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Loadable mouse driver for the C128

git-svn-id: svn://svn.cc65.org/cc65/trunk@2966 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2004-03-29 17:27:48 +00:00
parent 663bce6cd7
commit e4de88958e
6 changed files with 526 additions and 503 deletions

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@ -163,7 +163,7 @@ c64lib:
# C128 # C128
c128lib: c128lib:
for i in c128 cbm common runtime conio dbg em joystick serial tgi zlib; do \ for i in c128 cbm common runtime conio dbg em joystick mouse serial tgi zlib; do \
AS=$(AS) \ AS=$(AS) \
CC=$(CC) \ CC=$(CC) \
LD=$(LD) \ LD=$(LD) \
@ -175,10 +175,11 @@ c128lib:
mv c128/crt0.o c128.o mv c128/crt0.o c128.o
cp c128/*.emd . cp c128/*.emd .
cp c128/*.joy . cp c128/*.joy .
cp c128/*.mou .
cp c128/*.ser . cp c128/*.ser .
cp c128/c128-640-200-2.tgi c128-vdc.tgi cp c128/c128-640-200-2.tgi c128-vdc.tgi
cp c128/c128-640-480-2.tgi c128-vdc2.tgi cp c128/c128-640-480-2.tgi c128-vdc2.tgi
#----------------------------------------------------------------------------- #-----------------------------------------------------------------------------
# Commdore P500 / CBM 5x0 # Commdore P500 / CBM 5x0

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@ -20,6 +20,9 @@
%.joy: %.o ../runtime/zeropage.o %.joy: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^ @$(LD) -t module -o $@ $^
%.mou: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^
%.ser: %.o ../runtime/zeropage.o %.ser: %.o ../runtime/zeropage.o
@$(LD) -t module -o $@ $^ @$(LD) -t module -o $@ $^
@ -44,7 +47,7 @@ OBJS = _scrsize.o \
kbhit.o \ kbhit.o \
kernal.o \ kernal.o \
mainargs.o \ mainargs.o \
mouse.o \ mcbdefault.o \
randomize.o \ randomize.o \
revers.o \ revers.o \
slow.o \ slow.o \
@ -59,6 +62,8 @@ EMDS = c128-georam.emd c128-ram.emd c128-ramcart.emd c128-reu.emd c128-vdc.emd
JOYS = c128-ptvjoy.joy c128-stdjoy.joy JOYS = c128-ptvjoy.joy c128-stdjoy.joy
MOUS = c128-1351.mou
SERS = c128-swlink.ser SERS = c128-swlink.ser
TGIS = c128-640-200-2.tgi c128-640-480-2.tgi TGIS = c128-640-200-2.tgi c128-640-480-2.tgi
@ -68,16 +73,16 @@ TGIS = c128-640-200-2.tgi c128-640-480-2.tgi
.PHONY: all clean zap .PHONY: all clean zap
all: $(OBJS) $(EMDS) $(JOYS) $(SERS) $(TGIS) all: $(OBJS) $(EMDS) $(JOYS) $(MOUS) $(SERS) $(TGIS)
../runtime/zeropage.o: ../runtime/zeropage.o:
$(MAKE) -C $(dir $@) $(notdir $@) $(MAKE) -C $(dir $@) $(notdir $@)
clean: clean:
@$(RM) $(OBJS) $(EMDS:.emd=.o) $(JOYS:.joy=.o) $(SERS:.ser=.o) $(TGIS:.tgi=.o) @$(RM) $(OBJS) $(EMDS:.emd=.o) $(JOYS:.joy=.o) $(MOUS:.mou=.o) $(SERS:.ser=.o) $(TGIS:.tgi=.o)
zap: clean zap: clean
@$(RM) $(EMDS) $(JOYS) $(SERS) $(TGIS) @$(RM) $(EMDS) $(JOYS) $(MOUS) $(SERS) $(TGIS)

402
libsrc/c128/c128-1351.s Normal file
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@ -0,0 +1,402 @@
;
; Driver for the 1351 proportional mouse. Parts of the code are from
; the Commodore 1351 mouse users guide.
;
; Ullrich von Bassewitz, 2003-12-29
;
.include "zeropage.inc"
.include "mouse-kernel.inc"
.include "c128.inc"
.macpack generic
; ------------------------------------------------------------------------
; Header. Includes jump table
.segment "JUMPTABLE"
HEADER:
; Driver signature
.byte $6d, $6f, $75 ; "mou"
.byte MOUSE_API_VERSION ; Mouse driver API version number
; Jump table.
.addr INSTALL
.addr UNINSTALL
.addr HIDE
.addr SHOW
.addr BOX
.addr MOVE
.addr BUTTONS
.addr POS
.addr INFO
.addr IOCTL
.addr IRQ
; Callback table, set by the kernel before INSTALL is called
CHIDE: jmp $0000 ; Hide the cursor
CSHOW: jmp $0000 ; Show the cursor
CMOVEX: jmp $0000 ; Move the cursor to X coord
CMOVEY: jmp $0000 ; Move the cursor to Y coord
;----------------------------------------------------------------------------
; Constants
SCREEN_HEIGHT = 200
SCREEN_WIDTH = 320
;----------------------------------------------------------------------------
; Global variables. The bounding box values are sorted so that they can be
; written with the least effort in the BOX routine, so don't reorder them.
.bss
Vars:
OldPotX: .res 1 ; Old hw counter values
OldPotY: .res 1
YPos: .res 2 ; Current mouse position, Y
XPos: .res 2 ; Current mouse position, X
YMax: .res 2 ; Y2 value of bounding box
XMax: .res 2 ; X2 value of bounding box
YMin: .res 2 ; Y1 value of bounding box
XMin: .res 2 ; X1 value of bounding box
OldValue: .res 1 ; Temp for MoveCheck routine
NewValue: .res 1 ; Temp for MoveCheck routine
; Default values for above variables
.rodata
.proc DefVars
.byte 0, 0 ; OldPotX/OldPotY
.word SCREEN_HEIGHT/2 ; YPos
.word SCREEN_WIDTH/2 ; XPos
.word SCREEN_HEIGHT ; YMax
.word SCREEN_WIDTH ; XMax
.word 0 ; YMin
.word 0 ; XMin
.endproc
.code
;----------------------------------------------------------------------------
; INSTALL routine. Is called after the driver is loaded into memory. If
; possible, check if the hardware is present.
; Must return an MOUSE_ERR_xx code in a/x.
INSTALL:
; Initialize variables. Just copy the default stuff over
ldx #.sizeof(DefVars)-1
@L1: lda DefVars,x
sta Vars,x
dex
bpl @L1
; Be sure the mouse cursor is invisible and at the default location. We
; need to do that here, because our mouse interrupt handler doesn't set the
; mouse position if it hasn't changed.
sei
jsr CHIDE
lda XPos
ldx XPos+1
jsr CMOVEX
lda YPos
ldx YPos+1
jsr CMOVEY
cli
; Done, return zero (= MOUSE_ERR_OK)
ldx #$00
txa
rts ; Run into UNINSTALL instead
;----------------------------------------------------------------------------
; UNINSTALL routine. Is called before the driver is removed from memory.
; No return code required (the driver is removed from memory on return).
UNINSTALL = HIDE ; Hide cursor on exit
;----------------------------------------------------------------------------
; HIDE routine. Is called to hide the mouse pointer. The mouse kernel manages
; a counter for calls to show/hide, and the driver entry point is only called
; if the mouse is currently visible and should get hidden. For most drivers,
; no special action is required besides hiding the mouse cursor.
; No return code required.
HIDE: sei
jsr CHIDE
cli
rts
;----------------------------------------------------------------------------
; SHOW routine. Is called to show the mouse pointer. The mouse kernel manages
; a counter for calls to show/hide, and the driver entry point is only called
; if the mouse is currently hidden and should become visible. For most drivers,
; no special action is required besides enabling the mouse cursor.
; No return code required.
SHOW: sei
jsr CSHOW
cli
rts
;----------------------------------------------------------------------------
; BOX: Set the mouse bounding box. The parameters are passed as they come from
; the C program, that is, maxy in a/x and the other parameters on the stack.
; The C wrapper will remove the parameters from the stack when the driver
; routine returns.
; No checks are done if the mouse is currently inside the box, this is the job
; of the caller. It is not necessary to validate the parameters, trust the
; caller and save some code here. No return code required.
BOX: ldy #5
sei
sta YMax
stx YMax+1
@L1: lda (sp),y
sta XMax,y
dey
bpl @L1
cli
rts
;----------------------------------------------------------------------------
; MOVE: Move the mouse to a new position. The position is passed as it comes
; from the C program, that is: X on the stack and Y in a/x. The C wrapper will
; remove the parameter from the stack on return.
; No checks are done if the new position is valid (within the bounding box or
; the screen). No return code required.
;
MOVE: sei ; No interrupts
sta YPos
stx YPos+1 ; New Y position
jsr CMOVEY ; Set it
ldy #$01
lda (sp),y
sta XPos+1
tax
dey
lda (sp),y
sta XPos ; New X position
jsr CMOVEX ; Move the cursor
cli ; Allow interrupts
rts
;----------------------------------------------------------------------------
; BUTTONS: Return the button mask in a/x.
BUTTONS:
lda #$7F
sei
sta CIA1_PRA
lda CIA1_PRB ; Read joystick #0
cli
ldx #0
and #$1F
eor #$1F
rts
;----------------------------------------------------------------------------
; POS: Return the mouse position in the MOUSE_POS struct pointed to by ptr1.
; No return code required.
POS: ldy #MOUSE_POS::XCOORD ; Structure offset
sei ; Disable interrupts
lda XPos ; Transfer the position
sta (ptr1),y
lda XPos+1
iny
sta (ptr1),y
lda YPos
iny
sta (ptr1),y
lda YPos+1
cli ; Enable interrupts
iny
sta (ptr1),y ; Store last byte
rts ; Done
;----------------------------------------------------------------------------
; INFO: Returns mouse position and current button mask in the MOUSE_INFO
; struct pointed to by ptr1. No return code required.
;
; We're cheating here to keep the code smaller: The first fields of the
; mouse_info struct are identical to the mouse_pos struct, so we will just
; call _mouse_pos to initialize the struct pointer and fill the position
; fields.
INFO: jsr POS
; Fill in the button state
jsr BUTTONS ; Will not touch ptr1
ldy #MOUSE_INFO::BUTTONS
sta (ptr1),y
rts
;----------------------------------------------------------------------------
; IOCTL: Driver defined entry point. The wrapper will pass a pointer to ioctl
; specific data in ptr1, and the ioctl code in A.
; Must return an error code in a/x.
;
IOCTL: lda #<MOUSE_ERR_INV_IOCTL ; We don't support ioclts for now
ldx #>MOUSE_ERR_INV_IOCTL
rts
;----------------------------------------------------------------------------
; IRQ: Irq handler entry point. Called as a subroutine but in IRQ context
; (so be careful).
;
IRQ: lda SID_ADConv1 ; Get mouse X movement
ldy OldPotX
jsr MoveCheck ; Calculate movement vector
sty OldPotX
; Skip processing if nothing has changed
bcc @SkipX
; Calculate the new X coordinate (--> a/y)
add XPos
tay ; Remember low byte
txa
adc XPos+1
tax
; Limit the X coordinate to the bounding box
cpy XMin
sbc XMin+1
bpl @L1
ldy XMin
ldx XMin+1
jmp @L2
@L1: txa
cpy XMax
sbc XMax+1
bmi @L2
ldy XMax
ldx XMax+1
@L2: sty XPos
stx XPos+1
; Move the mouse pointer to the new X pos
tya
jsr CMOVEX
; Calculate the Y movement vector
@SkipX: lda SID_ADConv2 ; Get mouse Y movement
ldy OldPotY
jsr MoveCheck ; Calculate movement
sty OldPotY
; Skip processing if nothing has changed
bcc @SkipY
; Calculate the new Y coordinate (--> a/y)
sta OldValue
lda YPos
sub OldValue
tay
stx OldValue
lda YPos+1
sbc OldValue
tax
; Limit the Y coordinate to the bounding box
cpy YMin
sbc YMin+1
bpl @L3
ldy YMin
ldx YMin+1
jmp @L4
@L3: txa
cpy YMax
sbc YMax+1
bmi @L4
ldy YMax
ldx YMax+1
@L4: sty YPos
stx YPos+1
; Move the mouse pointer to the new X pos
tya
jmp CMOVEY
; Done
@SkipY: rts
; --------------------------------------------------------------------------
;
; Move check routine, called for both coordinates.
;
; Entry: y = old value of pot register
; a = current value of pot register
; Exit: y = value to use for old value
; x/a = delta value for position
;
MoveCheck:
sty OldValue
sta NewValue
ldx #$00
sub OldValue ; a = mod64 (new - old)
and #%01111111
cmp #%01000000 ; if (a > 0)
bcs @L1 ;
lsr a ; a /= 2;
beq @L2 ; if (a != 0)
ldy NewValue ; y = NewValue
sec
rts ; return
@L1: ora #%11000000 ; else or in high order bits
cmp #$FF ; if (a != -1)
beq @L2
sec
ror a ; a /= 2
dex ; high byte = -1 (X = $FF)
ldy NewValue
sec
rts
@L2: txa ; A = $00
clc
rts

109
libsrc/c128/mcbdefault.s Normal file
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@ -0,0 +1,109 @@
;
; Default mouse callbacks for the C64
;
; Ullrich von Bassewitz, 2004-03-20
;
; All functions in this module should be interrupt safe, because they may
; be called from an interrupt handler
;
.export _mouse_def_callbacks
.include "mouse-kernel.inc"
.include "c128.inc"
.macpack generic
; Sprite definitions. The first value can be changed to adjust the number
; of the sprite used for the mouse.
MOUSE_SPR = 0 ; Sprite used for the mouse
MOUSE_SPR_MASK = $01 .shl MOUSE_SPR ; Positive mask
MOUSE_SPR_NMASK = .lobyte(.not MOUSE_SPR_MASK) ; Negative mask
VIC_SPR_X = (VIC_SPR0_X + 2*MOUSE_SPR) ; Sprite X register
VIC_SPR_Y = (VIC_SPR0_Y + 2*MOUSE_SPR) ; Sprite Y register
.code
; --------------------------------------------------------------------------
; Hide the mouse pointer. Always called with interrupts disabled.
.proc hide
lda #MOUSE_SPR_NMASK
and VIC_SPR_ENA
sta VIC_SPR_ENA
rts
.endproc
; --------------------------------------------------------------------------
; Show the mouse pointer. Always called with interrupts disabled.
.proc show
lda #MOUSE_SPR_MASK
ora VIC_SPR_ENA
sta VIC_SPR_ENA
rts
.endproc
; --------------------------------------------------------------------------
; Move the mouse pointer X position to the value in a/x. Always called with
; interrupts disabled.
.proc movex
; Add the X correction and set the low byte. This frees A.
add #24 ; X correction
sta VIC_SPR_X
; Set the high byte
txa
adc #0
bne @L1 ; Branch if high byte not zero
lda VIC_SPR_HI_X ; Get high X bits of all sprites
and #MOUSE_SPR_NMASK ; Clear high bit for sprite
sta VIC_SPR_HI_X
rts
@L1: lda VIC_SPR_HI_X ; Get high X bits of all sprites
ora #MOUSE_SPR_MASK ; Set high bit for sprite
sta VIC_SPR_HI_X
rts
.endproc
; --------------------------------------------------------------------------
; Move the mouse pointer Y position to the value in a/x. Always called with
; interrupts disabled.
.proc movey
clc
ldx PALFLAG
bne @L1
adc #50 ; FIXME: Should be NTSC, is PAL value
sta VIC_SPR_Y ; Set Y position
rts
@L1: adc #50 ; Add PAL correction
sta VIC_SPR_Y ; Set Y position
rts
.endproc
; --------------------------------------------------------------------------
; Callback structure
.rodata
_mouse_def_callbacks:
.addr hide
.addr show
.addr movex
.addr movey

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@ -1,495 +0,0 @@
;
; Ullrich von Bassewitz, 24.04.1999
;
; Routines for the 1351 proportional mouse. Parts of the code are from
; the Commodore 1351 mouse users guide.
;
.export _mouse_init, _mouse_done
.export _mouse_hide, _mouse_show
.export _mouse_box, _mouse_info
.export _mouse_move, _mouse_pos
.export _mouse_buttons, _mouse_info
.condes MouseIRQ, 2
.import popax, addysp1
.importzp ptr1, sp
.include "c128.inc"
.macpack generic
.code
; --------------------------------------------------------------------------
;
; Constants
;
SPRITE_HEIGHT = 21
SPRITE_WIDTH = 24
SCREEN_HEIGHT = 200
SCREEN_WIDTH = 320
XCORR = SPRITE_WIDTH
; --------------------------------------------------------------------------
;
; unsigned char __fastcall__ mouse_init (unsigned char type);
;
.proc _mouse_init
lda Initialized ; Already initialized?
bne AlreadyInitialized ; Jump if yes
; Initialize variables
ldx #0
lda #XCORR
sta XPos
stx XPos+1
stx YPos
stx YPos+1
stx OldPotX
stx OldPotY
stx XMin
stx XMin+1 ; XMin = 0
lda #50 ; ## FIXME: This is the PAL value
sta YCorr
sta YPos
stx YPos+1
sec
sbc #SPRITE_HEIGHT ; Sprite height in pixels
sta YMin
stx YMin+1 ; YMin = 29
lda #SCREEN_HEIGHT ; Vertical screen res
add YCorr ; Add correction factor
sta YMax
stx YMax+1
inx ; X = 1
stx Invisible ; Mouse *not* visible
lda #<(SCREEN_WIDTH + SPRITE_WIDTH)
sta XMax
stx XMax+1 ; XMax = 320 + sprite width
; Save the old init status and reset bit 0. This will disable the BASIC
; IRQ handler which will otherwise try to manage the mouse sprite on its
; own
lda INIT_STATUS
sta OldInitStatus
and #$FE
sta INIT_STATUS
; Mouse successfully initialized
lda #1
sta Initialized
rts
AlreadyInitialized:
lda #0 ; Error
rts
.endproc
; --------------------------------------------------------------------------
;
; void mouse_done (void);
;
_mouse_done:
lda Initialized ; Initialized?
beq mddone ; Jump if no
lda #0
sta Initialized ; Reset the initialized flag
lda OldInitStatus ; Load the old BASIC int bit
and #$01 ; Mask it
ora INIT_STATUS ; Restore the old state
sta INIT_STATUS
; Disable the mouse sprite
DisableSprite:
lda #$FE ; Clear bit for sprite #0
sei ; Disable interrupts
and VIC_SPR_ENA
sta VIC_SPR_ENA ; Disable sprite
cli ; Enable interrupts
mddone: rts
; --------------------------------------------------------------------------
;
; void mouse_hide (void);
;
.proc _mouse_hide
lda Invisible ; Get the flag
bne @L1 ; Jump if already invisible
jsr DisableSprite ; Disable the mouse sprite
@L1: inc Invisible ; Set the flag to invisible
rts
.endproc
; --------------------------------------------------------------------------
;
; void mouse_show (void);
;
.proc _mouse_show
lda Invisible ; Mouse invisible?
beq @L1 ; Jump if no
dec Invisible ; Set the flag
bne @L1 ; Jump if still invisible
sei ; Disable interrupts
jsr MoveSprite1 ; Move the sprite to it's position
lda VIC_SPR_ENA ; Get sprite enable register
ora #$01 ; Enable sprite #0
sta VIC_SPR_ENA ; Write back
cli ; Enable interrupts
@L1: rts
.endproc
; --------------------------------------------------------------------------
;
; void __fastcall__ mouse_box (int minx, int miny, int maxx, int maxy);
;
.proc _mouse_box
ldy #0 ; Stack offset
add YCorr ; Adjust the Y value
bcc @L1
inx
clc
@L1: sei ; Disable interrupts
sta YMax
stx YMax+1 ; maxy
lda (sp),y
adc #XCORR
sta XMax
iny
lda (sp),y
adc #$00
sta XMax+1 ; maxx
iny
lda (sp),y
add YCorr
sta YMin
iny
lda (sp),y
adc #$00
sta YMin+1 ; miny
iny
lda (sp),y
add #XCORR
sta XMin
iny
lda (sp),y
adc #$00
sta XMin+1 ; minx
cli ; Enable interrupts
jmp addysp1 ; Drop params, return
.endproc
; --------------------------------------------------------------------------
;
; void __fastcall__ mouse_pos (struct mouse_pos* pos);
; /* Return the current mouse position */
;
.proc _mouse_pos
sta ptr1
stx ptr1+1 ; Remember the argument pointer
ldy #0 ; Structure offset
sec ; Needed for the SBC later
sei ; Disable interrupts
lda XPos ; Transfer the position
sbc #XCORR
sta (ptr1),y
lda XPos+1
sbc #$00
iny
sta (ptr1),y
lda YPos
ldx YPos+1
cli ; Restore initial interrupt state
sub YCorr ; Apply the Y correction value
bcs @L1
dex
@L1: iny
sta (ptr1),y ; Store YPos
txa
iny
sta (ptr1),y
rts ; Done
.endproc
; --------------------------------------------------------------------------
;
; void __fastcall__ mouse_info (struct mouse_info* info);
; /* Return the state of the mouse buttons and the position of the mouse */
;
.proc _mouse_info
; We're cheating here to keep the code smaller: The first fields of the
; mouse_info struct are identical to the mouse_pos struct, so we will just
; call _mouse_pos to initialize the struct pointer and fill the position
; fields.
jsr _mouse_pos
; Fill in the button state
jsr _mouse_buttons ; Will not touch ptr1
ldy #4
sta (ptr1),y
rts
.endproc
; --------------------------------------------------------------------------
;
; void __fastcall__ mouse_move (int x, int y);
;
.proc _mouse_move
add YCorr ; Add Y coordinate correction
bcc @L1
inx
clc
@L1: sei
sta YPos
stx YPos+1
cli
jsr popax ; Get X
adc #XCORR ; Adjust X coordinate
bcc @L2
inx
@L2: sei
sta XPos
stx XPos+1 ; Set new position
jsr MoveSprite ; Move the sprite to the mouse pos
cli ; Enable interrupts
rts
.endproc
; --------------------------------------------------------------------------
;
; unsigned char mouse_buttons (void);
;
.proc _mouse_buttons
lda #$7F
sei
sta CIA1_PRA
lda CIA1_PRB ; Read joystick #0
cli
ldx #0
and #$1F
eor #$1F
rts
.endproc
; --------------------------------------------------------------------------
;
; Mouse interrupt handler
;
IRQDone:rts
MouseIRQ:
lda Initialized ; Mouse initialized?
beq IRQDone ; Jump if no
lda SID_ADConv1 ; Get mouse X movement
ldy OldPotX
jsr MoveCheck ; Calculate movement vector
sty OldPotX
; Calculate the new X coordinate (--> a/y)
add XPos
tay ; Remember low byte
txa
adc XPos+1
tax
; Limit the X coordinate to the bounding box
cpy XMin
sbc XMin+1
bpl @L1
ldy XMin
ldx XMin+1
jmp @L2
@L1: txa
cpy XMax
sbc XMax+1
bmi @L2
ldy XMax
ldx XMax+1
@L2: sty XPos
stx XPos+1
; Calculate the Y movement vector
lda SID_ADConv2 ; Get mouse Y movement
ldy OldPotY
jsr MoveCheck ; Calculate movement
sty OldPotY
; Calculate the new Y coordinate (--> a/y)
sta OldValue
lda YPos
sub OldValue
tay
stx OldValue
lda YPos+1
sbc OldValue
tax
cpy YMin
sbc YMin+1
bpl @L3
ldy YMin
ldx YMin+1
jmp @L4
@L3: txa
cpy YMax
sbc YMax+1
bmi @L4
ldy YMax
ldx YMax+1
@L4: sty YPos
stx YPos+1
; Move the mouse sprite to the current mouse position. Must be called
; with interrupts off. MoveSprite1 is an entry without checking.
MoveSprite:
lda Invisible ; Mouse visible?
bne Done ; Jump if no
; Set the high X bit
MoveSprite1:
lda VIC_SPR_HI_X ; Get high X bits of all sprites
and #$FE ; Clear bit for sprite #0
ldy XPos+1 ; Test Y position
beq @L5
ora #$01 ; Set high X bit
@L5: sta VIC_SPR_HI_X ; Set hi X sprite values
; Set the low X byte
lda XPos
sta VIC_SPR0_X ; Set low byte
; Set the Y position
ldy YPos+1 ; Negative or too large?
bne Done ; Jump if yes
lda YPos
sta VIC_SPR0_Y ; Set Y position
; Done
Done: rts
; --------------------------------------------------------------------------
;
; Move check routine, called for both coordinates.
;
; Entry: y = old value of pot register
; a = current value of pot register
; Exit: y = value to use for old value
; x/a = delta value for position
;
.proc MoveCheck
sty OldValue
sta NewValue
ldx #$00
sub OldValue ; a = mod64 (new - old)
and #%01111111
cmp #%01000000 ; if (a > 0)
bcs @L1 ;
lsr a ; a /= 2;
beq @L2 ; if (a != 0)
ldy NewValue ; y = NewValue
rts ; return
@L1: ora #%11000000 ; else or in high order bits
cmp #$FF ; if (a != -1)
beq @L2
sec
ror a ; a /= 2
dex ; high byte = -1 (X = $FF)
ldy NewValue
rts
@L2: txa ; A = $00
rts
.endproc
; --------------------------------------------------------------------------
; Data
.bss
Initialized: .res 1 ; True if mouse initialized
OldInitStatus: .res 1 ; Old IRQ flag value
OldValue: .res 1 ; Temp for MoveCheck routine
NewValue: .res 1 ; Temp for MoveCheck routine
YCorr: .res 1 ; Correction for Y coordinate
Invisible: .res 1 ; Is the mouse invisible?
OldPotX: .res 1 ; Old hw counter values
OldPotY: .res 1
XPos: .res 2 ; Current mouse position, X
YPos: .res 2 ; Current mouse position, Y
XMin: .res 2 ; X1 value of bounding box
YMin: .res 2 ; Y1 value of bounding box
XMax: .res 2 ; X2 value of bounding box
YMax: .res 2 ; Y2 value of bounding box

View File

@ -103,7 +103,7 @@ Requires: %{name} = %{version}
Copyright: Freeware Copyright: Freeware
Summary: Apple ][ specific libraries and headers for the cc65 compiler. Summary: Apple ][ specific libraries and headers for the cc65 compiler.
Group: Development/Languages Group: Development/Languages
%description apple2 %description apple2
This package contains the header files and libraries needed to write This package contains the header files and libraries needed to write
programs for the Apple ][ using the cc65 crosscompiler. programs for the Apple ][ using the cc65 crosscompiler.
@ -200,6 +200,7 @@ programs for the Commodore C128 using the cc65 crosscompiler.
%attr(644,root,root) /usr/lib/cc65/lib/c128.o %attr(644,root,root) /usr/lib/cc65/lib/c128.o
%attr(644,root,root) /usr/lib/cc65/emd/c128-*.emd %attr(644,root,root) /usr/lib/cc65/emd/c128-*.emd
%attr(644,root,root) /usr/lib/cc65/joy/c128-*.joy %attr(644,root,root) /usr/lib/cc65/joy/c128-*.joy
%attr(644,root,root) /usr/lib/cc65/mou/c128-*.mou
%attr(644,root,root) /usr/lib/cc65/ser/c128-*.ser %attr(644,root,root) /usr/lib/cc65/ser/c128-*.ser
%attr(644,root,root) /usr/lib/cc65/tgi/c128-*.tgi %attr(644,root,root) /usr/lib/cc65/tgi/c128-*.tgi
@ -291,7 +292,7 @@ This package contains the header files and libraries needed to write
programs for the Commodore PET-II (CBM600/700) family of computers using programs for the Commodore PET-II (CBM600/700) family of computers using
the cc65 crosscompiler. the cc65 crosscompiler.
%files cbm610 %files cbm610
%attr(644,root,root) /usr/lib/cc65/lib/cbm610.lib %attr(644,root,root) /usr/lib/cc65/lib/cbm610.lib
%attr(644,root,root) /usr/lib/cc65/lib/cbm610.o %attr(644,root,root) /usr/lib/cc65/lib/cbm610.o
%attr(644,root,root) /usr/lib/cc65/emd/cbm610-*.emd %attr(644,root,root) /usr/lib/cc65/emd/cbm610-*.emd