i=0; i < (personality & 0xff); i++) {
        if(in(i)) { o = 1; x = !x; }
        else { a = 0; }
    }
    if(personality & 0x100) and = a;
    if(personality & 0x200) or = o;
    if(personality & 0x400) xor = x;
}