!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    FREELY REGISTER YOUR COPY AT MY HOMEPAGE: HOME.T-ONLINE.DE/HOME/ENOCH
                        OR SEND AN E-MAIL TO: _hendrix@usa.net
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                                   INDEX

  Disclaimer
  System Requirements
  CARDWARE, please register (for free)!
  Spreading this program
  Keyboard Layout
  Messages in Real-Mode
  Messages in Protected-Mode
  Helpers


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 Disclaimer
<==========>
HENDRнX or UCF cannot be held responsible for any damage GTR.COM causes.
You run GTR.COM at your own risc! To reduce the risc of damages:
■ do not cache your harddisk when working with GTR
■ keep backups!


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 System-Requirements
<===================>
■ 386+
■ fast CPU (486DX2/66 works okay)
■ plain real-mode (NO EMM386, NO HIMEM.SYS, NO Windows-DOS-box)
■ mouse at COM-port (/mp[portnumber])
■ 2MB RAM


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 CARDWARE
<========>
Okay, this is Cardware. That means if you like this program, you need to
register (for free) so the author knows that someone is using the program.
Otherwise there will be no new releases. Just send an e-mail to:
                      _hendrix@usa.net


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 Spreading
<=========>
Please pass this tool to your friends!


###############################################################################


 Keyboard-Layout
<===============>
     TO INTERRUPT GTR ANYTIME PRESS THE LEFT MOUSE-BUTTON (see /mp-option)

When the GTR-Screen is showed and when TRacing, try these keys:

F1 ......... go to the options-requester (see below)

F2-F7 ...... activate helper 1-7 (see 'HELPERS')

F8 ......... edit registers

F9 ......... sub 400h from HexView-offset
F10 ........ add 400h to HexView-offset
F11 ........ enter new HexView-segment and -offset

F12 ........ show the Userscreen. any key returns.

left [CTRL]  hold down to run while /TR+


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 Messages in Real-Mode
<=====================>
■ 86/186 detected
■ 286 detected
GTR needs a 386+ to run: buy a new computer!

■ V86-Mode detected
GTR does not work with EMM/QEMM: remove these memory-managers!

■ HIMEM.SYS detected
GTR uses the extended-memory-area in an incompatible way: boot flat!

■ Windows detected
There can only be one OperatingSystem at a time: quit Windows!

■ Error in the Commandline: xx
The option is not valid: look at OPTIONS.TXT!

■ Not enough Memory
There is not enough memory: GTR needs very little environment, remove all
memory-eating drivers!

■ Loading HELPERS: ■■■
GTR loads the helpers

■ Loading Program
The program to be unpacked is being loaded.

■ Loading .xxC
The macro-file is being loaded.

■ Reading EXE-Infos
EXEs are identified and infos read.

■ Tracing Program
GTR is going to work on the program: press left mouse-button to interrupt!

■ Program terminated
The program terminated to DOS.

■ Saving .xxD
The dumpfile is being saved.

■ Saving .xxI
The infofile is being saved.

■ Saving .xxC
The macrofile is being saved.

■ DOS error occured
Caused when files are read/written (e.g. EXE-file not found, disk full, ...).


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 Requesters/Messages in Protected-Mode
<=====================================>
■ Terminated
The Program terminated to DOS.

■ PrefetchQueueAlert [Save] [Cont] [Opt] [eXit]
The program altered bytes that are normally stored in the CPUs PrefetchQueue.
Due to the tracing the *altered* bytes are executed. This is often used to
determine whether the prog is traced or running. Try the -pe option to emulate
the PrefetchQueue or see if the program runs anyways.

■ Unwanted Instruction : xxxxx
GTR encountered an instruction that had to be emulated.

■ No Emulation
The program tried to execute a priveledged instruction. These instructions
can cause the OperatingSystem to loose control. This is not okay under
Windows, or EMM386, neither GTR.

■ Causing Int xxxx
A hardware-interrupt (8=Keyboard, C=Mouse, ...) is caused. To increase speed
use the 8e-option to emulate interrupt 8.

■ Unpacked? [Save] [Cont] [Opt] [eXit]
The program may be unpacked. Have a look at the registers and the memorydump.

■ Escape: [Cont] [Opt] [Save] [eXit]
You pressed the left mouse-button or pressed [ESC] while stepping.

■ Breakpoint: [Cont] [Opt] [Save] [eXit]
The IP=breakpoint and registers are set up like defined by the su-option.

■ Opt: [R][B/A][+/-][D][P][8][I][C][T]...[eXit]
Toggle the options: [Ru][Bp0000][su0000][Da][Pq][8o][It][Cs][Tr]...

■ Internal Exception/Interrupt
GTR has an internal error.

■ Trapping...
The trap-flag is set and int 1 is caused.

■ PQ-Emulation
The PrefetchQueue-emulation is active.

■ Unexpected Exception xxxx (...)
There was an exception that should not be caused at that moment. Mostly
due to wrong decryption there are 'Except 6 (invalid Opcode)' caused.
GTR might have been detected. Try to use the /pe option for a more
transparent tracing.


###############################################################################


 Helpers
<=======>
Let your program run while GTR debugs! Just make a file named 'helpers' and
put your COM-programs' names in brackets [myprog.com]. IMPORTANT:
when GTR calls a helper, it saves the complete task and jumps to the
helper (runs in v86-mode like the program to be unpacked) with following
register setup (the interrupt-table has been restored to normal):

CS=DS=ES
GS=PSP of debugged program
SS=GTR's data-segment
SP=stack in GTR's data segment (size=1000h)
DI=offset to saved interrupt-table of debugged program
SI=offset to register-set in GTR's data-segment:

EIP	dd	?
EFLAGS	dd	?
EAX	dd	?
ECX	dd	?
EDX	dd	?
EBX	dd	?
EAX	dd	?
ESP	dd	?
EBP	dd	?
ESI	dd	?
EDI	dd	?
ES	dw	?,0
CS	dw	?,0
SS	dw	?,0
DS	dw	?,0
FS	dw	?,0
GS	dw	?,0
emuEFLAGS dd	?
