; Vera Tile Manipulation Assembly Language Routines for C02
; Requires External Routines 
; and External Variables TEMP1

;gettda() - Get Tile Data Address
;Args: A = Layer (0/1)
;
;Destroys: TEMP1,TEMP2
;Returns: A = Tile Base Bank
;         Y,X = Tile Base Address
GETTBA: JSR SET

;gettdo() - Get Tile Data Offset
;Args: A = Layer (0/1)
;      Y = Tile Offset
;Destroys: TEMP1,TEMP2
;Returns: A = Tile Base Bank
;         Y,X = Tile Base Address
GETTBA: STA TEMP0   ;Save Layer Number
        STY TEMP1   ;Set LSB to Offset
        JSR GETTSZ  ;Get Tile Size