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bcd_to_ascii_m.f90
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module BCD_TO_ASCII_M
implicit NONE
public
integer :: ASCII_TO_BCD(0:255)
data ASCII_TO_BCD / &
! 0000 - 0037: Control chars
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'52', o'77', o'13', o'53', o'34', o'60', o'32', & ! o'040-0047: !"#$%&'
o'17', o'74', o'54', o'60', o'33', o'40', o'73', o'21', & ! o'050-0057: ()*+,-./
o'12', o'01', o'02', o'03', o'04', o'05', o'06', o'07', & ! o'060-0067: 01234567
o'10', o'11', o'15', o'56', o'76', o'35', o'16', o'72', & ! o'070-0077: 89:;<=>?
o'14', o'61', o'62', o'63', o'64', o'65', o'66', o'67', & ! o'100-0107: @ABCDEFG
o'70', o'71', o'41', o'42', o'43', o'44', o'45', o'46', & ! o'110-0117: HIJKLMNO
o'47', o'50', o'51', o'22', o'23', o'24', o'25', o'26', & ! o'120-0127: PQRSTUVW
o'27', o'30', o'31', o'75', o'36', o'55', o'20', o'57', & ! o'130-0137: XYZ[\]^_
o'00', o'61', o'62', o'63', o'64', o'65', o'66', o'67', & ! o'140-0147: `abcdefg
o'70', o'71', o'41', o'42', o'43', o'44', o'45', o'46', & ! o'150-0157: hijklmno
o'47', o'50', o'51', o'22', o'23', o'24', o'25', o'26', & ! o'160-0167: pqrstuvw
o'27', o'30', o'31', o'00', o'32', o'77', o'35', o'00', & ! o'170-0177: xyz{|}~DEL
! 0200-0247: More control chars
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', &
o'00', o'20', o'00', o'00', o'74', o'00', o'00', o'00', & ! o'240-0247: ¡¢£¤¥¦§
o'00', o'00', o'00', o'00', o'17', o'00', o'00', o'00', & ! o'250-0257: ¨©ª«¬®¯
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', & ! o'260-0267: °±²³´µ¶·
o'00', o'00', o'00', o'00', o'00', o'00', o'00', o'00', & ! o'270-0277: ¸¹º»¼½¾¿
! National choice chars
o'00', o'74', o'00', o'00', o'00', o'00', o'13', o'00', & ! o'300-0307: ÀÁÂÃÄÅÆÇ
o'00', o'53', o'00', o'00', o'00', o'00', o'00', o'00', & ! o'310-0317: ÈÉÊËÌÍÎÏ
o'60', o'00', o'00', o'00', o'00', o'00', o'14', o'00', & ! o'320-0327: ÐÑÒÓÔÕÖ×
o'00', o'00', o'00', o'00', o'00', o'00', o'34', o'00', & ! o'330-0337: ØÙÚÛÜÝÞß
o'00', o'74', o'00', o'00', o'00', o'00', o'13', o'00', & ! o'340-0347: àáâãäåæç
o'00', o'53', o'00', o'00', o'00', o'00', o'00', o'00', & ! o'350-0357: èéêëìíîï
o'60', o'00', o'00', o'00', o'00', o'00', o'14', o'00', & ! o'360-0367: ðñòóôõö÷
o'00', o'00', o'00', o'00', o'00', o'00', o'34', o'00' & ! o'370-0377: øùúûüýþÿ
/
! SIMH 1401 BCD encoding:
!
! Numeric b 1 2 3 4 5 6 7 8 9 0 3 4 5 6 7
! Rows b 8 8 8 8 8
! ===========================================
! No zone 1 2 3 4 5 6 7 8 9 0 # @ : > ( 000-017 = 00-0F
! 0 zone A ^ / S T U V W X Y Z ' , % = \ + 020-037 = 10-1F
! 11 zone B - J K L M N O P Q R ! $ * ] ; _ 040-057 = 20-2F
! 12 zone BA & A B C D E F G H I ? . ) [ < " 060-077 = 30-3F
!
! ' is 0-2-8, and ^ has no input punch
! (it may punch as zero on output).
!
! Pierce's primary BCD encoding:
!
! Numeric b 1 2 3 4 5 6 7 8 9 0 3 4 5 6 7
! Rows b 8 8 8 8 8
! ===========================================
! No zone 1 2 3 4 5 6 7 8 9 0 # @ : > { 000-017 = 00-0F
! 0 zone A ^ / S T U V W X Y Z | , % ~ \ " 020-037 = 10-1F
! 11 zone B - J K L M N O P Q R ! $ * ] ; _ 040-057 = 20-2F
! 12 zone BA & A B C D E F G H I ? . ) [ < } 060-077 = 30-3F
!
! | is 0-2-8, and ^ has no input punch
! (it may punch as zero on output).
!
! Pierce's alternate BCD encoding:
!
! Numeric b 1 2 3 4 5 6 7 8 9 0 3 4 5 6 7
! Rows b 8 8 8 8 8
! ===========================================
! No zone 1 2 3 4 5 6 7 8 9 0 = ' : > { 000-017 = 00-0F
! 0 zone A ^ / S T U V W X Y Z | , ( ~ \ " 020-037 = 10-1F
! 11 zone B - J K L M N O P Q R ! $ * ] ; _ 040-057 = 20-2F
! 12 zone BA + A B C D E F G H I ? . ) [ < } 060-077 = 30-3F
!
! | is 0-2-8, and ^ has no input punch
! (it may punch as zero on output).
!
! Icelandic encoding:
!
! Numeric b 1 2 3 4 5 6 7 8 9 0 3 4 5 6 7
! Rows b 8 8 8 8 8
! ===========================================
! No zone 1 2 3 4 5 6 7 8 9 0 Æ Ö : > { 000-017 = 00-0F
! 0 zone A ^ / S T U V W X Y Z | , Þ ~ \ " 020-037 = 10-1F
! 11 zone B - J K L M N O P Q R ! É * ] ; _ 040-057 = 20-2F
! 12 zone BA Ð A B C D E F G H I ? . Á [ < } 060-077 = 30-3F
!
! | is 0-2-8, and ^ has no input punch
! (it may punch as zero on output).
!
! Differences: 12 0 11 0 12 0 0 12
! 2 3 3 4 4 4 5 7 7 7
! 8 8 8 8 8 8 8 8 8 8
! =================================================
! Pierce Primary & | # $ @ % ) ~ { " }
! Pierce Alternate + | = $ ' ( ) ~ { " }
! SIMH & ' # $ @ % ) = ( + "
! Icelandic Ð | Æ É Ö Þ Á ~ { " }
integer, parameter :: Pierce_A_Encoding = 1 ! IBM A-chain %)#&@
integer, parameter :: Pierce_H_Encoding = 2 ! IBM H-chain ()=+'
integer, parameter :: SIMH_Encoding = 3
integer, parameter :: Icelandic_Encoding = 4
character, parameter :: CodeCodes(pierce_a_encoding:icelandic_encoding) = &
& (/'A','H','S','I'/) ! Command-line options
integer :: Encoding = Pierce_A_Encoding
character(63), parameter :: &
& Encodings(pierce_a_encoding:icelandic_encoding) = (/ &
& '1234567890#@:>{^/STUVWXYZ|,%~\"-JKLMNOPQR!$*];_&ABCDEFGHI?.)[<}', &
& '1234567890='':>{^/STUVWXYZ|,(~\"-JKLMNOPQR!$*];_+ABCDEFGHI?.)[<}', &
& '1234567890#@:>(^/STUVWXYZ'',%=\+-JKLMNOPQR!$*];_&ABCDEFGHI?.)[<"', &
& '1234567890ÆÖ:>{^/STUVWXYZ|,Þ~\"-JKLMNOPQR!É*];_ÐABCDEFGHI?.Á[<}'/)
character :: BCD_TO_ASCII(0:66) = (/ &
! Octal
! Pierce BCD Card 1401
! A BA8421 Code Note NAME
& ' ', & ! 000 blank Blank
! 001-011 1 - 9 1-9
& '1', '2', '3', '4', '5', '6', '7', '8', '9', &
& '0', & ! 012 0 0
& '#', & ! 013 3-8 #
& '@', & ! 014 4-8 @
& ':', & ! 015 5-8 2 : Colon
& '>', & ! 016 6-8 2 > Greater than
& '{', & ! 017 7-8 2 ¬ Tape mark
& '^', & ! 020 none 3 Blank on even parity tape
& '/', & ! 021 0-1 /
! 022-031 0-2 - 0-9 S-Z
& 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', &
& "|", & ! 032 0-2-8 Record mark
& ',', & ! 033 0-3-8 ,
& '%', & ! 034 0-4-8 %
& '~', & ! 035 0-5-8 1 = Word separator
& '\', & ! 036 0-6-8 2 ' Apostrophe
& '"', & ! 037 0-7-8 2 " Tape segment mark
& '-', & ! 040 11 -
! 041-051 11-1 - 11-9 J-R
& 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', &
& '!', & ! 052 11-0 ! (Minus zero)
& '$', & ! 053 11-3-8 $
& '*', & ! 054 11-4-8 *
& ']', & ! 055 11-5-8 2 ) Right parenthesis
& ';', & ! 056 11-6-8 2 ;
& '_', & ! 057 11-7-8 2 Delta
& '&', & ! 060 12 &
! 061-071 12-1 - 12-9 A-I
& 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', &
& '?', & ! 072 12-0 & Plus zero
& '.', & ! 073 12-3-8 .
& ')', & ! 074 12-4-8 ¤ Lozenge
& '[', & ! 075 12-5-8 2 ( Left parenthesis
& '<', & ! 076 12-6-8 2 < Less than
& '}', & ! 077 12-7-8 1 Group mark
& ' ', & ! Used for OPT in OP_CODES
& '~', & ! Used for PRO in OP_CODES
& '{' & ! Used for REQ in OP_CODES
/)
! Notes: 1. Non-printing on "A" chain
! 2. Special character + note 1
! 3. No card code + note 2
integer, parameter :: &
! BCD characters Octal Card ASCII / Name
! Code
& B_BLANK = 0 , & ! 000 Blank Blank
& B_ONE = 1 , & ! 001 1 1
& B_TWO = 2 , & ! 002 2 2
& B_THREE = 3 , & ! 003 3 3
& B_FOUR = 4 , & ! 004 4 4
& B_FIVE = 5 , & ! 005 5 5
& B_SIX = 6 , & ! 006 6 6
& B_SEVEN = 7 , & ! 007 7 7
& B_EIGHT = 8 , & ! 010 8 8
& B_NINE = 9 , & ! 011 9 9
& B_ZERO = 10 , & ! 012 0 0
& B_HASH = 11 , & ! 013 3-8 #
& B_AT = 12 , & ! 014 4-8 @
& B_COLON = 13 , & ! 015 5-8 :
& B_GREATER = 14 , & ! 016 6-8 >
& B_TM = 15 , & ! 017 7-8 (¬ Tape Mark
& B_ALT = 16 , & ! 020 None ^¢ Blank on even parity tape
& B_SLASH = 17 , & ! 021 0-1 /
& B_S = 18 , & ! 022 0-2 S
& B_T = 19 , & ! 023 0-3 T
& B_U = 20 , & ! 024 0-4 U
& B_V = 21 , & ! 025 0-5 V
& B_W = 22 , & ! 026 0-6 W
& B_X = 23 , & ! 027 0-7 X
& B_Y = 24 , & ! 030 0-8 Y
& B_Z = 25 , & ! 031 0-9 Z
& B_RECMRK = 26 , & ! 032 0-2-8 '|
& B_COMMA = 27 , & ! 033 0-3-8 ,
& B_PERCNT = 28 , & ! 034 0-4-8 %
& B_WM = 29 , & ! 035 0-5-8 = Word separator, word mark on tape
& B_BS = 30 , & ! 036 0-6-8 \' Apostrophe
& B_TS = 31 , & ! 037 0-7-8 + Tape segment mark
& B_MINUS = 32 , & ! 040 11 -
& B_J = 33 , & ! 041 11-1 J
& B_K = 34 , & ! 042 11-2 K
& B_L = 35 , & ! 043 11-3 L
& B_M = 36 , & ! 044 11-3 M
& B_N = 37 , & ! 045 11-4 N
& B_O = 38 , & ! 046 11-6 O
& B_P = 39 , & ! 047 11-7 P
& B_Q = 40 , & ! 050 11-8 Q
& B_R = 41 , & ! 051 11-9 R
& B_BANG = 42 , & ! 052 11-0 ! Minus zero
& B_DOLLAR = 43 , & ! 053 11-3-8 $
& B_ASTER = 44 , & ! 054 11-4-8 *
& B_RPAREN = 45 , & ! 055 11-5-8 )]
& B_SEMIC = 46 , & ! 056 11-6-8 ;
& B_DELTA = 47 , & ! 057 11-7-8 _ Delta
& B_AMPER = 48 , & ! 060 12 &
& B_A = 49 , & ! 061 12-1 A
& B_B = 50 , & ! 062 12-2 B
& B_C = 51 , & ! 063 12-3 C
& B_D = 52 , & ! 064 12-4 D
& B_E = 53 , & ! 065 12-5 E
& B_F = 54 , & ! 066 12-6 F
& B_G = 55 , & ! 067 12-7 G
& B_H = 56 , & ! 070 12-8 H
& B_I = 57 , & ! 071 12-9 I
& B_QMARK = 58 , & ! 072 12-0 ? Plus zero
& B_DECIMAL = 59 , & ! 073 12-3-8 .
& B_SQUARE = 60 , & ! 074 12-4-8 ¤ Lozenge
& B_LPAREN = 61 , & ! 075 12-5-8 ([
& B_LESS = 62 , & ! 076 12-6-8 <
& B_GRPMRK = 63 ! 077 12-7-8 "}
! Mutable encodings the Lexer cares about:
! A H S I
character :: At ! @ ' @ Ö
character :: Dev ! % ( % (
character :: Hash ! # = # Æ
character :: Plus ! & + & Ð
! gfortran 4.4.7 2012031 refuses to compile these:
! equivalence ( bcd_to_ascii(b_at), at )
! equivalence ( bcd_to_ascii(b_percnt), dev )
! equivalence ( bcd_to_ascii(b_hash), hash )
! equivalence ( bcd_to_ascii(b_amper), plus )
contains
integer function Char_To_Digit ( Char ) result ( Num )
! Convert a character to a 1401 signed digit
character, intent(in) :: Char
character(40) :: Ch = '0123456789|/STUVWXYZ!JKLMNOPQR?ABCDEFGHI'
integer, parameter :: S(0:3) = (/ 1, 1, -1, 1 /) ! Sign
ch(11:11) = bcd_to_ascii(b_recmrk)
num = index(ch,char)
if ( num == 0 ) then
num = -100000
else
num = mod(num-1,10) * s((num-1)/10)
end if
end function Char_To_Digit
subroutine Fill_Encoding ( Encoding )
! Fill BCD_to_ASCII and ASCII_to_BCD from Encoding, which is 63
! characters in BCD order. BCD 000 is assumed to be blank in every encoding
character(63), intent(in) :: Encoding
integer :: I, J
do j = 1, 63
bcd_to_ascii(j) = encoding(j:j)
i = iachar(bcd_to_ascii(j))
! lower-case to upper-case conversion, to make sure later upper-case to
! lower-case mapping works
if ( i >= 97 .and. i <= 122 ) i = i - 32 ! Latin-1 lower case
if ( i >= 224 .and. i <= 255 ) i = i - 32 ! national choice lower case
ascii_to_bcd(i) = j
! Lower case letters in Latin-1
if ( i >= 65 .and. i <= 90 ) ascii_to_bcd(i+32) = j
! Lower case letters in national choice area of 8859-1
if ( i >= 192 .and. i <= 223 ) ascii_to_bcd(i+32) = j
end do
end subroutine Fill_Encoding
subroutine Init_BCD_to_Ascii
at = bcd_to_ascii(b_at)
dev = bcd_to_ascii(b_percnt)
hash = bcd_to_ascii(b_hash)
plus = bcd_to_ascii(b_amper)
end subroutine Init_BCD_to_Ascii
end module BCD_TO_ASCII_M
!>> 2011-08-14 ASCII ~ maps to B_WM
!>> 2017-07-28 Work around gfortran 4.4.7 bug in Equivalence