;;; -*- Mode: asm; indent-tabs-mode: t; tab-width: 8 -*-

;;In use of in memcpy and memset
        A_start = $FA      ; 16-bit value (uses FB)
        B_start = $FC      ; 16-bit value (uses FD)
        B_end = $FE        ; 16-bit value (uses FF)
;;In use of by pixel_draw
        Y_pos = $FB
        X_pos = $FCFD
        byte_to_paint = $FE
        btp_mem_pos = $F9  ; 16-bit value (uses FA), byte to paint memory position
        C = $F7            ; 16-bit value (uses F8)
        B = $F5            ; 16-bit value (uses F6)