788 lines
28 KiB
Plaintext
788 lines
28 KiB
Plaintext
include 'Structs.a' ; fe* constants
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kUserRecLen equ 568
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kInitialWaitMsec equ 10000
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kSubsequentWaitMsec equ 1000
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Code
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; The ROM issued a _Read call that eventually reached here.
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; We need to handle this _Read trap directly, without the intervening .netBOOT and .ATBOOT drivers.
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; We do this by rewinding the Device Manager's return address by 2 bytes.
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; Why?
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; The ROM network boot mechanism is complicated and buggy.
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; The workarounds are difficult.
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; Therefore this big hack obviates many little hacks.
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; First problem: this is not a safe place to keep code. Jump away.
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; (Using the heap while all the netBOOT junk is there would cause fragmentation.)
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lea ResumeAfterCopy,A0
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move.l #CodeEnd-ResumeAfterCopy,D0
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lea 4096(A5),A1
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dc.w $A02E ; _BlockMove
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jmp 4096(A5)
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ResumeAfterCopy
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; Salvage some possibly useful information from ATBOOT, while it is still running:
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; Server address
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lea gServer,A1
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move.l 8(SP),A0 ; global pointer
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move.l 24(A0),(A1) ; AddrBlock
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addq.b #1,(A1) ; increment the socket number by 1
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; User record
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lea gUserRec,A1
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move.l 8(SP),A0 ; global pointer
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lea 46(A0),A0
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move.l #kUserRecLen,D0
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dc.w $A02E ; _BlockMove
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; Currently the call stack looks like this:
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; ROM _Read to get boot blocks
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; .netBOOT Read routine
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; .ATBOOT Control routine
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; direct call to this block of code
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; But we want to close and remove .netBOOT & .ATBOOT, so we need to return
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; from their Device Manager calls, and steal control from the ROM.
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; We do this by scanning the stack for the return address of the original _Read.
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move.l $2AE,A0 ; A0 = ROMBase (lower limit)
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lea $4000(A0),A1 ; A1 = ROMBase + a bit (upper limit)
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move.l SP,A2
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.loop addq.l #2,A2 ; A2 = where we search the stack
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move.l (A2),A3 ; A3 = potential return address
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cmp.l A0,A3 ; lower limit check
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bls.s .loop
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cmp.l A1,A3 ; upper limit check
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bhi.s .loop
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cmp.w #$A002,-2(A3) ; _Read trap check
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bne.s .loop
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pea GoHereFromReadTrap ; take over
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move.l (SP)+,(A2)
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lea ROMAfterReadTrap,A2 ; save original for later
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move.l A3,(A2)
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moveq.l #-1,D0 ; .netBOOT/.ATBOOT don't do any more damage if an error is returned
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rts
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ROMAfterReadTrap
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dc.l 0
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GoHereFromReadTrap
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; Now we are outside .netBOOT/.ATBOOT. We can shut them down, and set up our driver in a clean environment.
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move.l ROMAfterReadTrap,-(SP) ; our return address is to ROM
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sub.l #2,(SP) ; repeating the _Read trap
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movem.l A0-A6/D0-D7,-(SP) ; save registers conservatively (especially A0)
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; A4 = param block to the .netBOOT _Read call, because we will use it a lot
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move.l A0,A4
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; Close and delete .netBOOT (which will close .ATBOOT)
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lea -$32(SP),SP
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move.l SP,A0
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move.w $18(A4),$18(A0) ; ioRefNum
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dc.w $A001 ; _Close
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lea $32(SP),SP
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move.w $18(A4),D0 ; ioRefNum
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dc.w $A03E ; _DrvrRemove
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move.w #-51,D0 ; ioRefNum ; also delete .ATBOOT for neatness
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dc.w $A03E ; _DrvrRemove
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; Open .ATP
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lea -$32(SP),SP
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move.l SP,A0
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bsr DrvrClearBlock
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pea ATPName
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move.l (SP)+,$12(A0) ; ioNamePtr
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dc.w $A000 ; _Open
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lea $32(SP),SP
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; ask about every image, draw them on the screen
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lea ATPName,A0
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move.w #4,D0
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lea $0,A1
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move.l #100,D1
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move.l #'Elmo',D2
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bsr AskQuestion
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move.w #$E111,D0
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dc.w $A9C9
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; A3 = our driver in sysheap (plus user record)
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move.l #DrvrEnd-DrvrBase+kUserRecLen,D0
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dc.w $A51E ; NewPtrSys
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move.l A0,A1
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lea DrvrBase,A0
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move.l #DrvrEnd-DrvrBase+kUserRecLen,D0
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dc.w $A02E ; BlockMove
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move.l A1,A3
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; Install the driver in the unit table. Take over netBOOT's old unit number.
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move.w $18(A4),D0 ; ioRefNum
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dc.w $A43D ; _DrvrInstall ReserveMem
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; That call created a driver control entry (DCE). Find and lock.
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move.l $11C,A0 ; UTableBase
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move.w $18(A4),D0 ; ioRefNum
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not.w D0
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lsl.w #2,D0
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add.w D0,A0
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move.l (A0),A0
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dc.w $A029 ; _HLock
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move.l (A0),A0
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; Populate the empty DCE that DrvrInstall left us (forget fields related desk accessories)
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move.l A3,(A0) ; dCtlDriver = driver pointer (not handle)
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move.w (A3),4(A0) ; dCtlFlags = drvrFlags
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; Open our driver
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lea -$32(SP),SP
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move.l SP,A0
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bsr DrvrClearBlock
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lea DrvrName,A1
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move.l A1,$12(A0) ; IOFileName
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dc.w $A000 ; _Open
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lea $32(SP),SP
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; Add the a drive queue entry (DQE).
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lea dqLink-DrvrBase(A3),A0
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move.l $16(A4),D0
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dc.w $A04E ; _AddDrive (A0=DQE, D0=drvnum/drefnum)
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; Re-execute the _Read trap in ROM
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movem.l (SP)+,A0-A6/D0-D7
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rts
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ATPName dc.b 4, '.ATP', 0
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AskQuestion ; A0=txbuf/D0=txlen/A1=rxbuf/D1=rxlen/D2=userdata -> D0=rxlen
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.pb equ -$34
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.bds equ .pb-12
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.size equ .pb
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movem.l D3-D7/A2-A4,-(SP)
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link A6,#.size
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move.l A6,A4
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moveq #(-.size)/2-1,D4
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.clrloop clr.w -(A4)
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dbra D4,.clrloop
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move.l A0,A4 ; request buffer address
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lea .bds(A6),A3 ; Buffer Descriptor Structure
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move.w D1,(A3) ; populate it with buffer addr/maxlen
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move.l A1,2(A3)
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lea .pb(A6),A0
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move.l D2,$12(A0)
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move.w #-11,$18(A0) ; ioRefNum = .ATP
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move.w #255,$1A(A0) ; csCode = sendRequest
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move.l gServer,$1E(A0) ; addrBlock
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move.b gUserRec,$1E+3(A0) ; addrBlock socket (EBP)
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move.w D0,$22(A0) ; reqLength
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move.l A4,$24(A0) ; reqPointer
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move.l A3,$28(A0) ; bdsPointer
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move.l #$010400FF,$2C(A0)
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; numOfBuffs/timeoutVal/numOfResps/retryCount
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dc.w $A004 ; _Control
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bne.s .returnError
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move.w 6(A3),D0
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.returnError
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unlk A6
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movem.l (SP)+,D0-D7/A0-A4
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DrvrBase
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dc.w $4F00 ; dReadEnable dWritEnable dCtlEnable dStatEnable dNeedLock
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dc.w 0 ; delay
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dc.w 0 ; evt mask
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dc.w 0 ; menu
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dc.w DrvrOpen-DrvrBase
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dc.w DrvrPrime-DrvrBase
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dc.w DrvrControl-DrvrBase
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dc.w DrvrStatus-DrvrBase
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dc.w DrvrClose-DrvrBase
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DrvrName dc.b 8, ".netBOOT", 0
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g
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gImage dc.l 0 ; "configuration mode" by default
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gMyDCE dc.l 0
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gExpectHdr dc.l 0
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gProgress dc.l 0
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gQuery dcb.b 20 ; really need to consider the length of this!
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gWDS dcb.b 2+4+2+4+2+4+2 ; room for an address and two data chunks
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gMyPB dcb.b $32+2 ; allow us to clear it with move.l's
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odd
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gServer dc.l 0
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gSaveAddr dcb.b 16
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gAddr dcb.b 16
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even
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; Time Manager task
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tmLink dc.l 0
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tmType dc.w 0
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tmAddr dc.l 0
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tmCount dc.l 0
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; Drive queue element
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dqFlags dc.l $00080000
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dqLink dc.l 0
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dqType dc.w 1
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dqDrive dc.w 0
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dqRefNum dc.w 0
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dqFSID dc.w 0
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dqDrvSz dc.w 0
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dqDrvSz2 dc.w 0
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; a0=iopb, a1=dce on entry to all of these...
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DrvrOpen
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lea gMyDCE,A2 ; dodgy, need this for IODone
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move.l A1,(A2)
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move.w #0,$10(A0) ; ioResult
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DrvrPrime
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; Convert the ioPosOffset in the parameter block to a block offset (allows large vol support).
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btst.b #0,$2C(A0) ; test ioPosMode & kUseWidePositioning
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bne.s .wide
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.notwide move.l $10(A1),D0
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bra.s .gotD0
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.wide move.l $2E(A0),D0 ; the block offset can only be up to 32 bits
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or.l $32(A0),D0
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.gotD0 ror.l #4,D0 ; now D0 = (LS 23 bits) followed by (MS 9 bits)
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ror.l #5,D0
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move.l D0,$2E(A0) ; ioPosOffset = D0 = byte_offset/512
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; Return with a "pending" ioResult.
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move.w #1,$10(A0) ; ioResult = pending. We will return without an answer.
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; Wang the state machine!
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cmp.b #2,7(A0) ; ioTrap == _Read?
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bne DrvrSendWrite ; transition from "Idle" to "Await Comp Send Write Packet"
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bra DrvrSendRead ; transition from "Idle" to "Await Comp Send Read Packet"
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DrvrReSendRead
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; Time Manager task
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lea tmLink,A0
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dc.w $A059 ; _RmvTime
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move.l gMyDCE,A1 ; get Device Mgr registers
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move.l 6+2(A1),A0
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; truncate ioActCount
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and.l #-32*512,$28(A0) ; truncate ioActCount
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DrvrSendRead
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; Called from Prime routine, socket listener or Time Manager:
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; PB/DCE in A0/A1 must be preserved (but we only require A0)
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lea gExpectHdr,A2
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clr.w (A2)+
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addq.w #1,(A2) ; packet filter sequence word
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lea gProgress,A2
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clr.l (A2)
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bsr.s DrvrCopyAddrStruct
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lea gQuery,A2
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move.w #$8000,(A2)+ ; Means a polite request
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move.w gExpectHdr+2,(A2)+
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move.l gImage,(A2)+
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move.l $28(A0),D0 ; [ioActCount (in bytes)
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lsr.l #4,D0
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lsr.l #5,D0 ; / 512]
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add.l $2E(A0),D0 ; + ioPosOffset (in blocks)
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move.l D0,(A2)+ ; -> "offset" field of request
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move.l $24(A0),D0 ; [ioReqCount (in bytes)
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sub.l $28(A0),D0 ; - ioActCount (in bytes)]
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lsr.l #4,D0
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lsr.l #5,D0 ; / 512
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move.l D0,(A2)+ ; -> "length" field of request
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lea gWDS,A2
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clr.w (A2)+ ; WDS+0: reserved field
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pea gAddr
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move.l (SP)+,(A2)+ ; WDS+2: pointer to address struct
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move.w #16,(A2)+ ; WDS: push pointer/length
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pea gQuery
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move.l (SP)+,(A2)+
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clr.w (A2)+ ; WDS: end with zero
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move.l A0,-(SP)
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lea gMyPB,A0
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bsr DrvrClearBlock
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pea DrvrDidSendRead
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move.l (SP)+,$C(A0) ; ioCompletion
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move.w #-10,$18(A0) ; ioRefNum = .MPP
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move.w #246,$1A(A0) ; csCode = writeDDP
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move.b #10,$1C(A0) ; socket = 10 (hardcoded)
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move.b #1,$1D(A0) ; set checksumFlag
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pea gWDS
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move.l (SP)+,$1E(A0) ; wdsPointer to our WriteDataStructure
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dc.w $A404 ; _Control ,async
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move.l (SP)+,A0
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rts
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DrvrCopyAddrStruct
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movem.l A0-A1,-(SP)
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lea gSaveAddr,A0
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lea gAddr,A1
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moveq.l #16,D0
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dc.w $A22E ; _BlockMoveData
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movem.l (SP)+,A0-A1
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rts
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DrvrDidSendRead
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; Called as completion routine: PB/result in A0/D0, must preserve all registers other than A0/A1/D0-D2
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lea gExpectHdr,A0
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move.w #$8100,(A0) ; Enable packet reception
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move.l #kInitialWaitMsec,D0
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DrvrInstallReSendRead
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; Called from anywhere, D0=waittime, can clobber anything
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lea tmLink,A0
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pea DrvrReSendRead
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move.l (SP)+,tmAddr-tmLink(A0)
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move.l D0,-(SP)
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dc.w $A058 ; _InsTime
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move.l (SP)+,D0
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dc.w $A05A ; _PrimeTime
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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DrvrReSendWrite
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; Time Manager task
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lea tmLink,A0
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dc.w $A059 ; _RmvTime
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move.l gMyDCE,A1 ; get Device Mgr registers
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move.l 6+2(A1),A0
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; truncate ioActCount
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sub.l #512,$28(A0)
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and.l #-32*512,$28(A0) ; truncate ioActCount
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DrvrSendWrite
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; Called from Prime routine, socket listener or Time Manager:
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; PB/DCE in A0/A1 must be preserved (but we only require A0)
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; D1 = block index within chunk
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move.l $28(A0),D1
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lsr.l #5,D1
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lsr.l #4,D1
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move.l D1,D0
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and.l #32-1,D1
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move.l $28(A0),D2
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add.l #512,D2
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cmp.l $24(A0),D2
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bne.s .notLastBlock
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bset #7,D1
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.notLastBlock
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; D0 = first block of chunk
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and.l #-32,D0
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add.l $2E(A0),D0
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tst.l D1
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bne.s .notFirstBlockOfChunk
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lea gExpectHdr,A2
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clr.w (A2)+
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addq.w #1,(A2) ; packet filter sequence word
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.notFirstBlockOfChunk
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bsr DrvrCopyAddrStruct
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lea gQuery,A2
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move.b #$82,(A2)+ ; Means a polite request
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move.b D1,(A2)+ ; nth block of this chunk follows
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move.w gExpectHdr+2,(A2)+
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move.l gImage,(A2)+
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move.l D0,(A2)+ ; first block of this chunk
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lea gWDS,A2
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clr.w (A2)+ ; WDS+0: reserved field
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pea gAddr
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move.l (SP)+,(A2)+ ; WDS+2: pointer to address struct
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move.w #12,(A2)+ ; WDS: push length/ptr of header
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pea gQuery
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move.l (SP)+,(A2)+
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move.w #512,(A2)+ ; WDS: push length/ptr of body
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move.l $20(A0),D0 ; ptr = ioBuffer
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add.l $28(A0),D0 ; + ioActCount
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move.l D0,(A2)+
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clr.w (A2)+ ; WDS: end with zero
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move.l A0,-(SP)
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lea gMyPB,A0
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bsr DrvrClearBlock
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pea DrvrDidSendWrite
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move.l (SP)+,$C(A0) ; ioCompletion
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move.w #-10,$18(A0) ; ioRefNum = .MPP
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move.w #246,$1A(A0) ; csCode = writeDDP
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move.b #10,$1C(A0) ; socket = 10 (hardcoded)
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move.b #1,$1D(A0) ; set checksumFlag
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pea gWDS
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move.l (SP)+,$1E(A0) ; wdsPointer to our WriteDataStructure
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dc.w $A404 ; _Control ,async
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move.l (SP)+,A0
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rts
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DrvrDidSendWrite ; completion routine for the above control call..
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; need to test whether to send another, or switch to wait mode...
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move.l gMyDCE,A0
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move.l 6+2(A0),A0 ; A3 = dCtlQHdr.qHead = ParamBlk
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movem.l $24(A0),D0/D1 ; D0=ioReqCount, D1=ioActCount
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add.l #512,D1
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move.l D1,$28(A0)
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cmp.l D0,D1
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beq.s DrvrInstallReSendWrite
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and.l #(32-1)*512,D0
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beq.s DrvrInstallReSendWrite
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bra DrvrSendWrite
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DrvrInstallReSendWrite
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lea tmLink,A0
|
|
pea DrvrReSendWrite
|
|
move.l (SP)+,tmAddr-tmLink(A0)
|
|
dc.w $A058 ; _InsTime
|
|
move.l #kInitialWaitMsec,D0
|
|
dc.w $A05A ; _PrimeTime
|
|
rts
|
|
|
|
DrvrClearBlock
|
|
move.w #$32/2-1,D0
|
|
.loop clr.w (A0)+
|
|
dbra D0,.loop
|
|
lea -$32(A0),A0
|
|
rts
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrSockListener
|
|
; Registers on call to DDP socket listener:
|
|
; A0 Reserved for internal use by the .MPP driver. You must preserve this register
|
|
; until after the ReadRest routine has completed execution.
|
|
; A1 Reserved for internal use by the .MPP driver. You must preserve this register
|
|
; until after the ReadRest routine has completed execution.
|
|
; A2 Pointer to the .MPP driver's local variables. Elliot says: the frame and packet
|
|
; header ("RHA") are at offset 1 from A2 (keeps the 2-byte fields aligned)
|
|
; A3 Pointer to the first byte in the RHA past the DDP header bytes (the first byte
|
|
; after the DDP protocol type field).
|
|
; A4 Pointer to the ReadPacket routine. The ReadRest routine starts 2 bytes after the
|
|
; start of the ReadPacket routine.
|
|
; A5 Free for your use before and until your socket listener calls the ReadRest routine.
|
|
; D0 Lower byte is the destination socket number of the packet.
|
|
; D1 Word indicating the number of bytes in the DDP packet left to be read (that is,
|
|
; the number of bytes following the DDP header).
|
|
; D2 Free for your use.
|
|
; D3 Free for your use.
|
|
|
|
; Registers on entry to the ReadPacket routine
|
|
; A3 Pointer to a buffer to hold the data you want to read
|
|
; D3 Number of bytes to read; must be nonzero
|
|
|
|
; Registers on exit from the ReadPacket routine
|
|
; A0 Unchanged
|
|
; A1 Unchanged
|
|
; A2 Unchanged
|
|
; A3 Address of the first byte after the last byte read into buffer
|
|
; A4 Unchanged
|
|
; D0 Changed
|
|
; D1 Number of bytes left to be read
|
|
; D2 Unchanged
|
|
; D3 Equals 0 if requested number of bytes were read, nonzero if error
|
|
|
|
; Registers on entry to the ReadRest routine
|
|
; A3 Pointer to a buffer to hold the data you want to read
|
|
; D3 Size of the buffer (word length); may be 0
|
|
|
|
; Registers on exit from the ReadRest routine
|
|
; A0 Unchanged
|
|
; A1 Unchanged
|
|
; A2 Unchanged
|
|
; A3 Pointer to first byte after the last byte read into buffer
|
|
; D0 Changed
|
|
; D1 Changed
|
|
; D2 Unchanged
|
|
; D3 Equals 0 if requested number of bytes exactly equaled the size of the buffer;
|
|
; less than 0 if more data was left than would fit in buffer (extra data equals
|
|
; -D3 bytes); greater than 0 if less data was left than the size of the buffer
|
|
; (extra buffer space equals D3 bytes)
|
|
|
|
; cmp.b #10,-1(A3) ; DDP protocol type better be ATBOOT
|
|
; bne.s DrvrTrashPacket
|
|
|
|
moveq.l #4,D3
|
|
jsr (A4) ; Read the nice short packet header
|
|
bne DrvrTrashPacket
|
|
move.l -4(A3),D2
|
|
|
|
move.l gExpectHdr,D3 ; Check the packet header
|
|
eor.l D2,D3
|
|
swap D3
|
|
clr.b D3
|
|
bne DrvrTrashPacket
|
|
|
|
movem.l A0-A1/D0-D2,-(SP)
|
|
lea tmLink,A0
|
|
dc.w $A059 ; _RmvTime
|
|
movem.l (SP)+,A0-A1/D0-D2
|
|
|
|
btst #25,D2
|
|
bne.s DrvrDidReceiveWrite
|
|
|
|
|
|
DrvrDidReceiveRead
|
|
swap D2
|
|
and.l #32-1,D2 ; D2.L = block offset within 32blk chunk
|
|
|
|
move.l gMyDCE,A3
|
|
move.l 6+2(A3),A3 ; A3 = dCtlQHdr.qHead
|
|
|
|
move.l $28(A3),D3 ; D3 = .ioActCount...
|
|
lsr.l #5,D3
|
|
lsr.l #4,D3 ; ...now in number of blocks
|
|
and.l #-32,D3 ; ...rounded down to a block chunk
|
|
add.l D2,D3 ; ...added back the received block
|
|
asl.l #8,D3
|
|
add.l D3,D3 ; ... = byte offset within buffer
|
|
|
|
move.l $20(A3),A3 ; .ioBuffer
|
|
add.l D3,A3 ; A3 = ioBuffer + offset
|
|
move.l #512,D3 ; D3 = size
|
|
jsr 2(A4) ; ReadRest (A3=dest, D3=length)
|
|
bne DrvrTrashPacket
|
|
|
|
lea gProgress,A1 ; Skip the next step if this packet is a repeat
|
|
move.l (A1),D1
|
|
bset.l D2,D1 ; (we saved blkidx in D2 before ReadRest)
|
|
bne.s DrvrTrashPacket
|
|
move.l D1,(A1)
|
|
|
|
move.l gMyDCE,A0
|
|
move.l 6+2(A0),A0 ; dCtlQHdr.qHead
|
|
|
|
move.l $28(A0),D0 ; Increment ioActCount and cmp with ioReqCount
|
|
add.l #512,D0
|
|
move.l D0,$28(A0)
|
|
cmp.l $24(A0),D0
|
|
beq.s DrvrIODone
|
|
|
|
addq.l #1,D1 ; If bitmap=$FFFFFFFF then get the next chunk of 32
|
|
beq DrvrSendRead ; A0 must be the PB
|
|
|
|
move.l #kSubsequentWaitMsec,D0
|
|
bra DrvrInstallReSendRead ; Just return to await more packets.
|
|
|
|
DrvrDidReceiveWrite
|
|
moveq.l #0,D3
|
|
jsr 2(A4) ; ReadRest (D3=0 i.e. discard)
|
|
|
|
move.l gMyDCE,A0
|
|
move.l 6+2(A0),A0 ; A3 = dCtlQHdr.qHead = ParamBlk
|
|
|
|
movem.l $24(A0),D0/D1 ; D0=ioReqCount, D1=ioActCount
|
|
cmp.l D0,D1
|
|
blo DrvrSendWrite
|
|
|
|
bra.s DrvrIODone
|
|
|
|
DrvrIODone
|
|
lea gExpectHdr,A1 ; Disable this socket listener
|
|
clr.w (A1)
|
|
|
|
move.l gMyDCE,A1
|
|
moveq.l #0,D0
|
|
move.l $8FC,A0 ; jIODone (D0 = result, A1 = DCE)
|
|
jmp (A0)
|
|
|
|
DrvrTrashPacket
|
|
moveq.l #0,D3
|
|
jmp 2(A4) ; ReadRest nothing
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrControl
|
|
cmp.w #21,$1A(A0)
|
|
beq.s control_kDriveIcon
|
|
cmp.w #22,$1A(A0)
|
|
beq.s control_kMediaIcon
|
|
bra.s control_unknown
|
|
|
|
control_kDriveIcon
|
|
control_kMediaIcon
|
|
lea DrvrIcon,A2
|
|
move.l A2,$1C(A0)
|
|
clr.w $10(A0) ; ioResult = noErr
|
|
bra DrvrFinish
|
|
|
|
control_unknown
|
|
move.w #-17,$10(A0) ; ioResult = controlErr
|
|
bra DrvrFinish
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrStatus
|
|
cmp.w #6,$1A(A0)
|
|
beq.s status_fmtLstCode
|
|
cmp.w #8,$1A(A0)
|
|
beq.s status_drvStsCode
|
|
bra.s status_unknown
|
|
|
|
status_fmtLstCode ; tell them about our size
|
|
move.l dqDrvSz,D0
|
|
swap D0
|
|
lsl.l #5,D0 ; convert from blocks to bytes
|
|
lsl.l #4,D0
|
|
|
|
move.w #1,$1C(A0)
|
|
move.l $1C+2(A0),A2
|
|
move.l D0,0(A2)
|
|
move.l #$40000000,4(A2)
|
|
|
|
move.w #0,$10(A0) ; ioResult = noErr
|
|
bra DrvrFinish
|
|
|
|
status_drvStsCode ; tell them about some of our flags
|
|
move.w #0,$1C(A0) ; csParam[0..1] = track no (0)
|
|
move.l dqFlags,$1C+2(A0) ; csParam[2..5] = same flags as dqe
|
|
|
|
move.w #0,$10(A0) ; ioResult = noErr
|
|
bra DrvrFinish
|
|
|
|
status_unknown
|
|
move.w #-18,$10(A0) ; ioResult
|
|
bra DrvrFinish
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrClose
|
|
move.w #0,$10(A0) ; ioResult
|
|
rts
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrFinish
|
|
move.w 6(A0),D1 ; iopb.ioTrap
|
|
btst #9,D1 ; noQueueBit
|
|
bne.s DrvrNoIoDone
|
|
move.l $8FC,-(SP) ; jIODone
|
|
DrvrNoIoDone
|
|
rts
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
DrvrIcon
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %10000000000000000000000000000001
|
|
dc.l %10000000000000001000000000000001
|
|
dc.l %10010010010010011001001001001001
|
|
dc.l %10010010010010000001001001001001
|
|
dc.l %10010010010010000001001001001001
|
|
dc.l %10010010010010010001001001001001
|
|
dc.l %10010010010010001001001001001001
|
|
dc.l %10010010010010010001001001001001
|
|
dc.l %10010010010010001001001001001001
|
|
dc.l %10010010010010010001001001001001
|
|
dc.l %10000000000000000000000000000001
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %00000000000000000000000000000000
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.l %11111111111111111111111111111111
|
|
dc.b 22, "AppleTalk NetBoot Disk", 0
|
|
|
|
gUserRec ; append user record here later on, no need to waste space on zeros
|
|
|
|
DrvrEnd
|
|
CodeEnd
|