Function read_only_cache_rejects_writes

crates/virtual-machine/tests/vm_cache.rs:171–175

()

            associativity: 2,
            write_back: false,
            read_only: false,
        },
        ram,
    );
    c.write_byte(RAM_BASE, 0xCD)
        .expect("cache access should succeed");
    // Bypass the cache by reading directly from the underlying RAM via peek_next
    let direct = c.peek_next().peek_byte(RAM_BASE).unwrap_or(0);