Use a rs485 communication module

Hello,

I've worked/played with a flipdot display from alfazeta (7x7 dots) with an arduino. The display is driven by an rs485 protocole and specific ordered bits...
I would like to use an espruino to do it again.
On arduino we use a software serial
I've read that there is no software serial on espruino
Do i have to use the serial module on specific pin or it is not possible... Not sure to understand?

The display use a specific ordered bit sentence compose with 3 bits for command, x bits for data display (depend of size), and an end bit.

Is there an example somewhere to start coding?

Regards

éric