Install

npm i bit-field

Usage

bin/bitfield.js [options] > alpha.svg

options

--input : input JSON filename - must be specified always
--vspace : vertical space - default 80
--hspace : horizontal space - default 640
--lanes : rectangle lanes - default 2
--bits : overall bitwidth - default 32

alpha.json

[
    { "name": "IPO",   "bits": 8, "attr": "RO" },
    {                  "bits": 7 },
    { "name": "BRK",   "bits": 5, "attr": "RW" },
    { "name": "CPK",   "bits": 1 },
    { "name": "Clear", "bits": 3 },
    { "bits": 8 }
]

alpha.svg