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BASCOM   EXE     52560   7-17-85   1:56p
BCOM10   LIB    154624   7-17-85   1:56p
BRUN10   LIB      3072   7-17-85   1:56p
BRUN10   EXE     58388   7-17-85   1:56p
GWCOM    OBJ      2782   7-17-85   1:56p
GWCASS   OBJ      2099   7-17-85   1:56p
SMALLERR OBJ       246   7-17-85   1:56p
REMLINE  BAS     12591   7-23-85   9:33a
CALL     BAS       612   4-12-85   5:53p
README   DOC      7206   7-23-85   9:35a
COMMAND  BAS       659   4-04-85   4:06p
DEFFN    BAS       336   3-07-85   3:04p
MAIN     BAS       180   7-11-85   6:45p
DIGIT    BAS       217   7-11-85   6:46p
SUB      BAS       349   4-01-85   6:58p
DEC      BAS       236   7-11-85   6:46p
DRAW     BAS       681   4-19-85   4:03p
PLAY     BAS       192   3-21-85   1:08p
REDIM    BAS       439   4-13-85   3:15p
SHARED   BAS       629   4-01-85   1:54p
LINK     EXE     43642   3-11-85   8:06p
       21 file(s)     341740 bytes
                        8192 bytes free

MICROSOFT
QuickBASIC Compiler
README.DOC

July 18, 1985


The following file contains information in addition to the
Microsoft QuickBASIC Manual.

The following files are on your QuickBASIC diskette:

Compiler Files:

BASCOM   EXE    The QuickBASIC Compiler
BCOM10   LIB    The QuickBASIC Compiler Library
BRUN10   EXE    The QuickBASIC Runtime
BRUN10   LIB    The QuickBASIC Runtime Library
LINK     EXE    The Microsoft Linker
GWCASS   OBJ    Object module for cassette support
GWCOM    OBJ    Object module for communications support
SMALLERR OBJ    Object module for producing small error
                messages, and therefore, a smaller EXE file

README   DOC    This information file


Demonstration Files:  The following examples have been
placed on the disk for your convenience.  These examples are
identical to the examples in chapter 9 of the manual, under
the sections headed by the statement/function noted.

CALL     BAS    This demonstrates the use of the CALL
                statement

COMMAND  BAS    This shows the use of the COMMAND$ function

DEFFN    BAS    This shows the use of DEF FN in multi-line
                functions

MAIN     BAS    This example, combined with DIGIT.BAS and
                DEC.BAS show the use of the CHAIN statement
                as well as COMMON variables

DIGIT    BAS    See MAIN.BAS
DEC      BAS    See MAIN.BAS

SUB      BAS    This shows the use of SUB..SUB END/SUB EXIT
                to create named subroutines

DRAW     BAS    This shows the use of the DRAW statement

PLAY     BAS    This shows the use of the PLAY statement

REDIM    BAS    This shows the use of the REDIM statement
                with dynamic arrays and ERASE

SHARED   BAS    This shows the use of SHARE statement in
                named subroutines with shared variables

REMLINE  BAS    This program is designed to take programs
                written for a Microsoft BASIC Interpreter
                and remove the unreferenced line numbers
                for use with QuickBASIC.  REMLINE assumes
                that the program is syntactically correct.

GENERAL NOTES:

- QuickBASIC can read Microsoft Word formatted files.  For
those users of QuickBASIC who own Microsoft Word,
you can use Word to edit your programs.  There is no need to
save the file non-formatted, as QuickBASIC will disreguard
any formatting information and compile the program.

- if you are using the runtime library and either cassette or
communications support, you must link in either
GWCASS.OBJ (for cassette support) or GWCOM.OBJ (for
communications support).

- If you are using the LOCK or  UNLOCK statements, or the
LOCK type clause in the OPEN statement , you should
be aware that they will only function at runtime if you are
using MS-DOS 3.00 or higher.  The code will be compiled,
however, if you are using a DOS below 3.00 you will receive
an ADVANCED FEATURE runtime ERROR if either a LOCK or an
UNLOCK is performed.

If you are using MS-DOS 3.00 you must run the SHARE
program to perform any locking operation.


ADDITIONS TO THE MANUAL:

OPEN STATEMENT:

The compiler fully supports the syntax of the IBM BASICA 3.00
interpreter OPEN statement. The functionality of the OPEN statement
has been enhanced to control access to opened files in a
network environment. The new, expanded syntax is:

OPEN "<filespec>" [FOR <mode>][ACCESS <access>]
    [<locktype>] AS [#] <filenum> [LEN=<record length>]

<mode> specifications may now include the RANDOM keyword.

When no <mode> is specified, RANDOM file mode is assumed.
In RANDOM mode, if no ACCESS clause is present, three
attempts are made to open the file when the OPEN
statement is executed. Access is attempted in the
following order:

    1. Read/write

    2. Write-only

    3. Read-only

The ACCESS clause specifies the type of operation to be
performed on the opened file. If the file is already opened
by another process and access of the type specified is
not allowed, the OPEN will fail and a "Permission Denied"
error message is generated.

The ACCESS types are:

READ      Opens the file for reading only.

WRITE          Opens the file for writing only.


READ WRITE     Opens the file for both reading and
        writing. This mode is invalid for all
        except RANDOM files and files opened for APPEND.

The <locktype> clause restricts access by other processes
to an open file. The locktypes are

default      If <locktype> is not specified, the file
            may be opened for reading and
            writing any number of times by this process,
            but other processes are
            denied access to the file while it is opened.

SHARED            Any process on any machine may read from or write
                to this file.

LOCK READ    No other process is granted read access to this file.
            This access is granted only if no other process has
            a previous LOCK READ access to the file.

LOCK WRITE        No other process is granted write access to this
            file.  This also is granted only if no other process
            has a previous access
            of this kind to the file.

LOCK READ WRITE    No other process is granted either read or write
            access to this file. This access is
                granted only if LOCK READ WRITE
            has not already been granted to another process.

OPEN now generates error 70 "Permission Denied", when the
OPEN is restricted by a previous process. Error 70 was
previously "Disk Write Protect." A write protected disk will
still give you an error 70.


SEGMENT MAPS:  Section 8.5

The following entry showed be added to the Segment Maps
found in both tables 8.1 and 8.2.  If you use named
COMMON, the named COMMON segment will be in the segment
table.

In the Low DS section of the tables, after the entry which
looks like:

        BC_DATA               BC_VARS

If named COMMONs are used there will be one entry for each
named COMMON which looks like:

        FOO                   BC_VARS

where "FOO" is the name of the COMMON.