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Added nes-stdjoy.s from Stefan Haubenthal

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3267 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2004-10-26 21:01:50 +00:00
parent 1cb722ba7d
commit 45b6a6f20c
2 changed files with 169 additions and 27 deletions
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41
libsrc/nes/Makefile
View File

@ -26,12 +26,25 @@ CFLAGS = -Osir -g -T -t $(SYS) --forget-inc-paths -I . -I ../../include
%.o: %.s
@$(AS) -g -o $@ $(AFLAGS) $<
%.emd: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
%.joy: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
%.mou: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
%.ser: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
%.tgi: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
#--------------------------------------------------------------------------
# Object files
C_OBJS =
S_OBJS = _scrsize.o \
OBJS = _scrsize.o \
cclear.o \
chline.o \
clock.o \
@ -56,15 +69,33 @@ S_OBJS = _scrsize.o \
wherex.o \
wherey.o
#--------------------------------------------------------------------------
# Drivers
EMDS =
JOYS = nes-stdjoy.joy
MOUS =
SERS =
TGIS =
#--------------------------------------------------------------------------
# Targets
.PHONY: all clean zap
all: $(C_OBJS) $(S_OBJS)
all: $(OBJS) $(EMDS) $(JOYS) $(MOUS) $(SERS) $(TGIS)
../runtime/zeropage.o:
$(MAKE) -C $(dir $@) $(notdir $@)
clean:
@$(RM) $(C_OBJS:.c=.s) $(C_OBJS) $(S_OBJS)
@$(RM) $(OBJS) $(EMDS:.emd=.o) $(JOYS:.joy=.o) $(MOUS:.mou=.o) $(SERS:.ser=.o) $(TGIS:.tgi=.o)
zap: clean
@$(RM) $(EMDS) $(JOYS) $(MOUS) $(SERS) $(TGIS)

111
libsrc/nes/nes-stdjoy.s Normal file
View File

@ -0,0 +1,111 @@
;
; Standard joypad driver for the NES. May be used multiple times when
; linked to the statically application.
;
; Ullrich von Bassewitz, 2003-05-02
; Stefan Haubenthal, 2004-10-05
;
.include "zeropage.inc"
.include "joy-kernel.inc"
.include "joy-error.inc"
.include "nes.inc"
; ------------------------------------------------------------------------
; Header. Includes jump table
.segment "JUMPTABLE"
; Driver signature
.byte $6A, $6F, $79 ; "joy"
.byte JOY_API_VERSION ; Driver API version number
; Button state masks (8 values)
.byte $08 ; JOY_UP
.byte $04 ; JOY_DOWN
.byte $02 ; JOY_LEFT
.byte $01 ; JOY_RIGHT
.byte $80 ; JOY_FIRE (A)
.byte $40 ; JOY_FIRE2 (B)
.byte $20 ; JOY_FIRE3 (Select)
.byte $10 ; JOY_FIRE4 (Start)
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READJOY
; ------------------------------------------------------------------------
; Constants
JOY_COUNT = 2 ; 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 #0
; rts ; Run into UNINSTALL instead
; ------------------------------------------------------------------------
; UNINSTALL 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.
;
COUNT:
lda #JOY_COUNT
ldx #0
rts
; ------------------------------------------------------------------------
; READ: Read a particular joystick passed in A.
;
READJOY:
and #$01 ; Fix joystick number
tay ; Joystick number (0,1) into Y
; Read joystick
lda #1
sta APU_PAD1,y
lda #0
sta APU_PAD1,y
sta tmp1
ldx #8
@L1: asl tmp1
lda APU_PAD1,y
and #$01
beq @L2
lda tmp1
ora #$01
sta tmp1
@L2: dex
bne @L1
lda tmp1
; ldx #$00 ; fix X
rts