Hollywood Poker: Routine at 90BB

90BB: Handler: Mark Cards

Used by the routine at MarkCards.
Sets the cards in the players hand to be redrawn, where they've been marked in MarkedCards.
HandlerMarkCards	90BB	LD DE,$9055	DE=MarkedCards.
	90BE	LD HL,$96C7	HL=PlayersHand.
Cycle through each marked card from MarkedCards, and set the appropriate card in the players hand to be redrawn (FF) if it's set to do so.
	90C1	LD B,$05	Set a counter in B for the 05 cards in a hand.
HandlerMarkCards_Loop	90C3	LD A,(DE)	A=*DE.
	90C4	OR A	Jump to DontMarkCard if A is zero.
	90C5	JR Z,DontMarkCard	Jump to DontMarkCard if A is zero.
Set the card in the hand to be redrawn.
	90C7	LD (HL),$FF	Write FF to *HL.
Move onto the next card.
DontMarkCard	90C9	INC HL	Increment both DE and HL by one.
	90CA	INC DE	Increment both DE and HL by one.
	90CB	DJNZ HandlerMarkCards_Loop	Decrease the card counter by one and loop back to HandlerMarkCards_Loop until all cards have been considered.
Clean up the UI for marking cards.
	90CD	LD HL,$5A21	HL=5A21 (attribute buffer location).
	90D0	LD B,$1E	B=1E.
ResetMarkCardsAttributes_Loop	90D2	LD (HL),$00	Write INK: BLACK, PAPER: BLACK to *HL.
	90D4	INC HL	Increment HL by one.
	90D5	DJNZ ResetMarkCardsAttributes_Loop	Decrease counter by one and loop back to ResetMarkCardsAttributes_Loop until counter is zero.
	90D7	RET	Return.