Struct FdsTraceRec 

pub struct FdsTraceRec {
    pub kind: u8,
    pub value: u8,
    pub head: u32,
    pub side: i8,
    pub status: u8,
}

One record in the optional FDS read-stream trace.

A diagnostic for the disk-read / side-swap path — e.g. the Kid Icarus side-B ERR.07 stall. Recorded only after Fds::enable_trace; default builds never allocate or record, so the determinism contract is untouched. kind: 0 = $4031 read (the disk byte the BIOS consumed), 1 = $4025 control write, 2 = side change. value is the byte (or the new side index / 0xFF for eject). head is the wire head; side is the inserted side (or -1 ejected); status is the live $4030 bits.

Fields

kind: u8

Event kind: 0 = $4031 read, 1 = $4025 control write, 2 = side change.

value: u8

The byte read/written, or (for a side change) the new side index / 0xFF.

head: u32

Wire head position at the time of the event.

side: i8

Inserted side index, or -1 when ejected.

status: u8

Live $4030 status bits at the time of the event.

Trait Implementations

impl Clone for FdsTraceRec

fn clone(&self) -> FdsTraceRec

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FdsTraceRec

impl Debug for FdsTraceRec

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.