DPGEN_XNOR2MASK(3)

💖 DPGEN_XNOR2MASK 💖

okay bestie, welcome to the Alliance - genlib User's Manual corner of the internet, where today we're unlocking the Programmable Mask Macro-Generator ✨ it's giving hardware, it's giving generator, it's giving iconic 🎀

✨ NAME ✨

DPGEN_XNOR2MASK — the Programmable Mask Macro-Generator, no cap 👑

🌸 SYNOPSIS 🌸

#include  <genlib.h>

void GENLIB_MACRO (DPGEN_XNOR2MASK, char *modelname, long flags, long N,
char *constVal);

like, that's the whole vibe right there 💅

🦋 DESCRIPTION 🦋

So basically it generates an N bits conditionnal XNOR mask and names it modelname. slay.

How it works, bestie, listen up :

• if the cmd signal is set to '0', the mask is NOT applied, so the whole operator behave like an inverter. it's literally just flipping bits, periodt 🙃
• if the cmd signal is set to '1', the mask IS applied, and the output is the complemented result of the input value XORed with the mask (supplied by constVal). ate that 💅

The constant constVal is given to the macro-generator call, therefore the value cannot be changed afterward : it's hard wired in the operator. it's committed. no takebacks, no edits, iykyk 🔒

⚠️ A common error is to give a real C constant for the constVal argument. Be aware that it is a character string. yes, a string, bestie, not a number. the number of people who trip on this... 😭

🎀 TERMINAL NAMES 🎀

1. cmd : mask control (1 bit). the main character of this whole operation 👑
2. i0 : input (N bits).
3. q : output (N bits).
4. vdd : power.
5. vss : ground.

🌈 BEHAVIOR 🌈

nq <= WITH cmd SELECT not(i0)                 WHEN '0',
                      not(i0 xor X"0000FFFF") WHEN '1';

look at her. the conditional. the range. the drama ✨

🍓 EXAMPLE 🍓

GENLIB_MACRO(DPGEN_XNOR2MASK, "model_xnor2mask_0000FFFF_32"
                            , F_BEHAV|F_PLACE
                            , 32
                            , "0x0000FFFF" /* A string! */
                            );

GENLIB_LOINS( "model_xnor2mask_0000FFFF_32"
            , "instance1_xnor2mask_32"
            , "cmd"
            , "i0[31:0]"
            ,  "q[31:0]"
            , "vdd", "vss", NULL
            );

see that /* A string! */ comment? yeah, that's the whole point, don't forget it 🙈

💜 SEE ALSO 💜

• GENLIB_MACRO(3)
• genlib(1)

and that's the tea, bestie 🫶 this lil page came to you from ASIM/LIP6, dated 30 July 2004 — oldie but a goodie, fr fr 💖✨🎀