;
; Standard joystick driver for the Supervision
;

        .include        "joy-kernel.inc"
        .include        "joy-error.inc"
        .include        "supervision.inc"

        .macpack        module


; ------------------------------------------------------------------------
; Header. Includes jump table

        module_header   _supervision_stdjoy_joy

; Driver signature

        .byte   $6A, $6F, $79           ; "joy"
        .byte   JOY_API_VERSION         ; Driver API version number

; Library reference

        .addr   $0000

; Jump table.

        .addr   INSTALL
        .addr   UNINSTALL
        .addr   COUNT
        .addr   READJOY

; ------------------------------------------------------------------------
; Constants

JOY_COUNT       = 1             ; Number of joysticks we support


.code

; ------------------------------------------------------------------------
; INSTALL routine. Is called after the driver is loaded into memory. If
; possible, check if the hardware is present and determine the amount of
; memory available.
; Must return an JOY_ERR_xx code in a/x.
;

INSTALL:
        lda     #JOY_ERR_OK
        .assert JOY_ERR_OK = 0, error
        tax

;        rts                     ; Run into UNINSTALL instead

; ------------------------------------------------------------------------
; DEINSTALL routine. Is called before the driver is removed from memory.
; Can do cleanup or whatever. Must not return anything.
;

UNINSTALL:
        rts


; ------------------------------------------------------------------------
; COUNT: Return the total number of available joysticks in a/x.
;
;unsigned char __fastcall__ joy_count (void);

COUNT:
        lda     #<JOY_COUNT
        ldx     #>JOY_COUNT
        rts

; ------------------------------------------------------------------------
; READ: Read a particular joystick passed in A.
;
;unsigned char __fastcall__ joy_read (unsigned char joystick);

READJOY:
        lda     sv_control
        eor     #$FF
        ldx     #0
        rts