Function csr_cycle_increment

crates/virtual-machine/tests/vm_csr.rs:136–144

()

#[test]
fn csr_frm_read_write() {
    let mut csrs = CsrFile::new();

    csrs.write(addr::FRM, 0x7)
        .expect("CSR access should succeed"); // RMM
    assert_eq!(
        csrs.read(addr::FRM).expect("CSR access should succeed"),
        0x7
    );

    // Only lower 3 bits are valid
    csrs.write(addr::FRM, 0xFF)
        .expect("CSR access should succeed");