84PCE:RAM:D0053F

Synopsis

Unofficial Name: tempSP

Memory Address: D0053Fh

Length: 3 bytes

When the OS is checking the stack depth, it uses this region of memory to load hl with sp. For instance:

ld (tempSP),sp
ld hl,(tempSP)

It can generally be used as a temporary data location, although it may be written to at some points.

Why this is silly

However, it is simply beyond me why they didn't simply do this, to save a ton of bytes and speed.

or a,a
sbc hl,hl
add hl,sp