DPGEN_NOR4(3)

💖 DPGEN_NOR4 — the NOR4 Macro-Generator, bestie edition 💖

okay so this is a page from the Alliance - genlib User's Manual, and it's all about one very specific little guy: DPGEN_NOR4. it lives in section 3 of the manual (that's the library-functions section, iykyk). buckle up 🎀

✨ NAME ✨

DPGEN_NOR4 — the NOR4 Macro-Generator. that's it, that's the name, she's a macro generator and she does NOR4 💅

🌸 SYNOPSIS 🌸

#include  <genlib.h>

void GENLIB_MACRO (DPGEN_NOR4, char *modelname, long flags, long N, long
drive);

yes bestie you gotta #include <genlib.h> first, and then you call GENLIB_MACRO with the macro DPGEN_NOR4 — that's the whole vibe. the rest of the args we'll get to 🦋

👑 DESCRIPTION 👑

so what does she actually do? she generates a N bits four inputs NOR with an output power of drive, and she names it modelname. that's the whole job, no cap. ✨

the valid values for drive are: 1 or 4. that's it. those are the only two. don't get creative 💀

🔌 TERMINAL NAMES 🔌

here's the full cast of characters, in order:

1. i3 : input.
2. i2 : input.
3. i1 : input.
4. i0 : input.
5. nq : output.
6. vdd : power.
7. vss : ground.

four inputs, one output, power, ground. the whole friend group 🫶

🧠 BEHAVIOR 🧠

the logic, spelled out, fr fr:

nq <= not(i0 or i1 or i2 or i3)

that's giving "NOR gate but with four of them". iconic. 🌈

🎀 EXAMPLE 🎀

here's what it looks like in the wild, copy this energy:

GENLIB_MACRO(DPGEN_NOR4, "model_nor4_32"
                        , F_BEHAV|F_PLACE
                        , 32
                        , 1
                        );

GENLIB_LOINS( "model_nor4_32"
            , "instance1_nor4_32"
            , "i3[31:0]"
            , "i2[31:0]"
            , "i1[31:0]"
            , "i0[31:0]"
            , "nq[31:0]"
            , "vdd", "vss", NULL
            );

so she makes model_nor4_32 with N = 32, drive = 1, flags F_BEHAV|F_PLACE, and then GENLIB_LOINS wires her up with all the [31:0] buses and the vdd/vss and a NULL at the end to close it out. chef's kiss 😭💖

🦋 SEE ALSO 🦋

go read these next, bestie, they're the lore:

• GENLIB_MACRO(3)
• genlib(1)

sign-off time 💜 this lil masterpiece came out of ASIM/LIP6, dated 30 July 2004 — yeah she's vintage but she still slays. periodt. 👑✨