1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-27 00:29:31 +00:00
cc65/libsrc/supervision/joy/supervision-stdjoy.s

83 lines
2.0 KiB
ArmAsm
Raw Normal View History

2017-11-21 05:53:26 +00:00
;
; 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 $0000
; Jump table.
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READJOY
; ------------------------------------------------------------------------
; Constants
JOY_COUNT = 1 ; Number of joysticks we support
.code
; ------------------------------------------------------------------------
; INSTALL routine. Is called after the driver is loaded into memory. If
; possible, check if the hardware is present and determine the amount of
; memory available.
; Must return an JOY_ERR_xx code in a/x.
;
INSTALL:
lda #<JOY_ERR_OK
ldx #>JOY_ERR_OK
; rts ; Run into UNINSTALL instead
; ------------------------------------------------------------------------
; DEINSTALL routine. Is called before the driver is removed from memory.
; Can do cleanup or whatever. Must not return anything.
;
UNINSTALL:
rts
; ------------------------------------------------------------------------
; COUNT: Return the total number of available joysticks in a/x.
;
;unsigned char __fastcall__ joy_count (void);
COUNT:
lda #<JOY_COUNT
ldx #>JOY_COUNT
rts
; ------------------------------------------------------------------------
; READ: Read a particular joystick passed in A.
;
;unsigned char __fastcall__ joy_read (unsigned char joystick);
READJOY:
lda sv_control
2018-06-06 19:18:47 +00:00
eor #$FF
2017-11-21 05:53:26 +00:00
ldx #0
rts