Sprite Ram Bug - Nintendo DMG-01 - Game Boy Console Manual

TM
Game Boy CPU Manual
Bit4

2.8.3. Sprite RAM Bug

There is a flaw in the GameBoy hardware that causes
trash to be written to OAM RAM if the following
commands are used while their 16-bit content is in the
range of $FE00 to $FEFF:
inc xx
dec xx
ldi a,(hl)
ldd a,(hl)
ldi (hl),a
ldd (hl),a
Only sprites 1 & 2 ($FE00 & $FE04) are not affected
by these instructions.
by DP
Palette number
Sprite colors are taken from OBJ1PAL if
this bit is set to 1 and from OBJ0PAL
otherwise.
(xx = bc,de, or hl)
2.8.2. Sprites
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