logbins: size of the binary area that follows the header.
logdsks: size of the disk area that follows the binary area.
logsizm: memory size, a multiple of 4096 (unreliable).
logspar: reserved bytes, decoded as text.
logsizd: bytes of the whole block on disk (header, binary, disk and text).
logtxto: offset of the text from the start of the block.
The fixed 64-byte log header (
LOGSTC).