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"
18 ; ------------------------------------------------------------------------
19 ; Header. Includes jump table
21 module_header _c64_stdjoy_joy
25 .byte $6A, $6F, $79 ; "joy"
26 .byte JOY_API_VERSION ; Driver API version number
32 ; Button state masks (8 values)
39 .byte $00 ; JOY_FIRE2 unavailable
40 .byte $00 ; Future expansion
41 .byte $00 ; Future expansion
49 .addr 0 ; IRQ entry unused
51 ; ------------------------------------------------------------------------
54 JOY_COUNT = 2 ; Number of joysticks we support
57 ; ------------------------------------------------------------------------
63 ; ------------------------------------------------------------------------
64 ; INSTALL routine. Is called after the driver is loaded into memory. If
65 ; possible, check if the hardware is present and determine the amount of
67 ; Must return an JOY_ERR_xx code in a/x.
74 ; rts ; Run into UNINSTALL instead
76 ; ------------------------------------------------------------------------
77 ; UNINSTALL routine. Is called before the driver is removed from memory.
78 ; Can do cleanup or whatever. Must not return anything.
85 ; ------------------------------------------------------------------------
86 ; COUNT: Return the total number of available joysticks in a/x.
94 ; ------------------------------------------------------------------------
95 ; READ: Read a particular joystick passed in A.
98 READ: tax ; Joystick number into X