NEW PREFIX /A2OSX.BUILD AUTO 4,1 */-------------------------------------- * # GetDevByID * **In:** * A = DevID * **Out:** * CC = OK, CS = ERROR * Y,A = FD *\-------------------------------------- K.GetDevByID cmp DevMgr.DevCnt bcs K.GetDev.NODEV tax ldy FD.Table.PTRLO,x lda FD.Table.PTRHI,x * clc .9 rts CC */-------------------------------------- * # GetDevByName * **In:** * Y,A = Ptr to device name (C-String) * **Out:** * CC = OK, CS = ERROR * X = DEVID * Y,A = FD *\-------------------------------------- K.GetDevByName >STYA ZPPtr1 ldx #0 .1 ldy FD.Table.PTRLO,x lda FD.Table.PTRHI,x >STYA ZPPtr2 lda ZPPtr2 clc adc #S.FD.DEV.NAME sta ZPPtr3 lda ZPPtr2+1 adc #0 sta ZPPtr3+1 ldy #$ff .2 iny lda (ZPPtr1),y cmp (ZPPtr3),y bne .4 ora (ZPPtr3),y Both char are 0 ? bne .2 no....loop ldy ZPPtr2 lda ZPPtr2+1 clc rts .4 inx cpx DevMgr.DevCnt bne .1 K.GetDev.NODEV lda #MLI.E.NODEV sec K.GetDev.9 rts */-------------------------------------- * # GetDevStatus * ## C * `int getdevstatus ( int devid, S.DIB * dstat );` * ## ASM * **In:** * `>PUSHWI S.DIB` * `lda DevID` * `>SYSCALL GetDevStatus` * **Out:** *\-------------------------------------- K.GetDevStatus pha >PULLW K.S.IOCTL+S.IOCTL.BUFPTR pla jsr K.GetDevByID bcs K.GetDev.9 >STYA pFD ldy #S.FD.DEV.DRVPTR lda (pFD),y sta .1+1 iny lda (pFD),y sta .1+2 lda #S.IOCTL.STATCODE.GETDIB sta K.S.IOCTL+S.IOCTL.STATCODE >LDYAI K.S.IOCTL ldx #IOCTL.STATUS .1 jmp $ffff .9 rts */-------------------------------------- * # MKDev * **In:** * Y,A = Ptr to FD.DEV * **Out:** * A = DEVID *\-------------------------------------- K.MKDev >STYA .1+1 ldx DevMgr.DevCnt cmp #K.DEV.MAX beq .9 >LDYAI S.FD.DEV jsr K.GetMem >STYA .2+1 phx ldx DevMgr.DevCnt sta FD.Table.PTRHI,x tya sta FD.Table.PTRLO,x pla sta FD.Table.hMem,x .10 lda #$ff SELF MODIFIED sta FD.Table.F,x ldx #S.FD.DEV-1 .1 lda $ffff,x SELF MODIFIED .2 sta $ffff,x SELF MODIFIED dex bpl .1 inc DevMgr.DevCnt rts .9 lda #K.E.OOH * sec rts *-------------------------------------- MAN SAVE /A2OSX.SRC/SYS/KERNEL.S.DEV LOAD /A2OSX.SRC/SYS/KERNEL.S ASM