2 ; Standard joystick driver for the Atari Lynx.
3 ; The Lynx has two fire buttons. So it is not quite "standard".
5 ; Modified by Karri Kaksonen, 2004-09-16
6 ; Ullrich von Bassewitz, 2002-12-20
7 ; Using code from Steve Schmidtke
10 .include "zeropage.inc"
12 .include "joy-kernel.inc"
13 .include "joy-error.inc"
19 ; ------------------------------------------------------------------------
20 ; Header. Includes jump table
26 .byte $6A, $6F, $79 ; "joy"
27 .byte JOY_API_VERSION ; Driver API version number
29 ; Button state masks (8 values)
47 ; ------------------------------------------------------------------------
50 JOY_COUNT = 1 ; Number of joysticks we support
53 ; ------------------------------------------------------------------------
59 ; ------------------------------------------------------------------------
60 ; INSTALL routine. Is called after the driver is loaded into memory. If
61 ; possible, check if the hardware is present and determine the amount of
63 ; Must return an JOY_ERR_xx code in a/x.
69 ; rts ; Run into UNINSTALL instead
71 ; ------------------------------------------------------------------------
72 ; UNINSTALL routine. Is called before the driver is removed from memory.
73 ; Can do cleanup or whatever. Must not return anything.
80 ; ------------------------------------------------------------------------
81 ; COUNT: Return the total number of available joysticks in a/x.
89 ; ------------------------------------------------------------------------
90 ; READ: Read a particular joystick passed in A.
93 ldx #$00 ; Clear high byte
94 lda JOYSTICK ; Read joystick
95 and #$F3 ; Mask relevant keys