Watches and watch sizes

A watch shows the live contents of an address in one of three sizes:

Size	Bytes	Displayed as
Byte	1	$XX
Word	2	$XXXX
Long	4	$XXXXXXXX

Word and Long are assembled little-endian, low byte first, matching the Z80's own convention — so a Word watch on a LD (nn),HL destination reads back HL.

Watches read through the CPU's current view of memory, so a watch on a banked address follows whatever is paged in at that moment.