From: cuz Date: Sun, 16 Feb 2003 14:41:12 +0000 (+0000) Subject: Moved additional zero page locations into EXTZP segment so they are usable X-Git-Tag: V2.12.0~1699 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=397c068cfbcffd970a8e701ee299c7b0e2fd4694;p=cc65 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 --- diff --git a/libsrc/cbm510/.cvsignore b/libsrc/cbm510/.cvsignore index 7cbbb3de8..7e84fe058 100644 --- a/libsrc/cbm510/.cvsignore +++ b/libsrc/cbm510/.cvsignore @@ -1,3 +1,4 @@ *.emd +*.joy *.tgi - + diff --git a/libsrc/cbm510/Makefile b/libsrc/cbm510/Makefile index cc1c0c0e6..fc883a951 100644 --- a/libsrc/cbm510/Makefile +++ b/libsrc/cbm510/Makefile @@ -14,10 +14,13 @@ %.o: %.s @$(AS) -g -o $@ $(AFLAGS) $< -%.emd: %.o ../runtime/zeropage.o +%.emd: %.o ../runtime/zeropage.o cbm510zp.o @$(LD) -t module -o $@ $^ -%.tgi: %.o ../runtime/zeropage.o +%.joy: %.o ../runtime/zeropage.o cbm510zp.o + @$(LD) -t module -o $@ $^ + +%.tgi: %.o ../runtime/zeropage.o cbm510zp.o @$(LD) -t module -o $@ $^ #-------------------------------------------------------------------------- @@ -39,6 +42,7 @@ OBJS = _scrsize.o \ conio.o \ cputc.o \ crt0.o \ + extzp.o \ kbhit.o \ kirq.o \ kplot.o \ @@ -48,7 +52,6 @@ OBJS = _scrsize.o \ peeksys.o \ pokesys.o \ randomize.o \ - readjoy.o \ revers.o \ rs232.o \ tgi_mode_table.o @@ -56,22 +59,24 @@ OBJS = _scrsize.o \ #-------------------------------------------------------------------------- # Drivers -TGIS = - EMDS = cbm510-ram.emd +JOYS = cbm510-stdjoy.joy + +TGIS = + #-------------------------------------------------------------------------- # Targets .PHONY: all clean zap -all: $(OBJS) $(EMDS) $(TGIS) +all: $(OBJS) $(EMDS) $(JOYS) $(TGIS) ../runtime/zeropage.o: $(MAKE) -C $(dir $@) $(notdir $@) clean: - @rm -f $(OBJS) $(EMDS:.emd=.o) $(TGIS:.tgi=.o) + @rm -f $(OBJS) $(EMDS:.emd=.o) $(JOYS:.joy=.o) $(TGIS:.tgi=.o) zap: clean @rm -f $(EMDS) $(JOYS) $(TGIS) diff --git a/libsrc/cbm510/cbm510-stdjoy.s b/libsrc/cbm510/cbm510-stdjoy.s new file mode 100644 index 000000000..20d8c30df --- /dev/null +++ b/libsrc/cbm510/cbm510-stdjoy.s @@ -0,0 +1,140 @@ +; +; Standard joystick driver for the Commodore 510 (aka P500). May be used +; multiple times when linked to the statically application. +; +; Ullrich von Bassewitz, 2003-02-16 +; + + .include "zeropage.inc" + .include "extzp.inc" + + .include "joy-kernel.inc" + .include "joy-error.inc" + .include "cbm510.inc" + + .macpack generic + + +; ------------------------------------------------------------------------ +; Header. Includes jump table + +.segment "JUMPTABLE" + +; Driver signature + + .byte $6A, $6F, $79 ; "joy" + .byte $00 ; Driver API version number + +; Button state masks (8 values) + + .byte $01 ; JOY_UP + .byte $02 ; JOY_DOWN + .byte $04 ; JOY_LEFT + .byte $08 ; JOY_RIGHT + .byte $10 ; JOY_FIRE + .byte $00 ; Future expansion + .byte $00 ; Future expansion + .byte $00 ; Future expansion + +; Jump table. + + .word INSTALL + .word UNINSTALL + .word COUNT + .word READ + +; ------------------------------------------------------------------------ +; Constants + +JOY_COUNT = 2 ; Number of joysticks we support + + +; ------------------------------------------------------------------------ +; Data. + + +.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 + +; 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 + rts + +; ------------------------------------------------------------------------ +; READ: Read a particular joystick passed in A. +; + +READ: ldx #$0F ; Switch to the system bank + stx IndReg + tax ; Save joystick number + +; Get the direction bits + + ldy #CIA_PRB + lda (cia2),y ; Read joystick inputs + sta tmp1 + +; Get the fire bits + + ldy #CIA_PRA + lda (cia2),y + +; Make the result value + + cpx #$00 ; Joystick 0? + bne @L1 ; Jump if no + +; Joystick 1, fire is in bit 6, direction in bit 0-3 + + asl a + jmp @L2 + +; Joystick 2, fire is in bit 7, direction in bit 5-7 + +@L1: ldx #$00 ; High byte of return value + lsr tmp1 + lsr tmp1 + lsr tmp1 + lsr tmp1 + +; Mask the relavant bits, get the fire bit + +@L2: asl a ; Fire bit into carry + lda tmp1 + and #$0F + bcc @L3 + ora #$10 +@L3: eor #$1F ; All bits are inverted + +; Switch back to the execution bank and return the joystick mask in a/x + + ldy ExecReg + sty IndReg + rts + diff --git a/libsrc/cbm510/crt0.s b/libsrc/cbm510/crt0.s index a0b9c844b..6b6ca1676 100644 --- a/libsrc/cbm510/crt0.s +++ b/libsrc/cbm510/crt0.s @@ -5,18 +5,18 @@ ; .export _exit - .exportzp vic, sid, cia1, cia2, acia, tpi1, tpi2, ktab1 - .exportzp ktab2, ktab3, ktab4, time, RecvBuf, SendBuf .import _clrscr, initlib, donelib .import push0, _main .import __CHARRAM_START__, __CHARRAM_SIZE__, __VIDRAM_START__ + .import __EXTZP_RUN__, __EXTZP_SIZE__ .import __BSS_RUN__, __BSS_SIZE__ .import irq, nmi .import k_irq, k_nmi, PLOT, UDTIM, SCNKEY .include "zeropage.inc" - .include "cbm510.inc" + .include "extzp.inc" + .include "cbm510.inc" ; ------------------------------------------------------------------------ @@ -53,33 +53,12 @@ ; To make things more simple, make the code of this module absolute. .org $0001 -Head: .byte $03,$00,$11,$00,$0a,$00,$81,$20,$49,$b2,$30,$20,$a4,$20,$34,$00 +Head: .byte $03,$00,$11,$00,$0a,$00,$81,$20,$49,$b2,$30,$20,$a4,$20,$34,$00 .byte $19,$00,$14,$00,$87,$20,$4a,$00,$27,$00,$1e,$00,$97,$20,$32,$35 .byte $36,$aa,$49,$2c,$4a,$00,$2f,$00,$28,$00,$82,$20,$49,$00,$39,$00 .byte $32,$00,$9e,$20,$32,$35,$36,$00,$4f,$00,$3c,$00,$83,$20,$31,$32 .byte $30,$2c,$31,$36,$39,$2c,$30,$2c,$31,$33,$33,$2c,$30,$00,$00,$00 -; Since we need some vectors to access stuff in the system bank for our own, -; we will include them here, starting from $60: - - .res $60-* - -vic: .word $d800 -sid: .word $da00 -cia1: .word $db00 -cia2: .word $dc00 -acia: .word $dd00 -tpi1: .word $de00 -tpi2: .word $df00 -ktab1: .word $eab1 -ktab2: .word $eb11 -ktab3: .word $eb71 -ktab4: .word $ebd1 -time: .dword $0000 -RecvBuf: .word $0100 ; RS232 received buffer -SendBuf: .word $0200 ; RS232 send buffer - - ; The code in the target bank when switching back will be put at the bottom ; of the stack. We will jump here to switch segments. The range $F2..$FF is ; not used by any kernal routine. @@ -111,10 +90,18 @@ Back: ldx spsave ldy #vectable_size L0: lda vectable-1,y - sta $FF80,y + sta $FF81-1,y dey bne L0 +; Initialize the extended zero page variables + + ldx #zptable_size +L1: lda zptable-1,x + sta <(__EXTZP_RUN__-1),x + dex + bne L1 + ; Switch the indirect segment to the system bank lda #$0F @@ -127,19 +114,19 @@ L0: lda vectable-1,y lda #$00 sta ptr1+1 ldy #$62-1 -L1: lda (ptr1),y +L2: lda (ptr1),y sta $90,y dey - bpl L1 + bpl L2 ; Copy the page 3 vectors in place ldy #$00 -L2: lda p3vectable,y +L3: lda p3vectable,y sta $300,y iny cpy #p3vectable_size - bne L2 + bne L3 ; Copy the rest of page 3 from the system bank @@ -147,15 +134,15 @@ L2: lda p3vectable,y sta ptr1 lda #$03 sta ptr1+1 -L3: lda (ptr1),y +L4: lda (ptr1),y sta $300,y iny - bne L3 + bne L4 ; Set the indirect segment to bank we're executing in lda ExecReg - sta IndReg + sta IndReg ; Zero the BSS segment. We will do that here instead calling the routine ; in the common library, since we have the memory anyway, and this way, @@ -163,10 +150,10 @@ L3: lda (ptr1),y lda #<__BSS_RUN__ sta ptr1 - lda #>__BSS_RUN__ + lda #>__BSS_RUN__ sta ptr1+1 - lda #0 - tay + lda #0 + tay ; Clear full pages @@ -199,7 +186,7 @@ Z4: ; We expect to be in page 2 now .if (* < $1FD) - jmp $200 + jmp $200 .res $200-* .endif .if (* < $200) @@ -308,6 +295,23 @@ ccopy2: lda __VIDRAM_START__,y ; Additional data that we need for initialization and that's overwritten ; later +zptable: + .word $d800 ; vic + .word $da00 ; sid + .word $db00 ; cia1 + .word $dc00 ; cia2 + .word $dd00 ; acia + .word $de00 ; tpi1 + .word $df00 ; tpi2 + .word $eab1 ; ktab1 + .word $eb11 ; ktab2 + .word $eb71 ; ktab3 + .word $ebd1 ; ktab4 + .dword $0000 ; time + .word $0100 ; RecvBuf + .word $0200 ; SendBuf +zptable_size = * - zptable + vectable: jmp $0000 ; CINT jmp $0000 ; IOINIT @@ -338,7 +342,7 @@ vectable: jmp $0000 ; BASIN jmp $0000 ; BSOUT jmp $0000 ; LOAD - jmp $0000 ; SAVE + jmp $0000 ; SAVE jmp SETTIM jmp RDTIM jmp $0000 ; STOP @@ -439,8 +443,8 @@ reset_size = * - reset .export IOBASE .proc IOBASE - ldx cia2 - ldy cia2+1 + ldx cia2 + ldy cia2+1 rts .endproc diff --git a/libsrc/cbm510/extzp.inc b/libsrc/cbm510/extzp.inc new file mode 100644 index 000000000..e80c27bc4 --- /dev/null +++ b/libsrc/cbm510/extzp.inc @@ -0,0 +1,11 @@ +; +; Ullrich von Bassewitz, 2003-02-16 +; +; Additional zero page locations for the CBM510. +; + +; ------------------------------------------------------------------------ + + .globalzp vic, sid, cia1, cia2, acia, tpi1, tpi2, ktab1 + .globalzp ktab2, ktab3, ktab4, time, RecvBuf, SendBuf + diff --git a/libsrc/cbm510/extzp.s b/libsrc/cbm510/extzp.s new file mode 100644 index 000000000..a5297d199 --- /dev/null +++ b/libsrc/cbm510/extzp.s @@ -0,0 +1,30 @@ +; +; Ullrich von Bassewitz, 2003-02-16 +; +; Additional zero page locations for the CBM510. +; NOTE: The zeropage locations contained in this file get initialized +; in the startup code, so if you change anything here, be sure to check +; not only the linker config, but also the startup file. +; + +; ------------------------------------------------------------------------ + + .include "extzp.inc" + +.segment "EXTZP", zeropage + +vic: .res 2 +sid: .res 2 +cia1: .res 2 +cia2: .res 2 +acia: .res 2 +tpi1: .res 2 +tpi2: .res 2 +ktab1: .res 2 +ktab2: .res 2 +ktab3: .res 2 +ktab4: .res 2 +time: .res 4 +RecvBuf: .res 2 ; RS232 receive buffer +SendBuf: .res 2 ; RS232 transmit buffer + diff --git a/libsrc/cbm510/readjoy.s b/libsrc/cbm510/readjoy.s deleted file mode 100644 index 9ebfe7413..000000000 --- a/libsrc/cbm510/readjoy.s +++ /dev/null @@ -1,62 +0,0 @@ -; -; Ullrich von Bassewitz, 23.09.1998 -; -; unsigned readjoy (unsigned char joy); -; - - .export _readjoy - .import sys_bank, restore_bank - .importzp cia2, tmp1 - - .include "cbm510.inc" - -; ------------------------------------------------------------------------ -; unsigned __fastcall__ readjoy (unsigned char joy); - - -.proc _readjoy - - jsr sys_bank ; Switch to the system bank - tax ; Save joystick number - -; Get the direction bits - - ldy #CIA_PRB - lda (cia2),y ; Read joystick inputs - sta tmp1 - -; Get the fire bits - - ldy #CIA_PRA - lda (cia2),y - -; Make the result value - - cpx #$00 ; Joystick 0? - bne @L1 ; Jump if no - -; Joystick 1, fire is in bit 6, direction in bit 0-3 - - asl a - jmp @L2 - -; Joystick 2, fire is in bit 7, direction in bit 5-7 - -@L1: ldy #$00 ; High byte of return value - lsr tmp1 - lsr tmp1 - lsr tmp1 - lsr tmp1 - -; Mask the relavant bits, get the fire bit - -@L2: asl a ; Fire bit into carry - lda tmp1 - and #$0F - bcc @L3 - ora #$10 -@L3: eor #$1F ; All bits are inverted - jmp restore_bank - -.endproc -