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- CHAPTER 1 - Introduction
-
- 01.01 Product Description
- 01.02 Using This Manual
- 01.03 System Requirements
-
- 01.01 Product Description
-
- Soft-ICE is a software debugging tool that provides hardware-level
- debugging capabilities to PCDOS and MSDOS debuggers.
-
- Soft-ICE uses 80386 protected mode to run DOS in a virtual machine.
- This gives Soft-ICE complete control of the DOS environment. Soft-ICE
- uses 80386 protected mode features, such as paging, I/O privilege
- level, and break point registers, to add hardware-level break points
- your existing DOS debugger.
-
- Soft-ICE was designed with three goals in mind:
-
- * To utilize the 80386 virtual machine capability to debugging
- features that are impossible or prohibitively slow with
- software-only debuggers (e.g., real time hardware-level break
- points, memory protection, breaking out of hung programs, etc.).
- * To work with existing debuggers. We wanted to provide a tool that
- worked with existing tools. We designed Soft-ICE in such a way
- that you don't have to learn a new debugger to get powerful
- hardware debugging capabilities.
- * To be a user-friendly program with a window that pops up
- instantly and does not get in the way. All of the Soft-ICE
- commands were designed to fit in a small window so that
- information on the screen behind Soft-ICE could still be viewed.
- Dynamic on-line help assists users who only use Soft-ICE
- occasionally.
-
- The Soft-ICE program features:
-
- * real time break points on memory reads/writes, port reads/writes,
- memory ranges, and interrupts
- * back trace history ranges
- * symbolic and source level debugging
- * an environment that works with existing debuggers
- * full EMM 4.0 support
- * backfilling to raise base memory past 640K for monochrome systems
- * a window that can pop up at any time
- * the ability to break out by keystroke even if interrupts are
- disabled
- * debugger code that is isolated by 80386 protected mode. This
- prevents an errant program from modifying or destroying Soft-ICE;
- even if DOS clobbered, Soft-ICE will still work
- * the ability to configure Soft-ICE to use no memory in the lower
- 640K if the system has more than 640K
- * user-friendly dynamic help
- * the ability to be used as a stand-alone debugger. This ability is
- useful if you are debugging loadable device drivers, interrupt
- handlers, or boot sequences where traditional debuggers can't go,
- if your debugger suffers from re-entrancy problems
- * a soft boot capability that allows debugging with non-DOS
- operating systems or self-booting programs
- * a simple installation, with no DIP switches to set no I/O ports
- taken up, and no memory address space conflicts
-
- NOTE : Soft-ICE will work with real address mode programs only. It
- will not work with programs that use 80286 or 80386 protected mode
- instructions.
-
- 01.02 Using This Manual
-
- The Soft-ICE manual is divided into four main sections:
-
- * Learning Soft-ICE (Section I)
- * Commands (Section II)
- * Support Features (Section lII)
- * Advanced Topics (Section IV)
-
- Soft-ICE can be used for most debugging problems after reading Section
- I, Learning Soft-ICE, and a little experimentation. Soft-ICE's
- user-friendly on-line help can be used to reference command
- descriptions and syntax.
-
- The Learning Soft-ICE section contains installation instructions, a
- description of the user interface, and a tutorial. The tutorial is
- designed to get you up and running quickly.
-
- The Commands section describes all of the Soft-ICE commands. The
- command descriptions are organized by functional group with an
- alphabetic index for reference.
-
- The Support Features section covers advanced loading options, symbolic
- and source level debugging, and EMM 4.0 capability.
-
- The Advanced Topics section covers topics such as using Soft-ICE with
- DOS loadable drivers and using Soft-ICE with non-DOS operating
- systems.
-
- Throughout the manual, especially in the tutorial and the command
- section, examples are given that require you to give data to Soft-ICE.
- When the directions specify that you "press" a key, such as the key,
- you should press the key labelled. When the directions tell you to
- "enter" a phrase, such as WIN, you should type in the specified
- letters, then press the ENTER key.
-
- 01.03 System Requirements
-
- Soft-ICE works with the IBM Series II Model 70 and 80, Compaq 80386
- and 80386SX computers, AT compatible and 80386 co-processor cards.
- Soft-ICE will only work with 80386 XT co-processors if they are AT
- compatible.
-
- Soft-ICE works best with extended memory, but works fine with
- conventional memory systems.
-
- Soft-ICE does not use DOS or ROM BIOS for its video output and
- keystroke input. Therefore the video must be compatible with one of
- the following: MDA, Hercules, CGA, EGA, or VGA. Soft-ICE also has
- support for a two- monitor configuration, which can be very helpful
- when debugging video- intensive programs.
-