Method write

write serialises one log line into the next available fixed-width slot. Slot layout (memSlotSize = 800 bytes): [0 : n] level prefix (2 bytes) + message body (up to 797 bytes) + '\n' [n : 800] zero-filled tail The two-character level prefix (e.g. "W ") is prepended when absent. The messa

(lvl LogLevel, msg Logmsg)