2 ; Standard joystick driver for the C64. May be used multiple times when linked
3 ; to the statically application.
5 ; Ullrich von Bassewitz, 2002-12-20
8 .include "zeropage.inc"
10 .include "joy-kernel.inc"
11 .include "joy-error.inc"
17 ; ------------------------------------------------------------------------
18 ; Header. Includes jump table
24 .byte $6A, $6F, $79 ; "joy"
25 .byte JOY_API_VERSION ; Driver API version number
31 ; Button state masks (8 values)
38 .byte $00 ; JOY_FIRE2 unavailable
39 .byte $00 ; Future expansion
40 .byte $00 ; Future expansion
48 .addr 0 ; IRQ entry unused
50 ; ------------------------------------------------------------------------
53 JOY_COUNT = 2 ; Number of joysticks we support
56 ; ------------------------------------------------------------------------
62 ; ------------------------------------------------------------------------
63 ; INSTALL routine. Is called after the driver is loaded into memory. If
64 ; possible, check if the hardware is present and determine the amount of
66 ; Must return an JOY_ERR_xx code in a/x.
73 ; rts ; Run into UNINSTALL instead
75 ; ------------------------------------------------------------------------
76 ; UNINSTALL routine. Is called before the driver is removed from memory.
77 ; Can do cleanup or whatever. Must not return anything.
84 ; ------------------------------------------------------------------------
85 ; COUNT: Return the total number of available joysticks in a/x.
93 ; ------------------------------------------------------------------------
94 ; READ: Read a particular joystick passed in A.
97 READ: tax ; Joystick number into X