A2osX/SYS/KERNEL.S.EVT.txt

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PR#3
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PREFIX /A2OSX.SRC
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NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* GETEVENT :
* IN :
* OUT :
* CS = no event, A = ERROR
* CC * event in YA
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* (pEvent)
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*--------------------------------------
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S.GetEvents stz pEvent
stz EVTMGR.COUNT
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lda VBL get VLINE status
tax
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eor EVTMGR.VBLSTATE
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bpl S.GetEvents.DEV no change,no tick
txa
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sta EVTMGR.VBLSTATE save new
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bpl S.GetEvents.DEV Up2down transition,no tick
* sta PDLTRIG clr VBL (IIc)
* lda RDIOUDIS clr VBL (IIc)
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inc A2osX.TIMER16
bne .1
inc A2osX.TIMER16+1
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.1 dec EVTMGR.HZ.CNT
bne S.GetEvents.DEV not yet 100ms
ldx A2osX.HZ
stx EVTMGR.HZ.CNT
lda #S.EVT.F.T10TH
dec EVTMGR.10TH.CNT
bne .2
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ldx #10
stx EVTMGR.10TH.CNT
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ora #S.EVT.F.T1SEC
.2 sta (pEvent)
lda pEvent
clc
adc #S.EVT
sta pEvent
inc EVTMGR.COUNT
S.GetEvents.DEV >LDYAI DevMgr.Table
>STYA pDev
stz DevMgr.DevID
.1 ldy #S.DEV.F
lda (pDev),y get S.DEV.F
bit #S.DEV.F.EVENT
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beq .2 EVENT enabled ?
lda (pDev)
cmp #H.BIN.HEADER.DRV65
bne *
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ldx #DEVMGR.GETEVENT
jsr pDevJmp Call DRV GetEvent function
bcs .2 no event
inc EVTMGR.COUNT
ldy #S.EVT.hDEV
lda DevMgr.DevID
sta (pEvent),y
lda pEvent
adc #S.EVT cc
sta pEvent
bcs .8 Event Q is full!
.2 lda pDev
clc
adc #S.DEV.SIZE
sta pDev
bcc .3
inc pDev+1
.3 lda DevMgr.DevID
inc DevMgr.DevID
cmp DevMgr.LastDevID
bne .1
.8 lda EVTMGR.COUNT
sta EVTMGR.SIZE
beq .9
clc
rts
.9 sec error code=0,CS=no event
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rts
*--------------------------------------
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S.GetKeyboardEvent
lda KBD
bpl .9
sta KBDSTROBE
and #$7F
ldy #S.EVT.DATA
sta (pEvent),y
iny
lda OPENAPPLE
asl
lda SOLIDAPPLE
ror
and #$C0
sta (pEvent),y
lda #S.EVT.F.KEY
sta (pEvent)
clc
rts
.9 inc A2osX.RANDOM16
bne .99
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dec A2osX.RANDOM16+1
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.99 sec no event
rts
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*--------------------------------------
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S.DestroyEvent lda (pEvent)
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beq .9
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bit #S.EVT.F.hMEM1
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beq .1
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pha
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ldy #S.EVT.DATALO
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lda (pEvent),y
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jsr S.FreeMemA
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pla
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.1 bit #S.EVT.F.hMEM2
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beq .2
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ldy #S.EVT.DATAHI
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lda (pEvent),y
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jsr S.FreeMemA
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.2 lda #0
sta (pEvent)
dec EVTMGR.COUNT
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.9 rts
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*--------------------------------------
EVTMGR.VBLSTATE .BS 1
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EVTMGR.10TH.CNT .BS 1
EVTMGR.HZ.CNT .BS 1
EVTMGR.COUNT .BS 1
EVTMGR.SIZE .BS 1
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*--------------------------------------
MAN
SAVE SYS/KERNEL.S.EVT
LOAD SYS/KERNEL.S
ASM