608 lines
26 KiB
Plaintext
608 lines
26 KiB
Plaintext
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Audience
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========
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This program and accompanying databases are designed for the
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intermediate to advanced programmer that knows what he's doing,
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but just can't remember specific information necessary to program
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advanced features of the PC or PS/2. The default distribution is
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comprised of a collection of information found in manufacturer
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technical reference manuals, various commercial books, technical
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topics discussed on CompuServe's technical forums, public domain
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articles and my own snooping, all organized in a single database.
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The help topics include BIOS interrupts, DOS interrupts, DOS
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functions, EMS and Mouse functions, BIOS and DOS data structures,
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diagnostic codes, DOS commands, 80x86 assembler instructions,
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Standard and vendor specific C functions and various hardware
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specifications. The program can also be used as a quick reference
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utility for any collection of text.
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Installation
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============
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This utility requires the following:
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DOS 2.0 or greater
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64K of free RAM
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a hard disk system is recommended
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Installation involves two steps. First, simply dearchive the
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HelpPC.EXE file (may be HelpPC.ZIP or HelpPC.ARC). Second,
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issue the following command:
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SET HLP=d:dirname (no blanks, except between "SET HLP")
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Where 'd:' is the drive and 'dirname' is the directory where the
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help .TXT files exist (this should be fully qualified, with or
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without the trailing '\'). The HelpPC.COM and HelpTsr.COM files
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can exist anywhere they can be accessed through the DOS command
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search path (PATH). The "SET HLP=" command should be placed in
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the AUTOEXEC.BAT file to allow access to HelpPC each time your
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machine is restarted.
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As an example, if the files HelpPC.NDX and the .TXT files reside
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in a directory named C:\HELPPC then use:
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SET HLP=C:\HELPPC
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or
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SET HLP=C:\HELPPC\
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The name HelpPC was chosen to avoid conflict with the HELP command
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available with some OEM versions of DOS. I'd recommend that you
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rename HelpPC.COM to a name you find convenient and easy to remember
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such as "H.COM", "HELP.COM" or "INFO.COM".
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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The HelpPC utilities work with various TSR's resident, but as with
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all TSR's there's always the possibility of conflict. If you find
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a problem please pass along as much information as you can to me via
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the address listed below.
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Background
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==========
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As programmers, we tend to gather massive amounts of books,
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journals and magazines. Each of these items have some important
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detail that is generally out of our reach since we can't carry
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them with us everywhere we go. That's why I started this project,
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to free myself from having to first find the manuals or articles
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and then weed through all the mundane text to get to an answer.
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In the past few years HelpPC has saved me a lot of time previously
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spent rummaging through manuals.
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HelpPC initially began somewhere around 1985 when I decided that
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I spent way too much time searching for the same information over
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and over again. At that time my primary references were David
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Powell's BIOS & DOS quick reference cards and Peter Norton's
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"Programmers Guide to the IBM PC". I generated an indexed help
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file from David Powell's original work and slowly added information
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to each topic. The result of several years work is no longer a
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duplicate of David's fine work but a complete database of PC
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technical topics. Each time I had to look up a new PC related
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topic, I made a note that it should be added to the database. As
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time passed the database grew more and more complete and I found
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little need to look to other sources for information. I then began
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adding information people were requesting in messages on CompuServe's
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IBMPRO, BPROGB, MSSYS (now MSLANG and MSOPSYS), CLMFORUM and IBMCOM
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forums. The database is forever growing with each new feature and
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specification made available.
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All information included within HelpPC has been confirmed against
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available sources. The comparison of information usually progressed
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along the same paths. Initially Norton's "Programmers Guide to the
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IBMPC" and Duncan's "Advanced MS-DOS" were the two sources I turned
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to for verification. Later I began using Dettemann and Kyle's "DOS
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Programmers Reference", Thom Hogan's "The Programmers PC Sourcebook",
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and the "MS-DOS Encyclopedia". When something wasn't covered well
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in any of these references or there was a discrepancy, I turned to
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the "IBM PC/XT Technical Reference Manual" , the "IBM PC/AT Technical
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Reference Manual" and the "DOS Technical Reference Manual". All
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hardware specific information is verified with the respective vendor's
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technical specification manuals.
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Credit is given to the sources if any of their data is included
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in HelpPC (see topic Bibliography for a listing). One note I
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should make clear is that the information on many of the topics
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appears as if it were straight out of Norton, Duncan, Dettemann
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or from Ralf Brown's interrupt list. These and many other sources
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were referenced but none of the material is plagiarized and any
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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similarity is due to the nature of the material. If you compare
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any of the aforementioned references, they all contain approximately
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the same data in very similar formats.
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The main program is a quick reference utility that allows quick
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viewing of the help database from the DOS command line. The program,
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which is approximately 10K in size, is written in C with a little
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assembler sprinkled in for speed/size optimization. A 43 and 50
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line mode is supported for those that like to squint. A TSR version
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is also included with this release which has several enhancements
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over the command line utility. These include dual monitor support
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and context sensitive help (see below for more information).
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HelpPC Command Line Usage
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=========================
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The command line version of HelpPC has three modes of operation.
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At first the most useful will be the menu driven interface that
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allows you to point and shoot at your topic. Entering HelpPC
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without a command line puts you in menu mode. The second mode is
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the command line mode which allows you to specify the text to
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search for on the command line. The third mode is available from
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either of the two other modes and prompts you for information.
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Prompted mode becomes the default after using the command line
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mode. To switch between prompted mode and menu mode, use the
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F1 key. Here's a list of the navigational keys:
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Esc Exit current screen or HelpPC
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End Moves text or menu to the last line/item
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Home Moves text or menu to the first line/item
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PgUp Moves text or menu to page top or previous page
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PgDn Moves text or menu to page bottom or next page
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F1 Switches from menu to prompting mode and vice versa
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Alt-P Write current topic to printer. HelpPC has builtin error
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detection for normal printers but if LPT1 is redirected to
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a serial printer the system may hang until the printer is
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ready. This is an undesirable though common behavior with
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DOS and serial printers.
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Alt-W Write text to file HelpPC.DAT in the current directory
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Alt-X Exit HelpPC and without clearing current screen
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Tab Move to next subtopic link (Right Arrow also)
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BackTab Move to previous subtopic link (Left Arrow also)
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Enter Jump to highlighted subtopic link
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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HelpTSR Usage
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=============
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HelpTSR is a popup utility similar to the HelpPC utility. The
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following is a list of additional features found in HelpTSR:
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1. Supports context sensitive help within editors such as Brief,
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Epsilon, Fastwrite, Microsoft Editor, Norton Editor, PC-Write,
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PWB, Qedit, dBASE and many other editors. This means you can
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position your cursor on a text item and HelpPC will popup with
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information on the topic if it's available. This is very useful
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when editing source code and you need to know how to use a
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function or command. An example would be while editing an
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assembler file, you need to know what flags are affected by an
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"ADC" instruction. You just position your cursor on the "ADC"
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instruction and press the hot keys. Help information for the
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"ADC" instruction is displayed. Epsilon and the Norton Editor
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may require special setup for the HelpTSR to popup (see notes
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below). This feature can be disabled via the /M option.
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2. Supports single or dual monitor systems (1 Color and 1 Mono).
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On dual monitor systems you can get popup help on the alternate
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monitor without disturbing your current screen. Dual monitor
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support frees 4k of memory since the video screen isn't saved.
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3. Supports alternate popup key sequences to avoid conflict with
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other TSR's and buggy keyboard BIOS's.
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4. Has a similar interface to the command line version but with
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options to customize the behavior during popup.
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5. Supports TSR removal to free RAM.
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6. Supports command line options to control the behavior when the
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TSR pops up. An example would be whether to popup in menu or
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prompted mode or to disable context sensitive help.
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7. Network compatible so several people can view the databases at
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one time.
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8. Requires only 32K (28K if dual screen support is used). The
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size of the resident memory varies depending on the size of the
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index. The default distribution, requires 37K to maintain 1350
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topics on a single monitor system. This can also be trimmed
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down by removing unneeded topics from the default help files.
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9. Capable of being loaded high to conserve low DOS memory using
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one of the 386 memory managers or DOS 5.0's LOADHIGH command.
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10. The alternate monitor is blanked after 10 minutes to preserve
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the screen. This feature can be disabled via the /B option.
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11. Integrity checking to safeguard against unruly code often
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found in development environments. Before popping-up HelpTSR
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checksums its internals and refuses to popup if corrupted by
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another program or stray pointer. If another program stomps
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on memory owned by HelpTSR, it may have also destroyed other
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vital areas within the system which could lead to severe
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problems. It is recommended that you reboot the system
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should this occur. This is a safety measure added to HelpTSR
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to improve confidence in these environments. HelpTSR sounds a
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long tone when this condition is detected.
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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If the data files are changed or reindexed after HelpTSR is resident,
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HelpTSR must be unloaded from memory (/U option) and then reloaded.
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This is because HelpTSR maintains checksum information on the help
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index when it is loaded. If the data or index files change these
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checksums will no longer be valid.
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Here's how to use HelpTSR from the command line:
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HelpTSR [options]
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Where "options" is zero or more of the following:
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/? list this help information. If other options are supplied
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also, they are ignored.
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/B disable alternate monitor blanking. When dual monitor support
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is chosen, the alternate monitor is blanked if the help screen
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is stagnant for over 10 minutes. Although this option is
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available, it's usually a good idea to allow the alternate
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monitor blanking to avoid monitor burn in.
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/D dual monitor support. If two monitors are available, the
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alternate monitor can be used to display the help text.
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This avoids disruption of the active display. The screen
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is blanked after 10 minutes if the HelpPC screen is stagnant.
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This will not blank a screen under the control of another
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program such as a debugger.
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/M menu mode as default. This option forces HelpTSR to display
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the main menu and ignore any context sensitive help. Prompted
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mode is available if requested via the F1 key.
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/P prompted mode as default. This option forces HelpTSR to come
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up in prompted mode if no current word context is supplied.
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Normally HelpTSR will popup in menu mode in this situation.
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Menu mode is available if requested via the F1 key.
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/U unload HelpPC and free memory. This option overrides all
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other options except /?. All other options are ignored as
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HelpTSR will attempt to remove itself. If another resident
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program has hooked HelpTSR's interrupt vectors, HelpTSR will
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not unload and displays a message indicating this condition.
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/1 use Ctrl-Shift-H to popup instead of Alt-Left-Shift-H. Some
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Tandy 1000's have an Alt Key BIOS bug which requires changing
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the popup hotkey.
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/2 use Ctrl-Kp5 to popup instead of Alt-Left-Shift-H
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/3 use Ctrl-Shift-Kp5 to popup instead of Alt-Left-Shift-H
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/4 use Alt-Shift-F1 to popup instead of Alt-Left-Shift-H
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Other Utilities
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===============
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Also included are two command files INDEXHLP.COM and BUILD.BAT.
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INDEXHLP.COM is the file index utility. Usage is very simple;
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you just include the files you plan to index on the command line.
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Issuing the INDEXHLP command gives instructions on usage. BUILD.BAT
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is a batch file provided to simplify use of INDEXHLP. It preset to
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index the default databases in the distribution and allows you to
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specify your own additional databases. BUILD without parameters
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indexes only the default databases. If any file names are supplied,
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they are also indexed. Here's an example:
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BUILD
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is equivalent to
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INDEXHLP asm c dos hardware interrupt tables misc
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Both of these command lines will index the default databases. To
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add additional databases just append the filename (extension isn't
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necessary if .TXT is used) to the list. Here's an example:
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BUILD custom
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is equivalent to
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INDEXHLP asm c dos hardware interrupt tables misc custom
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Creating your own Help Files
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============================
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HelpPC in its standard form can handle 1800 indexed topics and 16
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independent help files. If you find you need a larger capacity,
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please contact me at one of the addresses below. Each file must
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have its own title which will show up in the main menu. Each topic
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following the file title (see below) will show up in the subtopic
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menu. Note that HelpPC will adjust the menu format based on the
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screen height and the number of items in the main menu.
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HelpPC text files are simple ASCII files that contain control codes
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in column one. Each file must contain a menu title in the first
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line. The remainder of the file consists of keyed lines and help
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text. Each line must end with a CR/LF pair (standard DOS format) and
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shouldn't be longer than 79 characters. Tabs position the text at
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8 character tab positions. The following is a list of keys and
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special characters (keys are found in column 1, special characters
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appear in columns 1-80):
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'@' in column 1 indicates a file title which will appear in
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the main topic menu. This must be the very first line
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in the file and has a maximum length of 40 characters
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(excluding the '@').
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':' in column 1 indicates a subtopic key. Multiple keys separated
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by colons ':' can be entered on the same line. Single spaces
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are allowed in a key, multiple spaces are compressed to single.
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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'%' in column 1 indicates a highlighted title line.
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'^' in column 1 indicates a centered highlighted title.
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' ' (space) in column 1 indicates normal text.
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'~' Tilde is used to mark text as a subtopic link. Use two
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tilde characters to represent an actual tilde in the data.
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A word or phrase enclosed between tilde's will become a
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subtopic link for the current topic.
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TAB in column 1 starts text in column 9
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any other character in column 1 is truncated
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Use the BUILD command to index/reindex the default help text files.
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To add your own files to the index use the command:
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BUILD [fname [file2 ...]]
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This information is available in HelpPC with the topic
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"HELPPC FORMAT".
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Limits of the HelpPC program
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============================
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Max items in main topic menu: 16
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Max items in subtopic menu: 512
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Max topics in index: 1800
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Max size of topic text: 16384 bytes
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Max lines of text per topic: 512 lines
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Max topic key length: 20 bytes
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Max file title length: 40 bytes
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No limit on file size
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Special Editor Considerations
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=============================
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With Epsilon, you must setup a TSR popup key. This is done by
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issuing the "program-keys" command and choosing one of the hotkey
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options [1..4]. Option 4 is the default popup key sequence for
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HelpTSR. Quit from the menu using 'Q' and then issue the
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"write-state" command to make the configuration permanent.
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The Norton Editor may need configured on a few video systems,
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though there is no rule to determine which. If you try to popup
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HelpTSR while in the Norton Editor and the context sensitive help
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does not work, then the editor is not using a real cursor (may be
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using reverse video). To configure the Norton Editor in this
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situation, do the following:
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F5 Format Menu
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C Select cursor type (change to a blinking cursor)
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F3 File Menu
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S Save Modified Editor configuration (it will prompt
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you for the filename)
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Miscellaneous Notes
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===================
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If the HelpPC program is used in a batch file, the parameters to it
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must not be variable parameters (%0..%9), because DOS strips out
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commas when it parses batch file parameters. Commas are valid in
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topics and if removed by the command parser will change the command
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line presented to HelpPC. This usually results in the "Topic not
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found in index" message.
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HelpTSR works in MS Windows DOS sessions. If HelpTSR is loaded before
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MS Windows, HelpTSR is available in any following DOS windows. If
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HelpTSR is loaded from with a DOS window, it is active until the
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window is destroyed. HelpTSR will not popup over a graphics screen.
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43/50 Line users
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================
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Some versions of DOS and ANSI.SYS replacements do not handle 43/50
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line mode correctly. If the bottom half of the display does not
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scroll correctly in 43/50 line mode, either upgrade to a newer DOS
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or set 43/50 line mode through a program like NANSI.SYS. This is a
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problem in some DOS versions and not HelpPC.
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Files included with HelpPC
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==========================
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BUILD.BAT - A batch file that uses INDEXHLP to rebuild the
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help index. This is the simplest way to index
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the databases.
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HELPPC.COM - A display utility that reads the index and databases
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and displays the information. I recommend that you
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rename this program to something you find convenient
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to use like "H.COM", "HELP.COM" or "INFO.COM". I
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prefer "HELP.COM", which conflicts with the DOS HELP
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command that is supplied with some OEM versions of
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MS DOS.
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HELPPC.DOC - The file you're reading now.
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HELPPC.NDX - The data index. Contains index information on data
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in each of the .TXT files. HelpPC finds this file
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through the environment variable "HLP".
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HELPTSR.COM - Context sensitive help TSR. The program interface
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is similar to the command line utility HELPPC.COM
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but has advance features.
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INDEXHLP.COM - The help file index utility. Type INDEXHLP for
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information on usage.
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README - A brief description of how to get started.
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REGISTER.FRM - A registration form. This is also included with the
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registered versions should one choose to redistribute
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HelpPC.
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Data Files:
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ASM.TXT - Assembler programming topics.
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C.TXT - ANSI, Microsoft and Turbo C functions and C
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programming topics. This may be split into
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C.TXT, MSC.TXT and TC.TXT in future releases of
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HelpPC.
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DOS.TXT - DOS commands database.
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HARDWARE.TXT - Hardware relative programming topics.
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INTERRUP.TXT - Documented and undocumented interrupt topics.
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MISC.TXT - Miscellaneous topics that have no logical grouping.
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TABLES.TXT - Tables, structures and formats of BIOS, DOS and other
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programming related tabular information.
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Version News
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============
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2.10 Added subtopic linking, tab support, 486 instructions and timings.
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2.0 Major revision of the user interface including menus. This is
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the first shareware release. Help index utility is included
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and TSR becomes available with registration. Some versions
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went out with David Powell referenced as David Wilson. This
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was an error and I apologize to David Powell for this accident.
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1.5 A minor bug in the 43/50 line mode of version 1.4 has been
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fixed. Over 900 topics are now included.
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1.2 EMS and Mouse functions were added to the database. Over 750
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topics were included. (limited distribution)
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1.1 Maintenance release of the database. Several topics were added
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and existing ones were cleaned up.
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1.0 Original release.
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Registration
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============
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This software is shareware. If you find this program or accompanying
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data of some value and continue to use either after a 30 day trial
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period registration is required. Registration costs $25 in the
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United States ($30 otherwise) and provides you with the latest
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version of the program and the databases. It also places you on the
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update mailing list. Registration provides the resources to continue
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work on HelpPC. A registration form is included in the file
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REGISTER.FRM. This file is enclosed with the registered version also
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to make it easier to distribute HelpPC to friends and colleagues.
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Here's the pricing schedule for HelpPC.
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Number of copies Price per copy
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1 $25 per diskette
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2-5 $20 per diskette
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6+ $15 per diskette
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$5 per upgrade (any version)
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Add $5 for addresses outside the U.S.
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Thanks to the following:
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========================
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David Powell of IBM for his BIOS/DOS reference cards which gave me
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the idea that started all of this. Jeff Miller of CompuServe for
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supporting the project and providing helpful feedback. Mark Grim,
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Bernd Schemmer and Robert Rosenbach for entering/passing along data
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for HelpPC. Phil George and Ted Stephens for supporting and testing
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|
throughout the project cycle. Dave Drown, Jerry Gibson, Kevin Hughes,
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Charles Lazo III, Jim Milligan, David Powell (of CCS) and Ali Vardag
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for testing and/or providing feedback. Ray Duncan, Chris Dunford,
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Richard K. Herzog, Jim Kyle, Micheal Mohle, Chip Rabinowitz, Mike
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|
Rubenstein and Barry Simon for sharing their vast knowledge with the
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rest of us on CompuServe. Ralf Brown for maintaining "the" interrupt
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lists. Brett Salter and The Periscope Company for the great support
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and the awesome Periscope debugger which was the main bug buster used
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in writing HelpPC.
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In Closing
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==========
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Use it, try to break it or just tell me what you did or didn't
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like about it or what you'd like to see added. If you find any
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discrepancies, errors or typos, I would appreciate corrections
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and any suggestions for improvement. If at all possible,
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please contact me using one of the below addresses and I will
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try to correct the problem immediately. Additions to the help
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files are welcome and can be submitted to me via any of the
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following addresses. If the information you provide is used in
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HelpPC, you will be given credit for the work.
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Please share this program with your friends; but please, if you
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do redistribute this software, distribute it in its original
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.ARC, .ZIP or LHARC form, without modification. If you think
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it's a worthwhile program, please register. Your registrations
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will allow continued development on HelpPC.
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I can be reached at any of the following addresses:
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US Snail: David Jurgens
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1550 Alton Darby Creek Road
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Columbus, Ohio 43228
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CompuServe: 70004,30 (read daily)
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71270,2422 (read weekly)
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HelpPC 2.10 Quick Reference Utility Copyright (c) 1991, David Jurgens
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Disclaimer
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==========
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The program contained herein, in its original form, is designed
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to work with PC's which are completely IBM DOS and IBM BIOS
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compatible and has been tested on a myriad of PC's and compatibles.
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The information contained within the help databases is correct to
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the best of my knowledge and ability. Since it was compiled from
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various sources, some in complete disagreement and some continually
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changing specifications, I cannot be responsible for omissions,
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inaccuracies or plain errors of any type.
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I make no claims to value of the enclosed programs or files,
|
|
or their behavior and assume no liability for damages either
|
|
from the direct use of this product or as a consequence of the
|
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use/misuse of this product. Hence this program and all
|
|
information contained within SHOULD BE USED AT ONE'S OWN RISK.
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This disclaimer is included to absolve me from legal issues
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brought about by today's litigious society.
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