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https://github.com/A2osX/A2osX.git
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124 lines
2.2 KiB
Plaintext
124 lines
2.2 KiB
Plaintext
NEW
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PREFIX /A2OSX.BUILD
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AUTO 4,1
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*/--------------------------------------
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* # GetDevByID.A
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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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* note: X Unmodified
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*\--------------------------------------
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K.GetDevByID.A cmp DevMgr.Count
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bcs K.GetDevDNF
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asl
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asl
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asl
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asl
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tay
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lda /Dev.Table
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adc #0
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rts CC
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*/--------------------------------------
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* # GetDevByName.YA
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* **In:**
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* Y,A = Ptr to device name (C-String)
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* **Out:**
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* CC = OK, CS = ERROR
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* X = DEVID
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* Y,A = DEVSLOT
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*\--------------------------------------
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K.GetDevByName.YA
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>STYA ZPPtr1
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>LDYAI Dev.Table+S.DEV.NAME
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>STYA ZPPtr2
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ldx #0
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.1 ldy #$ff
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.2 iny
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lda (ZPPtr1),y
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cmp (ZPPtr2),y
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bne .3
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ora (ZPPtr2),y Both char are 0 ?
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bne .2 no....loop
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lda ZPPtr2
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and #$F0
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tay
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lda ZPPtr2+1
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clc
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rts
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.3 lda ZPPtr2
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clc
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adc #S.DEV
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sta ZPPtr2
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bcc .4
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inc ZPPtr2+1
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.4 inx
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cpx DevMgr.Count
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bne .1
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K.GetDevDNF lda #MLI.E.NODEV CS from cpx/beq
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rts
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*/--------------------------------------
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* # GetDevStatus.A
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* **In:**
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* A = DevID
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* **Out:**
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* Y,A = S.DSTAT
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*\--------------------------------------
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K.DevClose.A ldx #DEVMGR.CLOSE
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.HS 2C BIT ABS
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K.GetDevStatus.A
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ldx #DEVMGR.STATUS
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jsr K.GetDevByID.A
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bcs K.IOCTL.9
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>STYA pDev
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jmp (pDev)
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*/--------------------------------------
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* # IOCTL
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* ## C
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* `int ioctl ( short int id, short int op, void *param);`
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* ## ASM
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* **In:**
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* `PUSHWI param`
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* `lda #op`
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* `ldy id`
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* `>SYSCALL IOCTL`
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* **Out:**
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* Y,A = ...
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*\--------------------------------------
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K.IOCTL tax op
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>PULLB .1+1 param LO
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>PULLB .2+1 param HI
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tya id
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jsr K.GetDevByID.A
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bcs K.IOCTL.9
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>STYA pDev
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.1 ldy #$ff SELF MODIFIED
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.2 lda #$ff SELF MODIFIED
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jmp (pDev) x = op
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K.IOCTL.9 rts
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*--------------------------------------
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MAN
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SAVE /A2OSX.SRC/SYS/KERNEL.S.DEV
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LOAD /A2OSX.SRC/SYS/KERNEL.S
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ASM
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