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Add the irq entry point

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3280 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2004-11-06 13:27:38 +00:00
parent 16c81eb942
commit dc781be7f9
7 changed files with 127 additions and 145 deletions
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193
libsrc/c64/c64-hitjoy.s
View File

@ -30,16 +30,17 @@
.byte $04 ; JOY_LEFT
.byte $08 ; JOY_RIGHT
.byte $10 ; JOY_FIRE
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word DEINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr IRQ
; ------------------------------------------------------------------------
; Constants
@ -64,124 +65,104 @@ temp4: .byte 0
;
INSTALL:
sei
lda $0314
sta irqjmp+1
lda $0315
sta irqjmp+2
lda #<pollirq
sta $0314
lda #>pollirq
sta $0315
cli
lda #<JOY_ERR_OK
ldx #>JOY_ERR_OK
rts
; rts ; Run into UNINSTALL instead
; ------------------------------------------------------------------------
; DEINSTALL routine. Is called before the driver is removed from memory.
; UNINSTALL routine. Is called before the driver is removed from memory.
; Can do cleanup or whatever. Must not return anything.
;
DEINSTALL:
sei
lda irqjmp+1
sta $0314
lda irqjmp+2
sta $0315
cli
UNINSTALL:
rts
; ------------------------------------------------------------------------
; we must use an irq here since we need timers
; which otherwhise would conflict with system-irq
pollirq:
; cia 2 setup
; IRQ entry point. Is called from the C layer as a subroutine in the
; interrupt.
ldy #$00 ; port b direction
sty $dd03 ; => input
IRQ: ; cia 2 setup
sty $dd05 ; cia2 timer a highbyte
sty $dc05 ; cia1 timer a highbyte
iny
sty $dd04 ; cia2 timer a lowbyte
sty $dc04 ; cia1 timer a lowbyte
ldy #$00 ; port b direction
sty $dd03 ; => input
lda #%00010001
sta $dd0e ; control register a
; timer: start
; continous
; forced load
; serial port: input
sty $dd05 ; cia2 timer a highbyte
sty $dc05 ; cia1 timer a highbyte
iny
sty $dd04 ; cia2 timer a lowbyte
sty $dc04 ; cia1 timer a lowbyte
; cia 1 setup
lda #%01010001
sta $dc0e ; control register a
; timer: start
; continous
; forced load
; serial port: output
lda #%00010001
sta $dd0e ; control register a
; timer: start
; continous
; forced load
; serial port: input
; cia 1 setup
lda #%01010001
sta $dc0e ; control register a
; timer: start
; continous
; forced load
; serial port: output
; read directions 3
lda $dd01 ;read cia 2 port b
and #$0f
sta temp3
; read directions 3
lda $dd01 ;read cia 2 port b
and #$0f
sta temp3
; read button 3
lda $dd02 ;cia 2 port a
and #%11111011 ;data direction
sta $dd02 ;=> bit 2 input
; read button 3
lda $dd02 ;cia 2 port a
and #%11111011 ;data direction
sta $dd02 ;=> bit 2 input
lda $dd00 ;read cia 2 p.A
and #%00000100 ;check bit 2
asl a
asl a
ora temp3
sta temp3
lda $dd00 ;read cia 2 p.A
and #%00000100 ;check bit 2
asl a
asl a
ora temp3
sta temp3
; read directions 4
lda $dd01 ;read cia 2 port b
lsr a
lsr a
lsr a
lsr a
sta temp4
; read directions 4
lda $dd01 ;read cia 2 port b
lsr a
lsr a
lsr a
lsr a
sta temp4
; read button 4
ldx #$ff ;serial data register
stx $dc0c;=> writing $ff causes
;cia to output some
;count signals at cnt1
; read button 4
ldx #$ff ;serial data register
stx $dc0c ;=> writing $ff causes
;cia to output some
;count signals at cnt1
ldx $dd0c ;read cia 2 serial in
beq fire ;button press if zero
ldx $dd0c ;read cia 2 serial in
beq fire ;button press if zero
lda temp4
ora #%00010000
sta temp4
lda temp4
ora #%00010000
sta temp4
fire:
; Default Value: $40/64 on PAL
; $42/66 on NTSC
lda #$41
sta $dc05
; Default Value: $25/37 on PAL
; $95/149 on NTSC
lda #0
sta $dc04
; Default Value: $40/64 on PAL
; $42/66 on NTSC
lda #$41
sta $dc05
; Default Value: $25/37 on PAL
; $95/149 on NTSC
lda #0
sta $dc04
irqjmp: jmp $dead
rts
; ------------------------------------------------------------------------
; COUNT: Return the total number of available joysticks in a/x.
;
COUNT:
lda #<JOY_COUNT
COUNT: lda #<JOY_COUNT
ldx #>JOY_COUNT
rts
@ -189,13 +170,12 @@ COUNT:
; READ: Read a particular joystick passed in A.
;
READ:
tax ; Joystick number into X
READ: tax ; Joystick number into X
bne joy2
; Read joystick 1
joy1:
lda #$7F
; Read joystick 1
joy1: lda #$7F
sei
sta CIA1_PRA
lda CIA1_PRB
@ -204,9 +184,9 @@ joy1:
eor #$1F
rts
; Read joystick 2
joy2:
dex
; Read joystick 2
joy2: dex
bne joy3
; ldx #0
@ -223,20 +203,17 @@ joy2:
; Read joystick 3
joy3:
dex
bne joy4
joy3: dex
bne joy4
lda temp3
lda temp3
eor #$1F
ldx #0
rts
; Read joystick 4
joy4:
lda temp4
joy4: lda temp4
eor #$1F
ldx #0
ldx #0
rts

24
libsrc/c64/c64-numpad.s
View File

@ -32,16 +32,17 @@
.byte $20 ; JOY_LEFT "4"
.byte $08 ; JOY_RIGHT "6"
.byte $04 ; JOY_FIRE "5" ENTER
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants
@ -63,13 +64,12 @@ JOY_COUNT = 1 ; Number of joysticks we support
;
INSTALL:
lda VIC_CLK_128
cmp #$FF
bne @C128
lda #JOY_ERR_NO_DEVICE
.byte $2C
@C128: lda #JOY_ERR_OK
ldx #0
lda #JOY_ERR_OK ; Assume we have a joystick
ldx VIC_CLK_128 ; Test for a C128
cpx #$FF
bne @C128 ; Jump if we have one
lda #JOY_ERR_NO_DEVICE ; No C128 -> no numpad
@C128: ldx #0 ; Set high byte
; rts ; Run into UNINSTALL instead

11
libsrc/c64/c64-ptvjoy.s
View File

@ -30,16 +30,17 @@
.byte $04 ; JOY_LEFT
.byte $08 ; JOY_RIGHT
.byte $10 ; JOY_FIRE
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants

13
libsrc/cbm510/cbm510-stdjoy.s
View File

@ -12,7 +12,7 @@
.include "joy-error.inc"
.include "cbm510.inc"
.include "extzp.inc"
.macpack generic
@ -33,16 +33,17 @@
.byte $04 ; JOY_LEFT
.byte $08 ; JOY_RIGHT
.byte $10 ; JOY_FIRE
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants

9
libsrc/nes/nes-stdjoy.s
View File

@ -36,10 +36,11 @@
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READJOY
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READJOY
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants

11
libsrc/plus4/plus4-stdjoy.s
View File

@ -31,16 +31,17 @@
.byte $04 ; JOY_LEFT
.byte $08 ; JOY_RIGHT
.byte $10 ; JOY_FIRE
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants

11
libsrc/vic20/vic20-stdjoy.s
View File

@ -32,16 +32,17 @@
.byte $08 ; JOY_LEFT
.byte $80 ; JOY_RIGHT
.byte $10 ; JOY_FIRE
.byte $00 ; Future expansion
.byte $00 ; JOY_FIRE2 unavailable
.byte $00 ; Future expansion
.byte $00 ; Future expansion
; Jump table.
.word INSTALL
.word UNINSTALL
.word COUNT
.word READ
.addr INSTALL
.addr UNINSTALL
.addr COUNT
.addr READ
.addr 0 ; IRQ entry unused
; ------------------------------------------------------------------------
; Constants