mirror of
https://github.com/A2osX/A2osX.git
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380 lines
7.4 KiB
Plaintext
380 lines
7.4 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BUILD
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LOMEM $A00
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INC 1
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AUTO 6
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*--------------------------------------
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SYS.BASL0 .EQ $800
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*--------------------------------------
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CORE.Run jsr CORE.TskMgrRun
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stx A2osX.RANDOM16
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jsr CORE.GetEvents
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txa
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eor KBD
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sta A2osX.RANDOM16+1
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bcs .4 CS=no event
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jsr CORE.DispatchEvents
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bcc .4 CC=All Events Dispatched
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>LDYAI TskMgr.Table Select PS0
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>STYA pPs
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lda #EvtMgr.Table
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sta pEvent
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.1 lda (pEvent)
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beq .3
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bmi .2 Ignore & Discard any timer event
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jsr CORE.DumpEvent
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.2 jsr CORE.DestroyEvent
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.3 lda pEvent
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clc
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adc #S.EVT
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sta pEvent
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lda EVTMGR.COUNT
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bne .1
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.4 lda A2osX.ASCREEN
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cmp #2 is SYS active?
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bne .6
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ldx SYS.CPULOADI
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lda SYS.CPULOADC,x
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sta SYS.BASL0+38
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dex
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bpl .5
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ldx #3
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.5 stx SYS.CPULOADI
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.6 bit OPENAPPLE
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bpl CORE.Run
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lda KBD
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bpl CORE.Run
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cmp #"1"
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bcc CORE.Run
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cmp #"5"
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bcs CORE.Run
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sta KBDSTROBE
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and #$0F
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cmp A2osX.ASCREEN Same as active screen...nothing to do
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beq CORE.Run
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tax
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lda A2osX.SCRNDEVS-1,x
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beq CORE.Run No device claimed this screen
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jsr K.GetDevByID.A x unmodified.....
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bcs CORE.Run ???
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stx A2osX.ASCREEN
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>STYA pDev
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ldx #DEVMGR.CONTROL
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jsr pDevJmp
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jmp CORE.Run
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*--------------------------------------
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CORE.DumpEvent ldy #S.EVT-1
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.1 >PUSHB (pEvent),y
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dey
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bpl .1
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>LDYAI .2
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jmp K.PrintF.YA
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.2 >CSTR "!Evt:F=%b,Dev=$%h,LO=$%h,HI=$%h,W1=$%H,W2=$%H\n"
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*--------------------------------------
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SYS.CPULOADI .BS 1
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SYS.CPULOADC .AS "|/-\"
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*--------------------------------------
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CORE.TskMgrRun >LDYAI TskMgr.Table+S.PS skip PS 0
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>STYA pPs
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lda TskMgr.Count
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sta TskMgr.Idx
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.1 dec TskMgr.Idx skip PS 0
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beq .8
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lda (pPs) get S.PS.F
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bit #S.PS.F.INUSE In use ?
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beq .7
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bit #S.PS.F.HOLD Waiting for Another Task to Terminate?
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beq .2
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ldy #S.PS.CPID
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lda (pPs),y
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jsr K.GetPSByID.A
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bcc .7 yes, running....
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lda (pPs) get S.PS.F
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and #$FF^S.PS.F.HOLD unmark as HOLD
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sta (pPs)
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.2 jsr PS.Select
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lda (pPS)
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bit #S.PS.F.INIT
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bne .30
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bit #S.PS.F.SLEEP Is this PS sleeping?
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beq .3 no, call TSKMGR.RUN
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jsr CORE.PSWakeUp
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bra .4
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.30 and #$FF^S.PS.F.INIT unmark as INIT
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sta (pPS)
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ldx #TSKMGR.INIT
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.HS 2C BIT abs
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.3 ldx #TSKMGR.RUN
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.31 jsr pCodeJmp Call INIT/RUN function
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.4 bcc .7 INIT/RUN said CS=QUIT?
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pha save RC
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ldy #S.PS.PPID Notify Parent Process for exit code...
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lda (pPs),y
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jsr K.GetPSByID.A will set ZPPtr1 if success
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bcs .5 parent is dead.....skipping...
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lda (ZPPtr1) Parent PS is HOLD?
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bit #S.PS.F.HOLD
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beq .5 no...
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eor #S.PS.F.HOLD yes, release hold...
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sta (ZPPtr1)
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pla ...probably waiting for this PS to terminate....
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ldy #S.PS.RC give it RC
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sta (ZPPtr1),y
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.HS B0 BCS
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.5 pla
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.6 ldx #TSKMGR.QUIT yes, quit this process
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jsr pCodeJmp Call QUIT function
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ldy #S.PS.PID
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lda (pPs),y
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jsr PS.Free.A
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.7 lda pPs
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clc
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adc #S.PS
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sta pPs
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bcc .1
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inc pPs+1
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bcs .1 Always
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.8 clc
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rts
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*--------------------------------------
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CORE.PSWakeUp and #$FF^S.PS.F.SLEEP unmark as SLEEP
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sta (pPS)
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ldy #S.PS.PC
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lda (pPs),y
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sec Advance PC by one as it was saved by a JSR
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adc pCode setup by PS.Select
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sta .1+1
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iny
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lda (pPs),y
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adc pCode+1
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sta .1+2
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.1 jmp $FFFF
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*--------------------------------------
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* CORE.DispatchEvents
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* IN:
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* OUT:
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* CS: Not Dispatched
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* CC: Event Cleared
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*--------------------------------------
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CORE.DispatchEvents
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>LDYAI TskMgr.Table+S.PS
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>STYA pPs
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lda TskMgr.Count Number of actual processes...
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sta TskMgr.Idx ...to give event list
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.1 dec TskMgr.Idx skip PS 0
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beq .9
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lda (pPs) get S.PS.F
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bpl .4
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* bit #S.PS.F.INUSE In use ?
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* beq .4
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bit #S.PS.F.INIT+S.PS.F.HOLD Init or Waiting for Another Task to Terminate?
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bne .4
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bit #S.PS.F.EVENT Accept Events ?
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beq .4
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jsr PS.Select
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lda #EvtMgr.Table
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sta pEvent Select first event in list
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lda EVTMGR.COUNT
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sta TSKMGR.EVENTCNT
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.2 lda (pEvent) Empty event, select next
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beq .3
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lda (pCode)
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cmp #H.BIN.HEADER.BIN65
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bne *
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ldx #TSKMGR.DOEVENT
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jsr pCodeJmp Call DOEVENT function
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bcs .3 not for this PS, try next event in list
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jsr CORE.DestroyEvent this PS handled the EVT, destroy it...
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lda EVTMGR.COUNT
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beq .8 no more event, exit
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.3 dec TSKMGR.EVENTCNT
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beq .4 all EVT submitted to this PS, try other PS
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lda pEvent try next EVT to this PS
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clc
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adc #S.EVT
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sta pEvent
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bra .2
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.4 lda pPs go to next PS in PS list
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clc
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adc #S.PS
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sta pPs
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bcc .1
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inc pPs+1
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bne .1 always
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.8 clc
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rts
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.9 sec
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rts
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*--------------------------------------
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CORE.TskMgrQuit clc
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rts
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*--------------------------------------
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TskMgr.Idx .BS 1
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TSKMGR.EVENTCNT .BS 1
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*--------------------------------------
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* CORE.GetEvents :
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* IN :
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* OUT :
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* CS = no event, A = ERROR
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* CC * event in YA
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* (pEvent)
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*--------------------------------------
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CORE.GetEvents lda #EvtMgr.Table
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sta pEvent point to start of event list
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stz EvtMgr.Count reset Size
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lda K.IrkMgr.VBL do we have IRQ enabled for VBL ?
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bpl .10 no, regular poll
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lda K.IrkMgr.VBLINT
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beq .3 no
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dec K.IrkMgr.VBLINT
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bra .11
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.10 lda VBL get VLINE status
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tax
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eor EvtMgr.VBLState
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bpl .3 no change,no tick
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txa
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sta EvtMgr.VBLState save new
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bpl .3 Up2down transition,no tick
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.11 inc A2osX.TIMER16
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bne .1
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inc A2osX.TIMER16+1
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.1 dec EvtMgr.HZ.CNT
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bne .3 not yet 100ms
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ldx A2osX.HZ
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stx EvtMgr.HZ.CNT
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lda #S.EVT.F.T10TH
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dec EvtMgr.10TH.CNT
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bne .2
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ldx #10
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stx EvtMgr.10TH.CNT
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ora #S.EVT.F.T1SEC
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.2 sta (pEvent)
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jsr CORE.GetEvents.Add
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.3
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sec
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lda EvtMgr.Count if 0, exit with CS (from cmp), and A=0 "no event"
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beq .9
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.8 clc
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.9 rts
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*--------------------------------------
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CORE.GetEvents.Add
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inc EvtMgr.Count Add one event to Queue
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lda pEvent
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clc
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adc #S.EVT
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sta pEvent
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rts if CS, EVT queue full!!! ($100)
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*--------------------------------------
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CORE.DestroyEvent
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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 K.FreeMem.A
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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 K.FreeMem.A
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.2 lda #0
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sta (pEvent)
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dec EvtMgr.Count
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.9 rts
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*--------------------------------------
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MAN
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SAVE /A2OSX.SRC/SYS/KERNEL.S.CORE
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LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM
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