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120 lines
5.0 KiB
Plaintext
120 lines
5.0 KiB
Plaintext
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;__________________________________________________________________________________________________
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;
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; File: ATBootEqu.a
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;
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; Contains: Equates for .ATBoot driver (network booting)
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;
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; Written by: Patrick Dyson
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;
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; Copyright © 1989-1990 by Apple Computer, Inc. All rights reserved.
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;
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; Change History (most recent first):
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;
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; <6> 3/9/90 PWD Added offsets to driver globals for number of attempts and last
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; big error.
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; <5> 2/20/90 PWD fixed equates for boot blocks as per comment in atbootequ.a
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; <4> 1/25/90 PWD fixed equates for boot blocks.
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; <3> 12/28/89 SWC Fixed header and set tabs to 4.
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; <2> 12/19/89 PWD Adding to bbs
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; <1.1> 12/12/89 PWD Added support for self-authenticating images
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; <1.0> 10/30/89 PWD Adding to EASE
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;__________________________________________________________________________________________________
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BootDDPType EQU 10 ; our DDP type
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BootSocket EQU 10 ; our static socket
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minPktSize EQU 6 ; the minumum header size
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BootStore EQU $B50 ; lomem storage place
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;
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; Constants within the packet for a received block packet
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;
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packetVersion EQU 1 ; (byte) Protocol version number
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rbNullCommand EQU 0 ; ignore this one
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rbMapUser EQU 1 ; user record request
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rbUserReply EQU 2 ; user record reply
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rbImageRequest EQU 3 ; image request & bitmap
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rbImageData EQU 4 ; image data
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rbImageDone EQU 5 ; server done with current image
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rbUserRecordUpdate EQU 6 ; new user info to server
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rbUserRecordAck EQU 7 ; info received from server
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;
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; Offsets within the socket listener globals
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;
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bootImageID EQU 0 ; (word) our image ID (-1 if uninit)
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machineID EQU bootImageID+2 ; (word) our machine id
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bitmapBase EQU machineID+2 ; (long) bitmap buffer area
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lastBlockNo EQU bitmapBase+4 ; (word) last block we have space for
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packetsReceived EQU lastBlockNo+2 ; (word) image blocks received
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imageBuffer EQU packetsReceived+2 ; (long) image buffer area
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blockSize EQU imageBuffer+4 ; (word) data block size
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trafficTimer EQU blockSize+2 ; (long) ticks when last block in
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progressTimer EQU trafficTimer+4 ; (long) ticks when last NEW block in
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retransThreshold EQU progressTimer+4 ; (long) dynamic ticks between retrans
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roundTrip EQU retransThreshold+4 ; (word) packet roundtrip time
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backOff EQU roundTrip+2 ; (word) exponential backoff factor
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lastRetransmission EQU backOff+2 ; (long) time of last transmission
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server_addr EQU lastRetransmission+4 ; (long) server address...
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tuple_table EQU server_addr+4 ; (long) pointer to tuple table
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readPacketArea EQU tuple_table+4 ; (586 bytes) ddp read area
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endOfGlobals EQU readPacketArea+586 ; end of globals
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SktLsnGSize EQU endOfGlobals ; globals size
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;
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; Offsets within a user record
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;
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; <pd 5> now padded to 586 bytes (maxddpsize)
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URserverName EQU 0 ; server name...
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URserverZone EQU URserverName+33 ; server zone
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URserverVol EQU URserverZone+33 ; volume name
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URserverAuthMeth EQU URserverVol+32 ; user name
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URsharedSysDirID EQU URserverAuthMeth+2 ; shared system folder dir id
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URuserDirID EQU URsharedSysDirID+4 ; user system folder dir id
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URfinderInfo EQU URuserDirID+4 ; saved finder info
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URbootBlocks EQU URfinderInfo+32 ; saved boot blocks
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URbootFlag EQU URbootBlocks+138 ; server based flags
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UREnd EQU URbootFlag+2 ; total structure size
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URSize EQU UREnd+306-18 ; pad for maxddp size
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;
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; Offsets within the driver globals
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;
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netBootRefNum EQU 0 ; (word) refnum of .netBoot driver
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netError EQU netBootRefNum+2 ; (word) last error recorded
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netimageBuffer EQU netError+2 ; (long) pointer to downloaded image
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netImageSignature EQU netimageBuffer+4 ; (16 bytes) image signature
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netServerAddr EQU netImageSignature+16 ; (long) source server address
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netBootPktRply EQU netServerAddr+4 ; (BootPacketReply)
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netBootStorage EQU netBootPktRply+18+URsize; storage for downloaded code
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netpram EQU netBootStorage+4 ; (ptr) copy of pram record
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netnumAttempts EQU netpram+4 ; number of unsuccessful attempts
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netbigError EQU netnumAttempts+2 ; error that makes us guest boot
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endOfDGlobals EQU netbigError+2
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ATGlobalsSize EQU endOfDGlobals ; size of globals for allocation
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;
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; Additional offsets for the record passed to the start code (pram record)
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;
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PRosType EQU 0 ; (byte) os type
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PRprotocol EQU PRosType+1 ; (byte) protocol to boot over
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PRerrors EQU PRprotocol+1 ; (byte) last error
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PRflags EQU PRerrors+1 ; (byte) net boot flags
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PRsrvrHint EQU PRflags+1 ; (byte) last server address we booted from
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PRtimeout EQU PRsrvrHint+1 ; (byte) seconds to wait for bootserver
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PRsignature EQU PRtimeout+1 ; 16 byte image signature
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PRuserName EQU PRsignature+8 ; 31 byte user name
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PRpassword EQU PRuserName+31 ; 8 byte password
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PRsize EQU PRpassword+16 ; total structure size
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;
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; Constants for the flags (PRflags) (1=yes, 0=no) ain't binary great for boolean logic
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;
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PRbootingEnabled EQU 7 ; net booting disabled
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PRsavedPasswd EQU 6 ; password saved
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