reqack/lib/node-fork-ctrl.js

elastic logic circuit tools

'use strict';

// fork controller generator for nodes

const nodeForkCtrl = p => {
    // console.log(p);
    const t = p.t[0];
    return [`// node:${p.id} fork controller`]
        .concat(
            'reg    ' + p.i.map(e => `req${e}_reg`).join(', ')
        )
        .concat(p.i.map(e =>
            `assign req${e} = req${t} & ~req${e}_reg`
        ))
        .concat(
            'wire   ' + p.i.map(e => `ack${e}_g`).join(', ')
        )
        .concat(p.i.map(e =>
            `assign ack${e}_g = ack${e} | ~req${e}`
        ))
        .concat(`assign ack${t} = ` + p.i.map(e =>
            `ack${e}_g`
        ).join(' & '))
        .concat(p.i.map(e =>
            `always @(posedge clk or negedge reset_n) if (~reset_n) req${e}_reg <= 1'b0; else req${e}_reg <= ack${e}_g & ~ack${t}`
        ))
        .concat('')
        .join(';\n');
};
module.exports = nodeForkCtrl;