A2osX/SYS/KERNEL.S.EVT.txt

PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
				.LIST OFF
*--------------------------------------
* GETEVENT :
*  IN :
*  OUT : 
*   CS = no event, A = ERROR
*   CC * event in YA
*   (pEvent)
*--------------------------------------
S.GetEvents		stz	pEvent
				stz EVTMGR.COUNT
				
				lda VBL					get VLINE status
				tax
				eor EVTMGR.VBLSTATE			
				bpl S.GetEvents.DEV		no change,no tick
				txa
				sta EVTMGR.VBLSTATE		save new
				bpl S.GetEvents.DEV		Up2down transition,no tick
				
*				sta PDLTRIG				clr VBL (IIc)
*				lda RDIOUDIS			clr VBL (IIc)
				
				inc A2osX.TIMER16
				bne .1
				inc A2osX.TIMER16+1

.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
				
				ldx #10
				stx EVTMGR.10TH.CNT

				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
				and #S.DEV.F.EVENT
				beq .2					EVENT enabled ?
				
				lda (pDev)
				cmp #H.BIN.HEADER.DRV65
				bne *
				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
				rts
*--------------------------------------
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
				dec A2osX.RANDOM16+1
.99				sec						no event
				rts					
*--------------------------------------
S.DestroyEvent	lda (pEvent)
				beq .9
			
				bit #S.EVT.F.hMEM1
				beq .1
				
				pha
				ldy #S.EVT.DATALO
				lda (pEvent),y
				jsr S.FreeMemA
				pla
				
.1				bit #S.EVT.F.hMEM2
				beq .2
				
				ldy #S.EVT.DATAHI
				lda (pEvent),y
				jsr S.FreeMemA
				
.2				lda #0
				sta (pEvent)
				dec EVTMGR.COUNT
.9				rts
*--------------------------------------
EVTMGR.VBLSTATE	.BS 1
EVTMGR.10TH.CNT	.BS 1
EVTMGR.HZ.CNT	.BS 1
EVTMGR.COUNT	.BS 1
EVTMGR.SIZE		.BS 1
*--------------------------------------
MAN
SAVE SYS/KERNEL.S.EVT
LOAD SYS/KERNEL.S
ASM