mirror of
https://github.com/cc65/cc65.git
synced 2024-06-15 17:30:06 +00:00
Changed the mouse API: Introduced a new flag byte that contains information
about the driver, the mouse kernel needs to know. Current supported: Two flags to enable interrupts before or after calling the driver INSTALL routine. git-svn-id: svn://svn.cc65.org/cc65/trunk@3741 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
parent
b6cb833560
commit
4b8d90d2de
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@ -2,11 +2,11 @@
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;/* */
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;/* mouse-kernel.inc */
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;/* */
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;/* Mouse API */
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;/* Mouse API */
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;/* */
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;/* */
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;/* */
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;/* (C) 2003-2004 Ullrich von Bassewitz */
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;/* (C) 2003-2006 Ullrich von Bassewitz */
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;/* Römerstraße 52 */
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;/* D-70794 Filderstadt */
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;/* EMail: uz@cc65.org */
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@ -69,6 +69,7 @@
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IOCTL .addr
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IRQ .addr
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.endstruct
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FLAGS .byte ; Mouse driver flags
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CALLBACKS .struct ; Jump instructions
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.byte ; JMP opcode
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CHIDE .addr ; Jump address
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@ -94,7 +95,16 @@
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;------------------------------------------------------------------------------
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; The mouse API version, stored in MOUSE_HDR::VERSION
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MOUSE_API_VERSION = $00
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MOUSE_API_VERSION = $01
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;------------------------------------------------------------------------------
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; Bitmapped mouse driver flags, stored in MOUSE_HDR::FLAGS.
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; Note: If neither of MOUSE_FLAG_XXX_IRQ is set, no interrupts are supplied
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; to the driver. If one of the bits is set, the interrupt vector MUST be
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; valid.
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MOUSE_FLAG_EARLY_IRQ = $40 ; Enable IRQ *before* calling INSTALL
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MOUSE_FLAG_LATE_IRQ = $80 ; Enable IRQ *after* calling INSTALL
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;------------------------------------------------------------------------------
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; Mouse button definitions
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@ -46,6 +46,9 @@ status := $0778
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.addr IOCTL
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.addr IRQ
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; Mouse driver flags
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.byte MOUSE_FLAG_EARLY_IRQ
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; Callback table, set by the kernel before INSTALL is called
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CHIDE: jmp $0000 ; Hide the cursor
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CSHOW: jmp $0000 ; Show the cursor
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@ -55,10 +58,10 @@ CMOVEY: jmp $0000 ; Move the cursor to Y coord
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; ------------------------------------------------------------------------
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.bss
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slot: .res 1
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visible:.res 1
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; ------------------------------------------------------------------------
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.rodata
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@ -78,7 +81,7 @@ size = * - values
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; ------------------------------------------------------------------------
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.data
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info: .word 279 / 2 ; MOUSE_INFO::MOUSE_POS::XCOORD
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.word 191 / 2 ; MOUSE_INFO::MOUSE_POS::YCOORD
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.byte %00000000 ; MOUSE_INFO::BUTTONS
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@ -95,7 +98,7 @@ xparam: ldx #$FF ; Patched at runtime
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yparam: ldy #$FF ; Patched at runtime
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jump: jmp $FFFF ; Patched at runtime
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; ------------------------------------------------------------------------
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.code
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@ -127,13 +130,13 @@ next: inc ptr1+1
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bne next
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dex
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bpl :-
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; Get and patch firmware address hibyte
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lda ptr1+1
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sta lookup+2
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sta xparam+1
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sta jump+2
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; Convert to and save slot number
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and #$0F
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sta slot
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@ -158,7 +161,7 @@ next: inc ptr1+1
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ldx #SETMOUSE
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jsr firmware
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; Set initial mouse clamps
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; Set initial mouse clamps
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lda #<279
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ldx #>279
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sta pos2_lo
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@ -206,7 +209,7 @@ UNINSTALL:
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; Hide cursor
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sei
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jsr CHIDE
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; Turn mouse off
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lda #%00000000
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ldx #SETMOUSE
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@ -252,7 +255,7 @@ BOX:
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ldx #$01 ; Set y clamps
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ldy #$00 ; Start at top of stack
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jsr :+
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ldx #$00 ; Set x clamps
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ldy #$00 ; Start at top of stack
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@ -307,7 +310,7 @@ MOVE:
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; Update cursor
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jsr update
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ldx #POSMOUSE
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bne common ; Branch always
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@ -345,7 +348,7 @@ IOCTL:
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lda #<MOUSE_ERR_INV_IOCTL
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ldx #>MOUSE_ERR_INV_IOCTL
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rts
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; IRQ: Called from the builtin runtime IRQ handler as a subroutine. All
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; registers are already saved, no parameters are passed, but the carry flag
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; is clear on entry. The routine must return with carry set if the interrupt
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@ -365,7 +368,7 @@ IRQ:
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ldy slot
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lda status,y
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tax ; Save status
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; Extract button down values
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asl ; C = Button 0 is currently down
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and #%00100000 ; !Z = Button 1 is currently down
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@ -376,7 +379,7 @@ IRQ:
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: bcc :+
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ora #MOUSE_BTN_LEFT
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: sta info + MOUSE_INFO::BUTTONS
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; Check for mouse movement
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txa ; Restore status
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and #%00100000 ; X or Y changed since last READMOUSE
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@ -384,7 +387,7 @@ IRQ:
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; Remove the cursor at the old position
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update: jsr CHIDE
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; Get and set the new X position
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ldy slot
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lda pos1_lo,y
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@ -392,7 +395,7 @@ update: jsr CHIDE
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sta info + MOUSE_POS::XCOORD
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stx info + MOUSE_POS::XCOORD+1
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jsr CMOVEX
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; Get and set the new Y position
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ldy slot
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lda pos2_lo,y
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@ -37,6 +37,10 @@ HEADER:
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.addr IOCTL
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.addr IRQ
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; Mouse driver flags
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.byte MOUSE_FLAG_LATE_IRQ
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; Callback table, set by the kernel before INSTALL is called
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CHIDE: jmp $0000 ; Hide the cursor
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@ -36,6 +36,10 @@ HEADER:
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.addr IOCTL
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.addr IRQ
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; Mouse driver flags
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.byte MOUSE_FLAG_LATE_IRQ
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; Callback table, set by the kernel before INSTALL is called
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CHIDE: jmp $0000 ; Hide the cursor
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@ -37,6 +37,10 @@ HEADER:
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.addr IOCTL
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.addr IRQ
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; Mouse driver flags
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.byte MOUSE_FLAG_LATE_IRQ
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; Callback table, set by the kernel before INSTALL is called
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CHIDE: jmp $0000 ; Hide the cursor
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@ -357,7 +361,7 @@ IRQ: lda SID_ADConv1 ; Get mouse X movement
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; Move the mouse pointer to the new X pos
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tya
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jsr CMOVEY
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jsr CMOVEY
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; Done
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@ -36,6 +36,10 @@ HEADER:
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.addr IOCTL
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.addr IRQ
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; Mouse driver flags
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.byte MOUSE_FLAG_LATE_IRQ
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; Callback table, set by the kernel before INSTALL is called
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CHIDE: jmp $0000 ; Hide the cursor
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@ -35,6 +35,7 @@ mouse_pos: jmp return0
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mouse_info: jmp return0
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mouse_ioctl: jmp return0
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mouse_irq: .byte $60, $00, $00 ; RTS plus two dummy bytes
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mouse_flags: .byte $00
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; Driver header signature
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.rodata
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@ -77,6 +78,12 @@ _mouse_install:
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cpy #(MOUSE_HDR::JUMPTAB + .sizeof(MOUSE_HDR::JUMPTAB))
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bne @L1
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; Copy the flags byte. It is located directly behind the jump vectors, so Y
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; is already correct when we come here. To save code, we use copyjv - crude
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; but effective.
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jsr copyjv
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; Copy the callback vectors into the driver space
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jsr popsreg
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@ -94,23 +101,34 @@ _mouse_install:
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; Install the IRQ vector if the driver needs it
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lda mouse_irq+2 ; Check high byte of IRQ vector
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beq @L3 ; Jump if vector invalid
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lda #$4C ; Jump opcode
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sta mouse_irq ; Activate IRQ routine
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bit mouse_flags ; Test MOUSE_FLAG_EARLY_IRQ
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bvc @L3 ; Jump if no interrupts at this time
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jsr install_irq ; Activate IRQ routine
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; Call driver install routine and check for errors
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@L3: jsr mouse_install
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tay ; Test error code
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beq @L4 ; Jump if no error
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bne uninstall_irq ; Jump on error
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; Uninstall IRQ vector if install routine had errors. A/X contains the error
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; code from mouse_install, so don't use it.
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; No errors on INSTALL. If the driver needs late IRQs, enable them now. Be
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; careful not to use A/X since these registers contain the error code from
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; INSTALL.
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bit mouse_flags ; Test MOUSE_FLAG_LATE_IRQ
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bpl Exit ; Jump if vector not needed
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install_irq:
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ldy #$4C ; Jump opcode
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sty mouse_irq ; Activate IRQ routine
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Exit: rts
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; Uninstall IRQ vector if install routine had errors. A/X may contain the
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; error code from mouse_install, so don't use it.
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uninstall_irq:
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ldy #$60 ; RTS opcode
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sty mouse_irq ; Disable IRQ entry point
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@L4: rts
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rts
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; Driver signature invalid. One word is still on the stack
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@ -141,9 +159,7 @@ copycb: lda (sreg),y
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; /* Uninstall the currently loaded driver. Returns an error code. */
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_mouse_uninstall:
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lda #$60 ; RTS opcode
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sta mouse_irq ; Disable IRQ entry point
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jsr uninstall_irq ; Disable driver interrupts
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jsr mouse_uninstall ; Call driver routine
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mouse_clear_ptr: ; External entry point
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