mirror of
https://github.com/cc65/cc65.git
synced 2025-01-13 09:31:53 +00:00
Moved additional zero page locations into EXTZP segment so they are usable
inside modules. Removed readjoy.s and added a loadable joystick driver instead. git-svn-id: svn://svn.cc65.org/cc65/trunk@1989 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
parent
0c0e27fa02
commit
397c068cfb
@ -1,3 +1,4 @@
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*.emd
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*.joy
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*.tgi
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@ -14,10 +14,13 @@
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%.o: %.s
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@$(AS) -g -o $@ $(AFLAGS) $<
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%.emd: %.o ../runtime/zeropage.o
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%.emd: %.o ../runtime/zeropage.o cbm510zp.o
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@$(LD) -t module -o $@ $^
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%.tgi: %.o ../runtime/zeropage.o
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%.joy: %.o ../runtime/zeropage.o cbm510zp.o
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@$(LD) -t module -o $@ $^
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%.tgi: %.o ../runtime/zeropage.o cbm510zp.o
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@$(LD) -t module -o $@ $^
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#--------------------------------------------------------------------------
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@ -39,6 +42,7 @@ OBJS = _scrsize.o \
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conio.o \
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cputc.o \
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crt0.o \
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extzp.o \
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kbhit.o \
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kirq.o \
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kplot.o \
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@ -48,7 +52,6 @@ OBJS = _scrsize.o \
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peeksys.o \
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pokesys.o \
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randomize.o \
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readjoy.o \
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revers.o \
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rs232.o \
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tgi_mode_table.o
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@ -56,22 +59,24 @@ OBJS = _scrsize.o \
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#--------------------------------------------------------------------------
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# Drivers
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TGIS =
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EMDS = cbm510-ram.emd
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JOYS = cbm510-stdjoy.joy
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TGIS =
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#--------------------------------------------------------------------------
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# Targets
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.PHONY: all clean zap
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all: $(OBJS) $(EMDS) $(TGIS)
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all: $(OBJS) $(EMDS) $(JOYS) $(TGIS)
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../runtime/zeropage.o:
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$(MAKE) -C $(dir $@) $(notdir $@)
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clean:
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@rm -f $(OBJS) $(EMDS:.emd=.o) $(TGIS:.tgi=.o)
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@rm -f $(OBJS) $(EMDS:.emd=.o) $(JOYS:.joy=.o) $(TGIS:.tgi=.o)
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zap: clean
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@rm -f $(EMDS) $(JOYS) $(TGIS)
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140
libsrc/cbm510/cbm510-stdjoy.s
Normal file
140
libsrc/cbm510/cbm510-stdjoy.s
Normal file
@ -0,0 +1,140 @@
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;
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; Standard joystick driver for the Commodore 510 (aka P500). May be used
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; multiple times when linked to the statically application.
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;
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; Ullrich von Bassewitz, 2003-02-16
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;
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.include "zeropage.inc"
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.include "extzp.inc"
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.include "joy-kernel.inc"
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.include "joy-error.inc"
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.include "cbm510.inc"
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.macpack generic
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; ------------------------------------------------------------------------
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; Header. Includes jump table
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.segment "JUMPTABLE"
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; Driver signature
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.byte $6A, $6F, $79 ; "joy"
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.byte $00 ; Driver API version number
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; Button state masks (8 values)
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.byte $01 ; JOY_UP
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.byte $02 ; JOY_DOWN
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.byte $04 ; JOY_LEFT
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.byte $08 ; JOY_RIGHT
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.byte $10 ; JOY_FIRE
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.byte $00 ; Future expansion
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.byte $00 ; Future expansion
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.byte $00 ; Future expansion
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; Jump table.
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.word INSTALL
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.word UNINSTALL
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.word COUNT
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.word READ
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; ------------------------------------------------------------------------
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; Constants
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JOY_COUNT = 2 ; Number of joysticks we support
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; ------------------------------------------------------------------------
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; Data.
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.code
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; ------------------------------------------------------------------------
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; INSTALL routine. Is called after the driver is loaded into memory. If
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; possible, check if the hardware is present and determine the amount of
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; memory available.
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; Must return an JOY_ERR_xx code in a/x.
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;
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INSTALL:
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lda #<JOY_ERR_OK
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ldx #>JOY_ERR_OK
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; rts ; Run into UNINSTALL instead
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; ------------------------------------------------------------------------
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; UNINSTALL routine. Is called before the driver is removed from memory.
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; Can do cleanup or whatever. Must not return anything.
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;
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UNINSTALL:
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rts
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; ------------------------------------------------------------------------
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; COUNT: Return the total number of available joysticks in a/x.
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;
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COUNT:
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lda #<JOY_COUNT
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ldx #>JOY_COUNT
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rts
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; ------------------------------------------------------------------------
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; READ: Read a particular joystick passed in A.
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;
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READ: ldx #$0F ; Switch to the system bank
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stx IndReg
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tax ; Save joystick number
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; Get the direction bits
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ldy #CIA_PRB
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lda (cia2),y ; Read joystick inputs
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sta tmp1
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; Get the fire bits
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ldy #CIA_PRA
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lda (cia2),y
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; Make the result value
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cpx #$00 ; Joystick 0?
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bne @L1 ; Jump if no
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; Joystick 1, fire is in bit 6, direction in bit 0-3
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asl a
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jmp @L2
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; Joystick 2, fire is in bit 7, direction in bit 5-7
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@L1: ldx #$00 ; High byte of return value
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lsr tmp1
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lsr tmp1
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lsr tmp1
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lsr tmp1
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; Mask the relavant bits, get the fire bit
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@L2: asl a ; Fire bit into carry
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lda tmp1
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and #$0F
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bcc @L3
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ora #$10
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@L3: eor #$1F ; All bits are inverted
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; Switch back to the execution bank and return the joystick mask in a/x
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ldy ExecReg
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sty IndReg
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rts
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@ -5,18 +5,18 @@
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;
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.export _exit
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.exportzp vic, sid, cia1, cia2, acia, tpi1, tpi2, ktab1
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.exportzp ktab2, ktab3, ktab4, time, RecvBuf, SendBuf
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.import _clrscr, initlib, donelib
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.import push0, _main
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.import __CHARRAM_START__, __CHARRAM_SIZE__, __VIDRAM_START__
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.import __EXTZP_RUN__, __EXTZP_SIZE__
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.import __BSS_RUN__, __BSS_SIZE__
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.import irq, nmi
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.import k_irq, k_nmi, PLOT, UDTIM, SCNKEY
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.include "zeropage.inc"
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.include "cbm510.inc"
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.include "extzp.inc"
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.include "cbm510.inc"
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; ------------------------------------------------------------------------
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@ -53,33 +53,12 @@
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; To make things more simple, make the code of this module absolute.
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.org $0001
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Head: .byte $03,$00,$11,$00,$0a,$00,$81,$20,$49,$b2,$30,$20,$a4,$20,$34,$00
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Head: .byte $03,$00,$11,$00,$0a,$00,$81,$20,$49,$b2,$30,$20,$a4,$20,$34,$00
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.byte $19,$00,$14,$00,$87,$20,$4a,$00,$27,$00,$1e,$00,$97,$20,$32,$35
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.byte $36,$aa,$49,$2c,$4a,$00,$2f,$00,$28,$00,$82,$20,$49,$00,$39,$00
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.byte $32,$00,$9e,$20,$32,$35,$36,$00,$4f,$00,$3c,$00,$83,$20,$31,$32
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.byte $30,$2c,$31,$36,$39,$2c,$30,$2c,$31,$33,$33,$2c,$30,$00,$00,$00
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; Since we need some vectors to access stuff in the system bank for our own,
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; we will include them here, starting from $60:
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.res $60-*
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vic: .word $d800
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sid: .word $da00
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cia1: .word $db00
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cia2: .word $dc00
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acia: .word $dd00
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tpi1: .word $de00
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tpi2: .word $df00
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ktab1: .word $eab1
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ktab2: .word $eb11
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ktab3: .word $eb71
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ktab4: .word $ebd1
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time: .dword $0000
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RecvBuf: .word $0100 ; RS232 received buffer
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SendBuf: .word $0200 ; RS232 send buffer
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; The code in the target bank when switching back will be put at the bottom
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; of the stack. We will jump here to switch segments. The range $F2..$FF is
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; not used by any kernal routine.
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@ -111,10 +90,18 @@ Back: ldx spsave
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ldy #vectable_size
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L0: lda vectable-1,y
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sta $FF80,y
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sta $FF81-1,y
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dey
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bne L0
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; Initialize the extended zero page variables
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ldx #zptable_size
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L1: lda zptable-1,x
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sta <(__EXTZP_RUN__-1),x
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dex
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bne L1
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; Switch the indirect segment to the system bank
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lda #$0F
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@ -127,19 +114,19 @@ L0: lda vectable-1,y
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lda #$00
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sta ptr1+1
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ldy #$62-1
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L1: lda (ptr1),y
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L2: lda (ptr1),y
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sta $90,y
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dey
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bpl L1
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bpl L2
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; Copy the page 3 vectors in place
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ldy #$00
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L2: lda p3vectable,y
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L3: lda p3vectable,y
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sta $300,y
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iny
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cpy #p3vectable_size
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bne L2
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bne L3
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; Copy the rest of page 3 from the system bank
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@ -147,15 +134,15 @@ L2: lda p3vectable,y
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sta ptr1
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lda #$03
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sta ptr1+1
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L3: lda (ptr1),y
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L4: lda (ptr1),y
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sta $300,y
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iny
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bne L3
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bne L4
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; Set the indirect segment to bank we're executing in
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lda ExecReg
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sta IndReg
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sta IndReg
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; Zero the BSS segment. We will do that here instead calling the routine
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; in the common library, since we have the memory anyway, and this way,
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@ -163,10 +150,10 @@ L3: lda (ptr1),y
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lda #<__BSS_RUN__
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sta ptr1
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lda #>__BSS_RUN__
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lda #>__BSS_RUN__
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sta ptr1+1
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lda #0
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tay
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lda #0
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tay
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; Clear full pages
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@ -199,7 +186,7 @@ Z4:
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; We expect to be in page 2 now
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.if (* < $1FD)
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jmp $200
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jmp $200
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.res $200-*
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.endif
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.if (* < $200)
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@ -308,6 +295,23 @@ ccopy2: lda __VIDRAM_START__,y
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; Additional data that we need for initialization and that's overwritten
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; later
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zptable:
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.word $d800 ; vic
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.word $da00 ; sid
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.word $db00 ; cia1
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.word $dc00 ; cia2
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.word $dd00 ; acia
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.word $de00 ; tpi1
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.word $df00 ; tpi2
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.word $eab1 ; ktab1
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.word $eb11 ; ktab2
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.word $eb71 ; ktab3
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.word $ebd1 ; ktab4
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.dword $0000 ; time
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.word $0100 ; RecvBuf
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.word $0200 ; SendBuf
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zptable_size = * - zptable
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vectable:
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jmp $0000 ; CINT
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jmp $0000 ; IOINIT
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@ -338,7 +342,7 @@ vectable:
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jmp $0000 ; BASIN
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jmp $0000 ; BSOUT
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jmp $0000 ; LOAD
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jmp $0000 ; SAVE
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jmp $0000 ; SAVE
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jmp SETTIM
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jmp RDTIM
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jmp $0000 ; STOP
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@ -439,8 +443,8 @@ reset_size = * - reset
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.export IOBASE
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.proc IOBASE
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ldx cia2
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ldy cia2+1
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ldx cia2
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ldy cia2+1
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rts
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.endproc
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11
libsrc/cbm510/extzp.inc
Normal file
11
libsrc/cbm510/extzp.inc
Normal file
@ -0,0 +1,11 @@
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;
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; Ullrich von Bassewitz, 2003-02-16
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;
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; Additional zero page locations for the CBM510.
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;
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; ------------------------------------------------------------------------
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.globalzp vic, sid, cia1, cia2, acia, tpi1, tpi2, ktab1
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.globalzp ktab2, ktab3, ktab4, time, RecvBuf, SendBuf
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30
libsrc/cbm510/extzp.s
Normal file
30
libsrc/cbm510/extzp.s
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@ -0,0 +1,30 @@
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;
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; Ullrich von Bassewitz, 2003-02-16
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;
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; Additional zero page locations for the CBM510.
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; NOTE: The zeropage locations contained in this file get initialized
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; in the startup code, so if you change anything here, be sure to check
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; not only the linker config, but also the startup file.
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;
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; ------------------------------------------------------------------------
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.include "extzp.inc"
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.segment "EXTZP", zeropage
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vic: .res 2
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sid: .res 2
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cia1: .res 2
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cia2: .res 2
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acia: .res 2
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tpi1: .res 2
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tpi2: .res 2
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ktab1: .res 2
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ktab2: .res 2
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ktab3: .res 2
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ktab4: .res 2
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time: .res 4
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RecvBuf: .res 2 ; RS232 receive buffer
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SendBuf: .res 2 ; RS232 transmit buffer
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@ -1,62 +0,0 @@
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;
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; Ullrich von Bassewitz, 23.09.1998
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;
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; unsigned readjoy (unsigned char joy);
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;
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.export _readjoy
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.import sys_bank, restore_bank
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.importzp cia2, tmp1
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.include "cbm510.inc"
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; ------------------------------------------------------------------------
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; unsigned __fastcall__ readjoy (unsigned char joy);
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.proc _readjoy
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jsr sys_bank ; Switch to the system bank
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tax ; Save joystick number
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; Get the direction bits
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ldy #CIA_PRB
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lda (cia2),y ; Read joystick inputs
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sta tmp1
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; Get the fire bits
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ldy #CIA_PRA
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lda (cia2),y
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; Make the result value
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cpx #$00 ; Joystick 0?
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bne @L1 ; Jump if no
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; Joystick 1, fire is in bit 6, direction in bit 0-3
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asl a
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jmp @L2
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; Joystick 2, fire is in bit 7, direction in bit 5-7
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@L1: ldy #$00 ; High byte of return value
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lsr tmp1
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lsr tmp1
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lsr tmp1
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lsr tmp1
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; Mask the relavant bits, get the fire bit
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@L2: asl a ; Fire bit into carry
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lda tmp1
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and #$0F
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bcc @L3
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ora #$10
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@L3: eor #$1F ; All bits are inverted
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jmp restore_bank
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.endproc
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Reference in New Issue
Block a user