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    Go command

    Purpose:  Executes the program you are debugging.

              Stops the execution when the instruction at a specified ad-
              dress is reached (breakpoint), and displays the registers,
              flags, and the next instruction to be executed.

    Format:   G [=address][address [address...]]

    Remarks:  Program execution begins with the current instruction, whose
              address is determined by the contents of the CS and IP regi-
              sters, unless overridden by the =address parameter (the =
              must be entered). If =address is specified, program execu-
              tion begins with CS:=address.

              The Go command has two format options:

              Option 1                                                    

              Use this option to execute the program you are debugging
              without breakpoints. For example:

              G [=address]

              This option is useful when testing program execution with
              different parameters each time. (Refer to the Name com-
              mand.) Be certain the CS:IP values are set properly before
              issuing the G command, if not using = address.


              Option 2                                                    

              This option performs the same function as option 1 but, in
              addition, allows breakpoints to be set at the specified
              address. For example:

              G [=address] address [address...]

              This method causes execution to stop at a specified location
              so the system/program environment can be examined.

              You can specify up to ten breakpoints in any order. You may
              wish to take advantage of this if your program has many
              paths, and you want to stop the execution no matter which
              path the program takes.

              The DEBUG program replaces the instruction codes at the
              breakpoint addresses with an interrupt code (CCh). If any
              one breakpoint is reached during execution, the execution
              is stopped, the registers and flags are displayed, and all
              the breakpoint addresses are restored to their original in-
              struction codes. If no breakpoint is reached, the instruc-
              tions are not restored.

              Notes:

              1.  Once a program has reached completion (DEBUG has dis-
                  played the "Program terminated normally" message), it
                  is necessary to reload the program before it can be
                  executed again.

              2.  Make sure that the address parameters refer to locations
                  that contain valid CPU instruction codes. If you specify
                  an address that does not contain the first byte valid in-
                  struction, unpredictable results occur.

              3.  The stack pointer must be valid and have 6 bytes avail-
                  able for the Go command; otherwise, unpredictable results
                  occur.

              4.  If only an offset is entered for a breakpoint, the G
                  command assumes the segment contained in the CS register.

              5.  Do not set breakpoints at instructions in read-only mem-
                  ory (ROM BIOS or ROM BASIC).

              For example:

              G 102 1EF 208

              Execution begins with the current instruction, whose address
              is in the current values of CS:IP. The =address parameter
              was not used.

              Three breakpoints are specified; assume that the second is
              reached. Execution stops before the instruction at location
              CS:1EF is executed, the original instruction codes are re-
              stored, all three breakpoints are removed, the display oc-
              curs, and the Go command ends.

              Refer to the Register command for a description of the dis-
              play.