diff --git a/Microsoft Fortran v41/410500001-400_R06-0187_Microsoft_FORTRAN_4.0_198701 - converted.pdf b/Microsoft Fortran v41/410500001-400_R06-0187_Microsoft_FORTRAN_4.0_198701 - converted.pdf
new file mode 100644
index 0000000..1cbe71f
Binary files /dev/null and b/Microsoft Fortran v41/410500001-400_R06-0187_Microsoft_FORTRAN_4.0_198701 - converted.pdf differ
diff --git a/Microsoft Fortran v41/BIN/BIND.EXE b/Microsoft Fortran v41/BIN/BIND.EXE
new file mode 100644
index 0000000..1418293
Binary files /dev/null and b/Microsoft Fortran v41/BIN/BIND.EXE differ
diff --git a/Microsoft Fortran v41/BIN/CV.EXE b/Microsoft Fortran v41/BIN/CV.EXE
new file mode 100644
index 0000000..c9e57c0
Binary files /dev/null and b/Microsoft Fortran v41/BIN/CV.EXE differ
diff --git a/Microsoft Fortran v41/BIN/CV.HLP b/Microsoft Fortran v41/BIN/CV.HLP
new file mode 100644
index 0000000..60eb588
Binary files /dev/null and b/Microsoft Fortran v41/BIN/CV.HLP differ
diff --git a/Microsoft Fortran v41/BIN/CVPACK.EXE b/Microsoft Fortran v41/BIN/CVPACK.EXE
new file mode 100644
index 0000000..612a32d
Binary files /dev/null and b/Microsoft Fortran v41/BIN/CVPACK.EXE differ
diff --git a/Microsoft Fortran v41/BIN/ERROUT.EXE b/Microsoft Fortran v41/BIN/ERROUT.EXE
new file mode 100644
index 0000000..8a97fa5
Binary files /dev/null and b/Microsoft Fortran v41/BIN/ERROUT.EXE differ
diff --git a/Microsoft Fortran v41/BIN/EXEC.EXE b/Microsoft Fortran v41/BIN/EXEC.EXE
new file mode 100644
index 0000000..93176b7
Binary files /dev/null and b/Microsoft Fortran v41/BIN/EXEC.EXE differ
diff --git a/Microsoft Fortran v41/BIN/EXEHDR.EXE b/Microsoft Fortran v41/BIN/EXEHDR.EXE
new file mode 100644
index 0000000..a87013a
Binary files /dev/null and b/Microsoft Fortran v41/BIN/EXEHDR.EXE differ
diff --git a/Microsoft Fortran v41/BIN/EXEMOD.EXE b/Microsoft Fortran v41/BIN/EXEMOD.EXE
new file mode 100644
index 0000000..72e6f9c
Binary files /dev/null and b/Microsoft Fortran v41/BIN/EXEMOD.EXE differ
diff --git a/Microsoft Fortran v41/BIN/EXEPACK.EXE b/Microsoft Fortran v41/BIN/EXEPACK.EXE
new file mode 100644
index 0000000..79af609
Binary files /dev/null and b/Microsoft Fortran v41/BIN/EXEPACK.EXE differ
diff --git a/Microsoft Fortran v41/BIN/F1.ERR b/Microsoft Fortran v41/BIN/F1.ERR
new file mode 100644
index 0000000..decc834
--- /dev/null
+++ b/Microsoft Fortran v41/BIN/F1.ERR	
@@ -0,0 +1,428 @@
+G
+W
+4
+0
+0
+maximum memory-allocation size exceeded
+program too large for memory
+%s : array bound used function call
+%s : array bound used intrinsic call
+%s : array bound used array reference
+%s : array bound used illegal variable
+%s : array bound used illegal variable
+%s : already dimensioned
+%s : array bounds missing
+%s : more than 7 array bounds
+%s : attributes illegal on array bounds
+%s : * : not last array bound
+%s : bound size too small
+%s : adjustable-size array not in subprogram
+%s : NEAR array bigger than segment
+%s : %s attribute repeated
+%s : %s illegal with attributes specified in same list
+%s : %s attribute mismatch with earlier NEAR/FAR/HUGE
+%s : %s illegal with attributes specified in earlier list
+%s : NEAR/FAR/HUGE attribute mismatches default
+%s : %s illegal on COMMON statements
+%s : %s illegal on formal arguments
+%s : %s illegal on ENTRY statements
+%s : %s illegal on subprogram statements
+%s : %s illegal on variable declarations
+%s : %s illegal on type declarations
+%s : language attributes illegal on formal arguments
+%s : %s only legal on formal arguments
+%s : illegal bound type
+%s : bound not integer
+%s : substring on noncharacter item
+%s : upper substring bound exceeds string length
+%s : lower substring bound exceeds upper bound
+%s : lower substring bound not positive
+concatenation with CHARACTER*(*)
+cannot pass CHARACTER*(*) by value
+label %ld : redefined in program unit
+no ASSIGN statements for assigned %s
+IF or ELSEIF missing
+expression type not LOGICAL
+statement stack underflow
+statement-nesting limit exceeded
+label %ld : used across blocks
+no assigned GOTO or FMT= for ASSIGN statement
+ASSIGN target not an INTEGER variable
+%s : ASSIGN : variable not INTEGER
+%s : ASSIGN : too many INTEGER*1 variables
+DO-loop expression not INTEGER or REAL
+zero illegal as increment
+DO-loop variable : not a variable
+%s : illegal use of active DO-loop variable
+DO-loop variable not INTEGER or REAL
+ENDIF missing
+DO-loop label %ld : not seen
+IF, ELSEIF, or ELSE missing
+too many assigned GOTO statements
+only variables allowed in assigned GOTO statements
+assigned GOTO variable not INTEGER
+computed GOTO variable not INTEGER
+expression type not INTEGER or REAL
+illegal statement after logical IF
+label %ld : previously used as FORMAT label
+label %ld : previously used as executable label
+block label %ld : must not be referenced
+label %ld : must not be referenced
+DO-loop label %ld : out of order
+assigned and unconditional GOTO illegal here
+block and arithmetic IF illegal here
+statement illegal as DO-loop termination
+%s : maximum of 5 digits
+%s : illegal expression
+%s : EQUIVALENCE : enclosing class too big
+%s : COMMON : attributes on items illegal
+%s : EQUIVALENCE : formal argument illegal
+%s : EQUIVALENCE : not array
+%s : EQUIVALENCE : array subscripts missing
+%s : EQUIVALENCE : nonconstant offset illegal
+%s : EQUIVALENCE : nonconstant upper substring expression ignored
+%s : nonconstant lower substring expression illegal
+%s : COMMON : length specification illegal
+%s : %s : %s name illegal
+%s : %s : preinitialization illegal
+%s : %s : formal argument illegal
+%s : %s : not an array or variable
+%s : COMMON : character and noncharacter items mixed
+%s : COMMON : too big
+%s : COMMON : array size nonconstant or zero
+%s, %s : EQUIVALENCE : character and noncharacter items mixed
+%s, %s : EQUIVALENCE : both in blank common block
+%s, %s : EQUIVALENCE : both in common block %s
+%s, %s : EQUIVALENCE : in different common blocks
+%s : EQUIVALENCE : extends blank common block forward
+%s : EQUIVALENCE : extends common block %s forward
+%s, %s : EQUIVALENCE : conflicting offsets
+%s : EQUIVALENCE : two different common blocks
+%s : item in common block crosses segment
+%s : COMMON : size changed
+%s : NEAR common block has HUGE item
+blank common can not be HUGE
+%s : COMMON : too big to be NEAR
+%s : COMMON : function or subroutine name
+%s : already in COMMON
+%s : EQUIVALENCE : needs at least two items
+DATA : iteration count not positive
+%s : DATA : illegal address expression
+%s : cannot initialize formal argument
+%s : cannot initialize item in blank common block
+%s : can only initialize common block in BLOCK DATA subprogram
+%s : DATA : not array or variable
+%s : repeat count not positive integer
+%s : DATA : nonconstant item in initializer list
+%s : DATA : too few constants to initialize item
+%s : nonstatic address illegal in initialization
+%s : bound or increment not constant
+%s : bound or increment not INTEGER
+%s : DATA : zero increment
+%s : DATA : active implied-DO variable
+%s : DATA : implied-DO variable not INTEGER
+%s : DATA : not array-element name
+DATA : too few constants to initialize names
+DATA : more constants than names
+%s : already declared %s
+%s : illegal use of %s
+%s : already typed
+%s : types illegal on BLOCK DATA/COMMON/PROGRAM/SUBROUTINE
+%s : cannot initialize in type statements
+DOUBLE PRECISION : length specifier illegal
+%s : IMPLICIT : only single letter allowed
+%c, %c : IMPLICIT : lower limit exceeds upper limit
+%c : already IMPLICIT
+%s : INTRINSIC : unknown name
+%s : PARAMETER : nonconstant expression
+too many symbols
+%s : declared with wrong type
+%s : intrinsic function illegal as actual argument
+LEN : illegal expression
+%s : multiple arguments
+%s : cannot convert FAR address to NEAR
+%s : cannot convert to %s
+%s : incorrect use of intrinsic function
+%c : illegal separator
+%s : cannot open include file
+octal value too big for byte
+closing quote missing
+CHARACTER constant too long
+zero-length CHARACTER constant
+empty escape sequence
+integer string too long
+alternate bases illegal
+illegal base value
+INTEGER constant must follow #
+illegal REAL constant
+%s : include file nested too deeply
+INTEGER value overflow
+FORMAT string too long
+missing ] following attribute string
+%s : attribute repeated
+colon expected following ALIAS
+opening quote missing
+unrecognized attribute
+%s : name too long; truncated
+%s : already specified in $%sLARGE
+$DEBUG:'<debug-list>' illegal with $FREEFORM
+%c : nonalphabetic character in $DEBUG ignored
+$DEBUG:'<debug-list>' : string expected
+$DECMATH not supported
+$INCLUDE:'<filename>' : string expected
+$%sSIZE : integer constant out of range
+$%sSIZE:<integer constant> : integer constant expected
+$%sLARGE already set
+$%sLARGE illegal in executable statements
+$MESSAGE:'<message>' : string expected
+$STORAGE:<number> : 2 or 4 expected
+$SUBTITLE:'<subtitle>' : string expected
+$TITLE:'<title>' : string expected
+unrecognized metacommand
+metacommand already set
+metacommand must come before all FORTRAN statements
+characters following metacommand ignored
+Hollerith constant exceeds 1313 characters
+zero-length Hollerith constant
+Hollerith constant : text length disagrees with given length
+Hollerith not allowed
+%s : non-FORTRAN character
+%s : error closing file
+illegal label field
+zero-value label field
+free-form label too long
+label on continuation line
+first statement line must have ' ' or '0' in column 6
+too many continuation lines
+label on blank line
+illegal %s flag, would overwrite %s with %s
+too many %s flags, %s
+%s : unknown option (%c)
+%s : illegal number in switch
+illegal command-line option
+out of disk space for compiler internal file
+write error on compiler internal file
+%s : cannot open file
+%s : name too long
+cannot open internal files
+-4Y and -4N : both options used for argument
+-4Y and -4N : both options used; -4Y assumed
+syntax error
+END missing
+%s : unrecognized option
+-4I2 or -4I4 expected
+illegal -A option
+-W%d : illegal warning level ignored
+program too large for memory
+RETURN : integer or character expression required
+%s : alternate RETURN missing
+%s : DIMENSION : not array
+statement illegal with INTERFACE
+statement illegal in INTERFACE
+statement illegal in BLOCK DATA
+%s : formal argument not local variable
+%s : formal argument not a variable
+%s : repeated in formal-argument list
+%s : statement function already declared
+%s : statement function : too few actual arguments
+%s : statement function : too many actual arguments
+%s : formal argument %s : never used
+%s : formal argument %s : subprogram passed by VALUE
+%s : formal argument %s : symbol-class mismatch
+%s : language attribute mismatch
+%s : type redefined
+%s : length redefined
+%s : NEAR/FAR attribute mismatch
+%s : VARYING attribute mismatch
+%s : previously called near
+%s : previously called far
+%s : defined with different number of arguments
+%s : formal argument %s : Hollerith passed to CHARACTER formal argument
+%s : formal argument %s : VALUE/REFERENCE mismatch
+%s : formal argument %s : NEAR/FAR/HUGE mismatch
+%s : formal argument %s : previously passed by value, now by reference
+%s : formal argument %s : previously passed by reference, now by value
+%s : formal argument %s : previously passed with NEAR, now with FAR or HUGE
+%s : formal argument %s : previously passed with FAR or HUGE, now with NEAR
+%s : formal argument %s : CHARACTER *(*) cannot pass by value
+%s : formal argument redefined
+%s : illegal as formal argument
+%s : formal argument previously initialized
+%s : EQUIVALENCE : formal argument illegal
+ENTRY : formal argument %s : attribute %s : mismatch
+alternate RETURN only legal within SUBROUTINE
+ENTRY seen before FUNCTION or SUBROUTINE
+ENTRY not in function or subroutine
+too many PROGRAM statements
+%s : formal argument used as ENTRY
+%s : PROGRAM : name redefined
+%s : used or declared before ENTRY
+%s : subprogram used or declared before INTERFACE
+%s : already defined
+%s : already used or declared with different symbol class
+%s : ENTRY : CHARACTER lengths differ
+%s : ENTRY : CHARACTER and non-CHARACTER types mixed in ENTRY statements
+too many ENTRY statements
+%s : INTERFACE : not formal argument
+%s : assumed-size array : cannot pass by value
+%s : adjustable-size array : cannot pass by value
+statement out of order or END missing
+statement out of order
+no state transition for root of tree
+%s : truncated to 6 characters
+%s : not previously declared
+label %ld : undefined
+%s : FUNCTION : return variable not set
+%s : assumed-size array : not reference argument
+%s : adjustable-size array : not reference argument
+%s : CHARACTER*(*) type illegal
+%s : VARYING illegal on symbol class
+%s : $ illegal in C name
+%s : illegal length
+value %ld : INTEGER : range error
+integer constant expression expected
+length specification illegal
+length %ld : illegal type length
+only C attribute legal on INTEGER type
+attributes illegal on non-INTEGER types
+DOUBLE PRECISION : length specifier illegal
+illegal use of Hollerith constant
+illegal type conversion
+cannot convert between CHARACTER and non-CHARACTER constants
+cannot convert type to %s
+unknown primitive type
+missing symbol reference
+unknown constant type
+%s : subscript %ld out of range
+%s : subscript %ld out of range
+%s : subscript %d : not integer
+%s : too few array subscripts
+%s : too many array subscripts
+%s : array subscripts missing
+%s : adjustable-size array : used before definition
+%s : symbolic constant : subscript illegal
+%s : symbolic constant : substring illegal
+%s : variable : argument list illegal
+%s : function : argument list missing
+%s : not a variable
+%s : function : substring operator illegal
+left side of assignment illegal
+%s : assignment using active DO variable illegal
+incompatible types in assignment
+%s : formal argument %s : Hollerith illegal with CHARACTER
+%s : formal argument %s : type mismatch
+%s : formal argument %s : type mismatch
+%s : formal argument %s : length mismatch
+%s : formal argument %s : length mismatch
+%s : alternate RETURN statement missing
+%s : formal argument * : actual not alternate-return label
+%s : formal argument %s : not alternate-return label
+%s : formal argument %s : actual not subprogram
+%s : formal argument %s : subprogram mismatch
+%s : formal argument %s : not subprogram
+%s : NEAR formal argument %s : actual has FAR or HUGE address
+%s : formal argument %s : length mismatch
+%s : formal argument %s : type mismatch
+%s : not function or subroutine
+%s : illegal use of function or subroutine
+%s : type redefined
+%s : length redefined
+%s : too few actual arguments
+%s : too many actual arguments
+%s : directly recursive
+%s : Hollerith constant passed by value
+%s : assumed-size array %s : cannot pass by value
+%s : adjustable-size array %s : cannot pass by value
+%s : value argument bigger than segment
+%s : formal argument %s : CHARACTER expressions cannot be passed by VALUE
+nonconstant CHARACTER length : cannot pass by value
+incompatible types for formal and actual arguments
+%s : FAR formal argument %s : passed HUGE array
+%s : cannot use CHARACTER *(*) function
+consecutive arithmetic operators illegal
+negative exponent with zero base
+division by zero
+nonlogical operand
+non-numeric operand
+exponentiation of COMPLEX and DOUBLE PRECISION together illegal
+non-numeric operand
+operands of relation not numeric or character
+one numeric, one character operand
+only comparisons by .EQ. and .NE. allowed for complex items
+concatenation of expressions illegal
+noncharacter operand
+consecutive relational operators illegal
+illegal implied-DO list in expression
+illegal Xxprep node type
+%s : COMPLEX : type conversion error
+%s : REAL : type conversion error
+%s : operation error with COMPLEX operands
+%s : operation error with REAL operands
+%s : symbol class illegal here
+DO : too many expressions
+label %ld : not between 1 and 99999
+I/O implied-DO list : list empty
+I/O implied-DO list : too many expressions
+I/O implied-DO list : illegal assignment
+I/O implied-DO list : too few expressions
+I/O implied-DO list : assigment missing
+assignments in COMPLEX constant illegal
+illegal assignment in parenthesized expression
+numeric constant expected
+%s : not symbolic constant
+component of COMPLEX number not INTEGER or REAL
+parser stack overflow, statement too complex
+syntax error
+%s : not %s
+%s : noncharacter array nonstandard
+%s : array subscript missing
+%s : not a variable or array element
+label %ld : not between 1 and 99999
+UNIT = * illegal for this statement
+illegal unit specifier
+illegal format specifier
+HUGE format illegal
+FAR format illegal in medium model
+%s : illegal statement label
+%s : appears twice
+I/O option %ld : <keyword>= missing
+%s : option illegal for this statement
+%s : option nonstandard
+INQUIRE : either UNIT= or FILE= needed
+UNIT= missing
+END= : illegal when REC= present
+REC= : illegal when FMT= *
+illegal I/O formatting for internal unit
+REC= illegal for internal unit
+FORMAT : label missing
+ASSIGN : too many format labels
+no ASSIGN statements for FMT=<integer variable>
+initial left parenthesis expected in format
+repeat count on nonrepeatable descriptor
+integer expected to precede H, X, or P edit descriptor
+positive integer expected in format
+missing N or Z after B in format
+maximum nesting level for formats exceeded
+%c or $ : nonstandard edit descriptor in format
+Z : nonstandard edit descriptor in format
+M field exceeds W field in I edit descriptor
+'.' : expected in format
+unexpected end of format encountered
+'%c' : unexpected character in format
+unexpected character in format
+integer expected in format
+separator expected in format
+RECL= : out of range
+UNIT= : not between -32767 and 32767
+%s : unrecognized value in option
+RECL= required to open direct-access file
+illegal input list item
+%s : * illegal with this option
+%s : assumed-size array illegal here
+%s : HUGE internal units illegal
+%s : record length too large for internal unit
+FAR or HUGE I/O item illegal in medium model
+%s : cannot modify active DO variable
+LOCKING : nonstandard
+%s : lowercase in string nonstandard
+
\ No newline at end of file
diff --git a/Microsoft Fortran v41/BIN/F1.EXE b/Microsoft Fortran v41/BIN/F1.EXE
new file mode 100644
index 0000000..ff7bd1e
Binary files /dev/null and b/Microsoft Fortran v41/BIN/F1.EXE differ
diff --git a/Microsoft Fortran v41/BIN/F2.EXE b/Microsoft Fortran v41/BIN/F2.EXE
new file mode 100644
index 0000000..1ac91e4
Binary files /dev/null and b/Microsoft Fortran v41/BIN/F2.EXE differ
diff --git a/Microsoft Fortran v41/BIN/F23.ERR b/Microsoft Fortran v41/BIN/F23.ERR
new file mode 100644
index 0000000..e39f895
--- /dev/null
+++ b/Microsoft Fortran v41/BIN/F23.ERR	
@@ -0,0 +1,67 @@
+						/* fatals */
+
+1001	"Internal Compiler Error\n\t\t(compiler file '%s', line %d)\n\t\tContact Microsoft Technical Support"
+1002	"out of heap space"
+1003	"error count exceeds %d; stopping compilation"
+1004	"unexpected EOF"
+1005	"string too big for buffer"
+1006	"write error on compiler intermediate file"
+1007	"unrecognized flag '%s' in '%s'"
+1027	"DGROUP data allocation exceeds 64K"
+1028	"infinite recursion in cnstrpush"
+1029	"there are > 512 bytes of arguments"
+1030	"there are > 512 bytes of local variables"
+1031	"limit exceeded for nesting function calls"
+1032	"cannot open object listing file '%s'"
+1033	"cannot open assembly language output file '%s'"
+1034	"cannot open source file '%s'"
+1035	"expression too complex, please simplify"
+1036	"cannot open source listing file '%s'"
+1037	"cannot open object file '%s'"
+1038	"unexpected end of file in Pass 3"
+1039	"unrecoverable heap overflow in Pass 3"
+1040	"unexpected EOF in source file '%s'"
+1041	"cannot open compiler intermediate file - no more files"
+1042	"cannot open compiler intermediate file - no such file or directory"
+1043	"cannot open compiler intermediate file"
+1044	"out of disk space for compiler intermediate file"
+1045	"floating-point overflow"
+1046	"bad %s flag, would overwrite '%s' with '%s'"
+1047	"too many %s flags, '%s'"
+1048	"unknown option '%c' in '%s'"
+1049	"invalid numerical argument '%s'"
+1050	"%s : code segment too large\n"
+1051	"program too complex"
+1000	"UNKNOWN FATAL ERROR\n\t\tContact Microsoft Technical Support"
+
+						/* errors */
+	
+2023	"divide by 0"
+2024	"mod by 0"
+2124	"CODE GENERATION ERROR\n\t\tContact Microsoft Technical Support"
+2125	"%s : allocation exceeds 64K"
+2126	"%s : automatic allocation exceeds %s"
+2127	"parameter allocation exceeds 32K"
+2128	"%s : huge array cannot be aligned to segment boundary"
+2129	"static function '%s' not found\n"
+2000	"UNKNOWN ERROR\n\t\tContact Microsoft Technical Support"
+
+						/* warnings */
+	
+4056	"overflow in constant arithmetic"
+4057	"overflow in constant multiplication"
+4058	"address of frame variable taken, DS != SS"
+4059	"segment lost in conversion"
+4060	"conversion of long address to short address"
+4061	"long/short mismatch in argument : conversion supplied"
+4062	"near/far mismatch in argument : conversion supplied"
+4063	"%s : function too large for post-optimizer\n"
+4064	"procedure too large, skipping %s optimization and continuing\n"
+4065	"recoverable heap overflow in post-optimizer - some optimizations may be missed\n"
+4066	"local symbol table overflow - some local symbols may be missing in listings\n"
+4069	"conversion of near pointer to long integer"
+4070	"function called as procedure"
+4072	"Insufficient memory to process debugging information"
+4073	"scoping too deep, deepest scoping merged when debugging"
+4186	"string too long - truncated to %d characters"
+4000	"UNKNOWN WARNING\n\t\tContact Microsoft Technical Support"
diff --git a/Microsoft Fortran v41/BIN/F3.EXE b/Microsoft Fortran v41/BIN/F3.EXE
new file mode 100644
index 0000000..dabe137
Binary files /dev/null and b/Microsoft Fortran v41/BIN/F3.EXE differ
diff --git a/Microsoft Fortran v41/BIN/F3S.EXE b/Microsoft Fortran v41/BIN/F3S.EXE
new file mode 100644
index 0000000..df727f0
Binary files /dev/null and b/Microsoft Fortran v41/BIN/F3S.EXE differ
diff --git a/Microsoft Fortran v41/BIN/FL.ERR b/Microsoft Fortran v41/BIN/FL.ERR
new file mode 100644
index 0000000..2bf71fe
--- /dev/null
+++ b/Microsoft Fortran v41/BIN/FL.ERR	
@@ -0,0 +1,46 @@
+				/* fatal messages */
+
+1001	"could not execute '%s'"
+1000	"UNKNOWN COMMAND LINE FATAL ERROR\n\t\tContact Microsoft Technical Support"
+
+				/* error messages */
+
+2002	"a previously defined model specification has been overridden"
+2003	"missing source file name"
+2007	"bad %s flag, would overwrite '%s' with '%s'"
+2008	"too many %s flags, '%s'"
+2009	"unknown option '%c' in '%s'"
+2010	"unknown floating point option"
+2011	"only one floating point model allowed"
+2012	"too many linker flags on command line"
+2013	"incomplete model specification"
+/* 2014	"-ND not allowed with -Ad" */
+2015	"assembly files are not handled"
+2016	"-Gw and -ND %s are incompatible"
+2017	"-Gw and -Au flags are incompatible"
+2018	"cannot open linker cmd file"
+2019	"cannot overwrite the source file, '%s'"
+2021	"invalid numerical argument '%s'"
+2022	"cannot open help file, '%s'"
+2023	"invalid model specification - small model only"
+2025	"missing argument"
+2000	"UNKNOWN COMMAND LINE ERROR\n\t\tContact Microsoft Technical Support"
+
+				/* warning messages */
+
+4001	"listing has precedence over assembly output"
+4002	"ignoring unknown flag '%s'"
+4003	"80186/286 selected over 8086 for code generation"
+4004	"optimizing for time over space"
+4005	"could not execute '%s';\nPlease enter new file name (full path) or Ctrl-C to quit: "
+4008	"non-standard model -- defaulting to large model libraries"
+4009	"threshold only for far/huge data, ignored"
+4010	"-Gp not implemented, ignored"
+4011	"preprocessing overrides source listing"
+4012	"function declarations override source listing"
+4013	"combined listing has precedence over object listing"
+4014	"invalid value %d for '%s'. Default %d is used"
+4017	"conflicting stack checking options - stack checking disabled"
+4018	".DEF files supported in protected mode only"
+4019	"string too long - truncated to %d characters"
+4000	"UNKNOWN COMMAND LINE WARNING\n\t\tContact Microsoft Technical Support"
diff --git a/Microsoft Fortran v41/BIN/FL.EXE b/Microsoft Fortran v41/BIN/FL.EXE
new file mode 100644
index 0000000..0055f97
Binary files /dev/null and b/Microsoft Fortran v41/BIN/FL.EXE differ
diff --git a/Microsoft Fortran v41/BIN/FL.HLP b/Microsoft Fortran v41/BIN/FL.HLP
new file mode 100644
index 0000000..a279a7d
--- /dev/null
+++ b/Microsoft Fortran v41/BIN/FL.HLP	
@@ -0,0 +1,66 @@
+FORTRAN COMPILER OPTIONS
+-METACOMMAND-
+/4cc<string> conditional compilation
+/4I{2|4} default integer size
+/4{Y|N}6 fortran 66
+/4{Y|N}f free-form format
+/4{Y|N}b debug
+/4{Y|N}t truncate variable names
+/4{Y|N}s strict syntax
+/4{Y|N}d declare
+-SOURCE LISTINGS-
+/Slnumber listing page width
+/Sttitle Title
+/Spnumber listing page size
+/Sssub-title Sub_title
+-MEMORY MODEL-
+/AM medium model
+/AL large model
+/AH huge model
+-OPTIMIZATION-
+/O enable optimization (same as /Ot)
+/Od disable optimizations
+/Ol enable loop optimizations
+/Op enable precision optimizations
+/Os optimize for space
+/Ot optimize for speed (default)
+/Ox max. optimization (/Oalt /Gs)
+-CODE GENERATION-
+/G0 8086 instructions
+/G1  186 instructions
+/G2  286 instructions
+/Ge enable stack checking
+/Gs disable stack checking
+/Gt[number] data size threshold
+-OUTPUT FILES-
+/Fa[assembly listing file]
+/Fb[bound executable file]
+/Fc[mixed object/source listing file]
+/Fe<executable file>
+/Fl[object listing file]
+/Fm[map file]
+/Fo<object file>
+/Fs[source listing file]
+-LANGUAGE-
+/Zi symbolic debugging information
+/Zl remove default library info
+/Zs syntax check only
+-FLOATING POINT-
+/FPa calls with altmath
+/FPc calls with emulator
+/FPc87 calls with 8087 library
+/FPi inline with emulator
+/FPi87 inline with 8087
+-MISCELLANEOUS-
+/c compile only, no link
+/H<number> external name length
+/I<name> add "include file" path
+/V<string> set version string
+/W<number> warning level
+/X ignore "standard places"
+-LINKING-
+/F<hex_number> stack size (hex. bytes)
+/Lc link compatibility mode executable
+/Lr link compatibility mode executable
+/Lp link protect mode executable
+/link [linker_options_and_libraries]
diff --git a/Microsoft Fortran v41/BIN/ILINK.EXE b/Microsoft Fortran v41/BIN/ILINK.EXE
new file mode 100644
index 0000000..7120758
Binary files /dev/null and b/Microsoft Fortran v41/BIN/ILINK.EXE differ
diff --git a/Microsoft Fortran v41/BIN/IMPLIB.EXE b/Microsoft Fortran v41/BIN/IMPLIB.EXE
new file mode 100644
index 0000000..5b2c775
Binary files /dev/null and b/Microsoft Fortran v41/BIN/IMPLIB.EXE differ
diff --git a/Microsoft Fortran v41/BIN/LIB.EXE b/Microsoft Fortran v41/BIN/LIB.EXE
new file mode 100644
index 0000000..f48477b
Binary files /dev/null and b/Microsoft Fortran v41/BIN/LIB.EXE differ
diff --git a/Microsoft Fortran v41/BIN/LINK.EXE b/Microsoft Fortran v41/BIN/LINK.EXE
new file mode 100644
index 0000000..648c0c1
Binary files /dev/null and b/Microsoft Fortran v41/BIN/LINK.EXE differ
diff --git a/Microsoft Fortran v41/BIN/MAKE.EXE b/Microsoft Fortran v41/BIN/MAKE.EXE
new file mode 100644
index 0000000..f44fb18
Binary files /dev/null and b/Microsoft Fortran v41/BIN/MAKE.EXE differ
diff --git a/Microsoft Fortran v41/BIN/SETENV.EXE b/Microsoft Fortran v41/BIN/SETENV.EXE
new file mode 100644
index 0000000..fd0f7a9
Binary files /dev/null and b/Microsoft Fortran v41/BIN/SETENV.EXE differ
diff --git a/Microsoft Fortran v41/E.FOR b/Microsoft Fortran v41/E.FOR
new file mode 100644
index 0000000..1cde1b0
--- /dev/null
+++ b/Microsoft Fortran v41/E.FOR	
@@ -0,0 +1,36 @@
+      program e
+      integer*2 high, n, x
+      integer*2 a(200)
+
+      high = 200
+      x = 0
+      n = high - 1
+
+  150 if ( n .le. 0 ) goto 200
+      a( n + 1 ) = 1
+      n = n - 1
+      goto 150
+
+  200 a( 2 ) = 2
+      a( 1 ) = 0
+  220 if ( high .le. 9 ) goto 400
+      high = high - 1
+      n = high
+  240 if ( n .eq. 0 ) goto 300
+      a( n + 1 ) = MOD( x, n )
+      x = ( 10 * a( n ) ) + ( x / n )
+      n = n - 1
+      goto 240
+  300 if ( x .ge. 10 ) goto 320
+      write( *, 2000 ) x
+      goto 220
+  320 write( *, 2001 ) x
+      goto 220
+  400 write( *, 2010 )
+ 2000 format( '+', I1 )
+ 2001 format( '+', I2 )
+ 2010 format( '  done' )
+      end
+
+
+
diff --git a/Microsoft Fortran v41/LIB/LLIBFORE.LIB b/Microsoft Fortran v41/LIB/LLIBFORE.LIB
new file mode 100644
index 0000000..d46afaf
Binary files /dev/null and b/Microsoft Fortran v41/LIB/LLIBFORE.LIB differ
diff --git a/Microsoft Fortran v41/Microsoft_FORTRAN_CodeView_and_Utilities_Users_Guide.pdf b/Microsoft Fortran v41/Microsoft_FORTRAN_CodeView_and_Utilities_Users_Guide.pdf
new file mode 100644
index 0000000..e3327c0
Binary files /dev/null and b/Microsoft Fortran v41/Microsoft_FORTRAN_CodeView_and_Utilities_Users_Guide.pdf differ
diff --git a/Microsoft Fortran v41/SIEVE.FOR b/Microsoft Fortran v41/SIEVE.FOR
new file mode 100644
index 0000000..8a13ffa
--- /dev/null
+++ b/Microsoft Fortran v41/SIEVE.FOR	
@@ -0,0 +1,28 @@
+C Eratosthenes Sieve from BYTE magazine
+      program sieve
+      logical flags( 8191 )
+      integer*2 i, prime, k, count
+      integer*2 iter
+
+      write( *, 50 )
+ 50   format( ' 10 iterations' )
+      do 92 iter = 1, 10
+      count = 0
+      do 10 i = 0, 8190
+ 10   flags( i ) = .true.
+      do 91 i = 0, 8190
+      if ( .not. flags( i ) ) go to 91
+      prime = i + i + 3
+      k = i + prime
+ 20   if ( k .gt. 8190 ) go to 90
+      flags( k ) = .false.
+      k = k + prime
+      go to 20
+ 90   count = count + 1
+ 91   continue
+ 92   continue
+      write( *, 200 ) count
+ 200  format( 1X, I6, ' primes' )
+      stop
+ 100  format( 1X, I6 )
+      end
diff --git a/Microsoft Fortran v41/TMP/foo b/Microsoft Fortran v41/TMP/foo
new file mode 100644
index 0000000..44cc6f1
--- /dev/null
+++ b/Microsoft Fortran v41/TMP/foo	
@@ -0,0 +1 @@
+oo
diff --git a/Microsoft Fortran v41/TTT.FOR b/Microsoft Fortran v41/TTT.FOR
new file mode 100644
index 0000000..79ad11c
--- /dev/null
+++ b/Microsoft Fortran v41/TTT.FOR	
@@ -0,0 +1,210 @@
+C fortran version of proving you can't win at tic-tac-toe if the opponent is competent
+C constants:
+C    score win:   6
+C    score tie:   5
+C    score lose:  4
+C    score max:   9
+C    score min:   2
+C    piece X:     1
+C    piece O:     2
+C    piece blank: 0
+
+      program ttt
+      integer*4 moves
+      integer*2 b(9), sp(10), sv(10), sa(10), sb(10), sm(10)
+      integer*2 mc, l
+      integer*2 alpha, beta, wi, st, sc, v, p, pm, m
+      common /area/ b,sp,sv,sa,sb,sm,mc,alpha,beta,wi,st,sc,v,p,pm,m
+
+      integer*2 system
+
+      do 6 l = 1, 9, 1
+          b( l ) = 0
+ 6    continue
+
+      moves = 0
+
+      do 10 l = 1, 10, 1
+C      do 10 l = 1, 1, 1
+          mc = 0
+          m = 1
+          call runmm
+          m = 2
+          call runmm
+          m = 5
+          call runmm
+          moves = moves + mc
+ 10   continue
+
+      write( *, 20 ) moves
+ 20   format( '  moves: ', I6 )
+      end
+
+ 1000 subroutine runmm
+      integer*2 b(9), sp(10), sv(10), sa(10), sb(10), sm(10)
+      integer*2 mc, l
+      integer*2 alpha, beta, wi, st, sc, v, p, pm, m
+      common /area/ b,sp,sv,sa,sb,sm,mc,alpha,beta,wi,st,sc,v,p,pm,m
+
+      alpha = 2
+      beta = 9
+      p = m
+      b(m) = 1
+      call minmax
+      b(m) = 0
+      return
+      end
+
+ 2000 subroutine winner
+      integer*2 b(9), sp(10), sv(10), sa(10), sb(10), sm(10)
+      integer*2 mc, l
+      integer*2 alpha, beta, wi, st, sc, v, p, pm, m
+      common /area/ b,sp,sv,sa,sb,sm,mc,alpha,beta,wi,st,sc,v,p,pm,m
+
+      wi = b( 1 )
+      if ( 0 .eq. wi ) go to 2100
+      if ( ( wi .eq. b( 2 ) ) .and. ( wi .eq. b( 3 ) ) ) return
+      if ( ( wi .eq. b( 4 ) ) .and. ( wi .eq. b( 7 ) ) ) return
+ 2100 wi = b( 4 )
+      if ( 0 .eq. wi ) go to 2200
+      if ( ( wi .eq. b( 5 ) ) .and. ( wi .eq. b( 6 ) ) ) return
+ 2200 wi = b( 7 )
+      if ( 0 .eq. wi ) go to 2300
+      if ( ( wi .eq. b( 8 ) ) .and. ( wi .eq. b( 9 ) ) ) return
+ 2300 wi = b( 2 )
+      if ( 0 .eq. wi ) go to 2400
+      if ( ( wi .eq. b( 5 ) ) .and. ( wi .eq. b( 8 ) ) ) return
+ 2400 wi = b( 3 )
+      if ( 0 .eq. wi ) go to 2500
+      if ( ( wi .eq. b( 6 ) ) .and. ( wi .eq. b( 9 ) ) ) return
+ 2500 wi = b( 5 )
+      if ( 0 .eq. wi ) return
+      if ( ( wi .eq. b( 1 ) ) .and. ( wi .eq. b( 9 ) ) ) return
+      if ( ( wi .eq. b( 3 ) ) .and. ( wi .eq. b( 7 ) ) ) return
+      wi = 0
+      end
+
+ 4000 subroutine minmax
+      integer*2 b(9), sp(10), sv(10), sa(10), sb(10), sm(10)
+      integer*2 mc, l
+      integer*2 alpha, beta, wi, st, sc, v, p, pm, m
+      common /area/ b,sp,sv,sa,sb,sm,mc,alpha,beta,wi,st,sc,v,p,pm,m
+
+      st = 0
+      v = 0
+ 4100 mc = mc + 1
+      if ( st .lt. 4 ) go to 4150
+C the computed goto is about 20% faster than calling winner
+C      call winner
+      go to ( 5010, 5020, 5030, 5040, 5050, 5060, 5070, 5080, 5090 ), p
+ 4110 if ( wi .eq. 0 ) go to 4140
+      if ( wi .ne. 1 ) go to 4130
+      sc = 6
+      go to 4280
+ 4130 sc = 4
+      go to 4280
+ 4140 if ( st .ne. 8 ) go to 4150
+      sc = 5
+      go to 4280
+ 4150 if ( b( p ) .eq. 1 ) go to 4160
+      v = 2
+      pm = 1
+      go to 4170
+ 4160 v = 9
+      pm = 2
+ 4170 p = 1
+ 4180 if ( b( p ) .ne. 0 ) go to 4500
+      b( p ) = pm
+ 4182 st = st + 1
+      sp( st ) = p
+      sv( st ) = v
+      sa( st ) = alpha
+      sb( st ) = beta
+      sm( st ) = pm
+      go to 4100
+ 4280 p = sp( st )
+      v = sv( st )
+      alpha = sa( st )
+      beta = sb( st )
+      pm = sm( st )
+      st = st - 1
+      b( p ) = 0
+      if ( pm .eq. 1 ) go to 4340
+      if ( sc .eq. 4 ) go to 4530
+      if ( sc .lt.  v ) v = sc
+      if ( v .lt. beta ) beta = v
+      if ( beta .le. alpha ) go to 4520
+      go to 4500
+ 4340 if ( sc .eq. 6 ) go to 4530
+      if ( sc .gt. v ) v = sc
+      if ( v .gt. alpha ) alpha = v
+      if ( alpha .ge. beta ) go to 4520
+ 4500 p = p + 1
+      if ( p .lt. 10 ) go to 4180
+ 4520 sc = v
+ 4530 if ( st .eq. 0 ) return
+      go to 4280
+
+ 5010 wi = b(1)
+      if ( ( wi .eq. b(2) ) .and. ( wi .eq. b(3) ) ) goto 4110
+      if ( ( wi .eq. b(4) ) .and. ( wi .eq. b(7) ) ) goto 4110
+      if ( ( wi .eq. b(5) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5020 wi = b(2)
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(3) ) ) goto 4110
+      if ( ( wi .eq. b(5) ) .and. ( wi .eq. b(8) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5030 wi = b(3)
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(2) ) ) goto 4110
+      if ( ( wi .eq. b(6) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      if ( ( wi .eq. b(5) ) .and. ( wi .eq. b(7) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5040 wi = b(4)
+      if ( ( wi .eq. b(5) ) .and. ( wi .eq. b(6) ) ) goto 4110
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(7) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5050 wi = b(5)
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      if ( ( wi .eq. b(3) ) .and. ( wi .eq. b(7) ) ) goto 4110
+      if ( ( wi .eq. b(2) ) .and. ( wi .eq. b(8) ) ) goto 4110
+      if ( ( wi .eq. b(4) ) .and. ( wi .eq. b(6) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5060 wi = b(6)
+      if ( ( wi .eq. b(4) ) .and. ( wi .eq. b(5) ) ) goto 4110
+      if ( ( wi .eq. b(3) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5070 wi = b(7)
+      if ( ( wi .eq. b(8) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(4) ) ) goto 4110
+      if ( ( wi .eq. b(5) ) .and. ( wi .eq. b(3) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5080 wi = b(8)
+      if ( ( wi .eq. b(7) ) .and. ( wi .eq. b(9) ) ) goto 4110
+      if ( ( wi .eq. b(2) ) .and. ( wi .eq. b(5) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+ 5090 wi = b(9)
+      if ( ( wi .eq. b(7) ) .and. ( wi .eq. b(8) ) ) goto 4110
+      if ( ( wi .eq. b(3) ) .and. ( wi .eq. b(6) ) ) goto 4110
+      if ( ( wi .eq. b(1) ) .and. ( wi .eq. b(5) ) ) goto 4110
+      wi = 0
+      go to 4110
+
+      end
+
+
diff --git a/Microsoft Fortran v41/m.bat b/Microsoft Fortran v41/m.bat
new file mode 100644
index 0000000..993ed52
--- /dev/null
+++ b/Microsoft Fortran v41/m.bat	
@@ -0,0 +1,2 @@
+ntvdm -r:. -e:include=include,init=bin,path=bin,lib=lib,tmp=tmp bin\fl /FPc /Ox %1.for
+