mirror of
https://github.com/A2osX/A2osX.git
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249 lines
5.2 KiB
Plaintext
249 lines
5.2 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BUILD
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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.OP 65C02
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*--------------------------------------
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* S.DevMgrInit
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*--------------------------------------
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S.DevMgrInit ldx #S.DEV.SIZE*K.DEV.MAX
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.1 stz DEVMGR.TABLE-1,x
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dex
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bne .1
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ldy #5
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.2 lda DEVMGR.TABLE.NUL,y
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sta DEVMGR.TABLE,y
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dey
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bpl .2
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ldy #5
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ldx #S.DEV.SIZE+5
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.3 lda DEVMGR.TABLE.KBD,y
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sta DEVMGR.TABLE,x
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dex
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dey
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bpl .3
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lda #1 reserve #0=NUL, #1=KBD
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sta DEVMGR.LASTID
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clc
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rts
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*--------------------------------------
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* S.GetDevByIDA
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* IN:
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* A = DevID
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* OUT:
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* CC = OK, CS = ERROR
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* Y,A = devslot
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* X Unmodified
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*--------------------------------------
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S.GetDevByIDA sta ZPQuickPtr1
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lda #K.DEV.MAX
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sta ZPQuickPtr1+1
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>LDYAI DEVMGR.TABLE
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>STYA ZPQuickPtr2
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.1 lda (ZPQuickPtr2) get S.DEV.F
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bpl .3 In use ?
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ldy #S.DEV.ID
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lda (ZPQuickPtr2),y
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cmp ZPQuickPtr1
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beq .8
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.2 lda ZPQuickPtr2
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clc
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adc #S.DEV.SIZE
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sta ZPQuickPtr2
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bcc .3
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inc ZPQuickPtr2+1
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.3 dec ZPQuickPtr1+1
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bne .1
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sec
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rts
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.8 >LDYA ZPQuickPtr2
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clc
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rts
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*--------------------------------------
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* GetDevIDByNameA
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* IN:
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* A = hPStr
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* OUT:
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* CC = OK, CS = ERROR
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* A = DEVID
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* set DEVMGR.DEVPTR to devslot
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*--------------------------------------
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S.GetDevByNameA jsr S.GetMemPtrA
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>STYA ZPQuickPtr1
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>LDYAI DEVMGR.TABLE
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>STYA DEVMGR.DEVPTR
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ldx #K.DEV.MAX
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.1 lda (DEVMGR.DEVPTR) get S.DEV.F
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bpl .3 empty ?
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lda DEVMGR.DEVPTR
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clc
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adc #S.DEV.NAME
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sta ZPQuickPtr2
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lda DEVMGR.DEVPTR+1
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adc /S.DEV.NAME
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sta ZPQuickPtr2+1
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lda (ZPQuickPtr1)
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cmp (ZPQuickPtr2)
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bne .3
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tay
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.2 lda (ZPQuickPtr1),y
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cmp (ZPQuickPtr2),y
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bne .3
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dey
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bne .2
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ldy #S.DEV.ID
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lda (DEVMGR.DEVPTR),y
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clc
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rts
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.3 lda DEVMGR.DEVPTR
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clc
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adc #S.DEV.SIZE
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sta DEVMGR.DEVPTR
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bcc .5
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inc DEVMGR.DEVPTR+1
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.5 dex
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bne .1
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lda #DEVMGR.ERRDNF
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sec
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rts
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*--------------------------------------
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* S.GetDevTable
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* IN :
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* OUT CC = OK, CS = ERROR
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* Y,A = PTR to dev table
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* X = LASTID
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*--------------------------------------
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S.GetDevTable >LDYAI DEVMGR.TABLE
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ldx DEVMGR.LASTID
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rts
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*--------------------------------------
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* S.DevOutA
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* IN :
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* A = hDev
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*--------------------------------------
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S.DevOutA ldx #DEVMGR.OUT
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jmp S.DevCallFunc
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*--------------------------------------
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* S.GetDevInfoA
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*--------------------------------------
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S.GetDevInfoA ldx #DEVMGR.GETINFO
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jmp S.DevCallFunc
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*--------------------------------------
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* PRIVATE
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*--------------------------------------
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* S.DevOpenA
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* IN :
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* A = hDev
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* OUT CC = OK, CS = ERROR
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*--------------------------------------
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S.DevOpenA ldx #DEVMGR.OPEN
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bra S.DevCallFunc
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*--------------------------------------
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* S.DevGetEventA
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* IN :
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* A = hDev
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* OUT CC = OK, CS = ERROR
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*--------------------------------------
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S.DevGetEventA ldx #DEVMGR.GETEVENT
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bra S.DevCallFunc
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*--------------------------------------
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* S.DevCloseA
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*--------------------------------------
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S.DevCloseA ldx #DEVMGR.CLOSE
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bra S.DevCallFunc
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*--------------------------------------
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S.DevCallFunc jsr S.GetDevByIDA
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bcs .9
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>STYA pDevContext
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ldy #S.DEV.hCS
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lda (pDevContext),y
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jsr S.GetMemPtrA X = unmodified
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>STYA Kernel.JMP
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>LDYA pDevContext
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jsr Kernel.DRVCALL Call DRV function
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.9 rts
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*--------------------------------------
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* S.CreateDevSlot
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* IN : none
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* OUT : A = DevID
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* set DEVMGR.DEVPTR to freeslot
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* init (DEVMGR.DEVPTR),S.DEV.ID with Dev.ID
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*--------------------------------------
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S.CreateDevice >LDYAI DEVMGR.TABLE
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>STYA DEVMGR.DEVPTR
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ldx #K.DEV.MAX
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.1 lda (DEVMGR.DEVPTR)
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bpl .3
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lda DEVMGR.DEVPTR
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clc
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adc #S.DEV.SIZE
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sta DEVMGR.DEVPTR
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bcc .2
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inc DEVMGR.DEVPTR+1
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.2 dex
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bne .1
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lda #DEVMGR.ERROOS
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sec
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rts
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.3 lda #0
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tay
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.4 sta (DEVMGR.DEVPTR),y
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iny
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cpy #S.DEV.SIZE
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bne .4
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inc DEVMGR.LASTID
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lda DEVMGR.LASTID
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ldy #S.DEV.ID
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sta (DEVMGR.DEVPTR),y
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clc
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rts
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*--------------------------------------
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* S.DestroyDevSlot
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* selected by (DEVMGR.DEVPTR)
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*--------------------------------------
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S.DestroyDevice ldy #S.DEV.hCS
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lda (DEVMGR.DEVPTR),y
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beq .1
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jsr S.FreeMemA
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.1 ldy #S.DEV.hDS
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lda (DEVMGR.DEVPTR),y
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beq .2
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jsr S.FreeMemA
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.2 ldy #S.DEV.hCMD
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lda (DEVMGR.DEVPTR),y
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beq .3
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jsr S.FreeMemA
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.3 ldy #S.DEV.hARGS
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lda (DEVMGR.DEVPTR),y
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beq .4
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jsr S.FreeMemA
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.4 rts
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*--------------------------------------
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DEVMGR.TABLE.NUL .DA #S.DEV.F.INUSE+S.DEV.F.CHAR+S.DEV.F.BLOCK
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.HS 00 ID
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>PSTRING "NUL" NAME
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DEVMGR.TABLE.KBD .DA #S.DEV.F.INUSE+S.DEV.F.CHAR
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.HS 01 ID
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>PSTRING "KBD" NAME
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DEVMGR.LASTID .BS 1
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*--------------------------------------
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MAN
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SAVE SYS/KERNEL.S.DEV
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LOAD SYS/KERNEL.S
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ASM
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