new Rollup()

Opens the rollup device and initializes the outputs merkle tree.

On riscv64 (inside the Cartesi Machine) the constructor opens the real machine IO device; elsewhere it starts libcmt's mock driver, configured by the CMT_INPUTS / CMT_DEBUG environment variables (see Testing on the Host).

Usage

import {  } from "@cartesi/rollup";
 
const  = new ();

Behavior

The device is exclusive: while an instance is open, constructing another throws with error.errno === -16 (EBUSY). Call close first.
On the mock, CMT_INPUTS is read once, at construction time — set it before creating the instance.

Errors

Condition	Error
Device already open	`RollupError` with `errno: -16` (`EBUSY`)
Device unavailable / driver failure	`RollupError` with the negative errno in `errno` and the libcmt call in `syscall`