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@@ -0,0 +1,485 @@ + + + README file for + + + Bywater BASIC Interpreter, version 3.20 + --------------------------------------------- + + Copyright (c) 1993, Ted A. Campbell + for bwBASIC version 2.10, 11 October 1993 + + Version 2.20 modifications by Jon B. Volkoff, + 25 November 1995 + + Patch level 1 release by Jon B. Volkoff, + 15 March 1996 + + Patch level 2 release by Jon B. Volkoff, + 11 October 1997 + + Version 2.30 modifications by Paul Edwards, + 5 March 2008 + + Version 2.40 modifications by Paul Edwards, + 26 Jan 2009 + + Version 2.50 modifications by Paul Edwards, + 4 June 2009 + + Version 2.60 modifications by Paul Edwards, + 6 November 2012 + + Version 2.61 modifications by Paul Edwards, + 4 August 2014 + + Version 3.00 modifications by Howard Wulf, AF5NE + 12 May 2015 + + Version 3.10 modifications by Howard Wulf, AF5NE + 27 July 2016 + + Version 3.20 modifications by Howard Wulf, AF5NE + 4 June 2017 + + + + +DESCRIPTION: + + The Bywater BASIC Interpreter (bwBASIC) implements a large + superset of the ANSI Standard for Minimal BASIC (X3.60-1978), + a significant subset of the ANSI Standard for Full BASIC + (X3.113-1987), and many classic BASIC dialects in C. bwBASIC + seeks to be as portable as possible. + + This version of Bywater BASIC is released under the terms of the + GNU General Public License (GPL), which is distributed with this + software in the file "COPYING". The GPL specifies the terms + under which users may copy and use the software in this distribution. + + A separate license is available for commercial distribution, + for information on which you should contact the author. + + + +OBTAINING THE SOURCE CODE: + + The source code for bwBASIC is available from + http://bwbasic.sourceforge.net + + +COMMUNICATIONS: + + email: tcamp@delphi.com (for Ted Campbell) + eidetics@cerf.net (for Jon Volkoff) + mutazilah@gmail.com (for Paul Edwards) + + +A LIST OF BASIC COMMANDS AND FUNCTIONS IMPLEMENTED in bwBASIC: + + The complete list of over 500 commands, functions and operators is + in the file "ALL.txt" in the DOCS directory. Documentation for each + dialect is also in the DOCS directory. Be aware that the commands, + functions and operators available depend upon the particular BASIC + dialect selected using the OPTION VERSION command. + + +CHANGE HISTORY + +CHANGES FROM 3.10 to 3.20 + + * Implements most of the following BASIC dialects: + OPTION VERSION "BYWATER" ' Bywater BASIC 3 + OPTION VERSION "BYWATER-2" ' Bywater BASIC 2 + OPTION VERSION "CALL/360" ' SBC CALL/360 Mainframe BASIC + OPTION VERSION "CBASIC-II" ' CBASIC-II for CP/M + OPTION VERSION "DARTMOUTH" ' Dartmouth DTSS BASIC + OPTION VERSION "ECMA-55" ' ANSI Minimal BASIC + OPTION VERSION "ECMA-116" ' ANSI Full BASIC + OPTION VERSION "GCOS" ' GE 600 Mainframe BASIC + OPTION VERSION "HAARDT" ' bas 2.4 by Michael Haardt + OPTION VERSION "HANDBOOK1" ' The BASIC Handbook, 1st Edition + OPTION VERSION "HANDBOOK2" ' The BASIC Handbook, 2nd Edition + OPTION VERSION "HEATH" ' Heath Benton Harbor BASIC + OPTION VERSION "MARK-I" ' GE 265 Mainframe BASIC + OPTION VERSION "MARK-II" ' GE 435 Mainframe BASIC + OPTION VERSION "MBASIC" ' Microsoft BASIC-80 for Xenix + OPTION VERSION "PDP-8" ' DEC PDP-8 BASIC + OPTION VERSION "PDP-11" ' DEC PDP-11 BASIC + OPTION VERSION "RBASIC" ' Micronics RBASIC for 6809 FLEX + OPTION VERSION "RSTS-11" ' DEC RSTS-11 BASIC-PLUS + OPTION VERSION "SYSTEM/360" ' IBM System/360 Mainframe BASIC + OPTION VERSION "SYSTEM/370" ' IBM System/370 Mainframe BASIC + OPTION VERSION "TRS-80" ' TRS-80 Model I/III/4 LBASIC + OPTION VERSION "VINTAGE" ' Vintage BASIC 1.0.1 + OPTION VERSION "XBASIC" ' TSC XBASIC for 6800 FLEX + + * CONST variable [, ...] = value + Assigns the value to variable. + Any later assignment to the variable causus a VARIABLE NOT DECLARED error. + + * DIM now supports lower and upper bounds. + OPTION BASE 1 + DIM X( 9 ) ' lower bound is 1 + DIM Y( 5 TO 9 ) ' lower bound is 5 + + * DIM now supports virtual variables. + OPTION BASE 1 + OPEN "VIRTUAL.DAT" FOR VIRTUAL AS # 3 ' virtual data file + DIM # 3, A( 1000 ) ' array is virtual + LET A( 1000 ) = 0 ' value is written to the file + LET X = A( 1000 ) ' value is read from the file + CLOSE # 3 ' array is no longer valid + + * ERROR 27, "Bad DATA" + Occurs when the READ command detects garbage in a DATA command. + + * INPUT LINE + Same as LINE INPUT. + + * MAT now supports lower and upper bounds. + OPTION BASE 1 + MAT X( 9 ) = ZER ' lower bound is 1 + MAT Y( 5 TO 9 ) = ZER ' lower bound is 5 + MAT X = ZER( 9 ) ' lower bound is 1 + MAT Y - ZER( 5 TO 9 ) ' lower bound is 5 + + * MAXLEN() + Returns the maximum string length. + + * OPTION DIGITS integer + Sets the number of significant digits for PRINT. + Setting the value to zero restores the default. + + * OPTION EDIT string$ + Sets the program name used by the EDIT command. + Setting this to "" disables EDIT command. + + * OPTION FILES string$ + Sets the program name used by the FILES command. + Setting this to "" disables FILES command. + + * OPTION PROMPT string$ + Sets the prompt. + + * OPTION PUNCT AT char$ + Sets the PRINT AT character, commonly "@". + Setting this to "" disables PRINT AT. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT BYTE char$ + Sets the BYTE type suffix, commonly "~". + Setting this to "" disables BYTE suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT COMMENT char$ + Sets the trailing COMMENT character, commonly "'". + Setting this to "" disables trailing comments. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT CURRENCY char$ + Sets the CURRENCY type suffix, commonly "@". + Setting this to "" disables CURRENCY suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT DOUBLE char$ + Sets the DOUBLE type suffix, commonly "#". + Setting this to "" disables DOUBLE suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT FILENUM char$ + Sets the FILE NUMBER prefix, commonly "#". + Setting this to "" disables the FILE NUMBER prefix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT IMAGE char$ + Sets the shortcut IMAGE character, commonly ":". + Setting this to "" disables the shortcut IMAGE character. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT INPUT char$ + Sets the shortcut INPUT character, commonly "!". + Setting this to "" disables the shortcut INPUT character. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT INTEGER char$ + Sets the INTEGER type suffix, commonly "%". + Setting this to "" disables INTEGER suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT LONG char$ + Sets the LONG type suffix, commonly "&". + Setting this to "" disables LONG suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT LPAREN char$ + Sets the LEFT PARENTHESIS character, commonly "(". + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT PRINT char$ + Sets the shortcut PRINT character, commonly "?". + Setting this to "" disables the shortcut PRINT character. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT QUOTE char$ + Sets the QUOTE character, commonly """". + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT RPAREN char$ + Sets the RIGHT PARENTHESIS character, commonly ")". + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT SINGLE char$ + Sets the SINGLE type suffix, commonly "!". + Setting this to "" disables SINGLE suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT STATEMENT char$ + Sets the shortcut STATEMENT seperator character, commonly ":". + Setting this to "" disables the STATEMENT seperator. + Setting this to a non-punctuation character is not supported. + + * OPTION PUNCT STRING char$ + Sets the STRING type suffix, commonly "$". + Setting this to "" disables STRING suffix. + Setting this to a non-punctuation character is not supported. + + * OPTION RECLEN integer + Sets the default record length for RANDOM files, commonly 128. + Setting thisto zero means there is no default RANDOM record + length, so the record length must be specified in the OPEN + statement. + With OPTION RECLEN 128: + OPEN "FILE.DAT" FOR RANDOM AS #3 + is considered to be the same as + OPEN "FILE.DAT" FOR RANDOM AS #3 LEN 128 + With OPTION RECLEN 0: + OPEN "FILE.DAT" FOR RANDOM AS #3 + causes an error. + + * OPTION RENUM string$ + Sets the program name used by the RENUM command. + Setting this to "" disables RENUM command. + + * OPTION SCALE integer + Sets the number of digits to round after the decimal point for PRINT. + Setting the value to zero disables rounding. + + * OPTION USING DIGIT + * OPTION USING COMMA + * OPTION USING PERIOD + * OPTION USING PLUS + * OPTION USING MINUS + * OPTION USING EXRAD + * OPTION USING DOLLAR + * OPTION USING FILLER + * OPTION USING LITERAL + * OPTION USING FIRST + * OPTION USING ALL + * OPTION USING LENGTH + Sets the characters recognized by PRINT USING. + Setting these to a non-punctuation character is not supported. + + * OPTION VERSION now requires a string instead of a literal. + Some version names have changed. + + * OPTION VERSION "PDP-8" + Added LPT, PTP, PTR, TTY, TTY IN and TTY OUT commands. + Added GET() and PUT() functions. + + * OPTION VERSION "CALL/360" + * OPTION VERSION "SYSTEM/360" + * OPTION VERSION "SYSTEM/370" + Added alphabet extenders. $ is a string variable. + + * OPTION ZONE integer + Sets the PRINT zone width. + Setting the value to zero restores the default. + + * REPEAT - UNTIL added + REPEAT + ... + EXIT REPEAT + ... + UNTIL expression ' exits when expression != 0 + + * SPC( X ) and TAB( X ) + No longer use control codes. + + * UNTIL - UEND removed (to add REPEAT - UNTIL) + Here is a work-around for existin code using UNTIL-UEND: + UNITL expression -->> WHILE NOT expression + ... ... + EXIT UNTIL -->> EXIT WHILE + ... ... + UEND -->> WEND + + * from Howard Wulf, AF5NE + + +CHANGES FROM 3.00 to 3.10 + + * Implements most of the following BASIC dialects: + OPTION VERSION DARTMOUTH ' Dartmouth DTSS BASIC + OPTION VERSION MARK-I ' GE 265 Mainframe BASIC + OPTION VERSION MARK-II ' GE 435 Mainframe BASIC + OPTION VERSION SYSTEM-360 ' IBM System/360 BASIC + OPTION VERSION SYSTEM-370 ' IBM System/370 BASIC + OPTION VERSION CBASIC-II ' CBASIC-II for CP/M + OPTION VERSION ECMA-55 ' ANSI Minimal BASIC + OPTION VERSION HANDBOOK1 ' The BASIC Handbook, 1st Edition + OPTION VERSION HANDBOOK2 ' The BASIC Handbook, 2nd Edition + OPTION VERSION TRS-80 ' TRS-80 Model I/III/4 LBASIC + OPTION VERSION BASIC-80 ' Microsoft BASIC-80 for Xenix + OPTION VERSION ECMA-116 ' ANSI Full BASIC + + * from Howard Wulf, AF5NE + + +CHANGES FROM 2.61 to 3.00 + + * Code redesign from Howard Wulf, AF5NE + + +CHANGES FROM 2.60 to 2.61 + + * Bug fix from Matthias Rustler + + +CHANGES FROM 2.50 to 2.60 + + * New maths functions and append mode support from Edmond Orignac + + * Bug fixes + + +CHANGES FROM 2.40 to 2.50 + + * Bug fixes + + * New compilation procedure for MVS and CMS + + +CHANGES FROM 2.30 to 2.40 + + * Bug fixes from Bill Chatfield + + * Updated documentation + + * Added support for compiling on CMS (another IBM mainframe OS) + + +CHANGES FROM 2.20pl2 to 2.30 + + * Minor bug fixes, cosmetic improvements and portability improvements + + * Added support for compiling on MVS (IBM mainframe) + + +CHANGES FROM 2.20pl1 to 2.20pl2 + +bwb_cmd.c + Fixed calling stack level logic in RETURN statement to prevent erroneous + "RETURN without GOSUB" messages. + +bwb_cnd.c +bwb_stc.c + + Changed continuation condition for WHILE, ELSEIF, and LOOP UNTIL + to be != FALSE, not == TRUE. More in line with common commercial + BASIC implementations. + +bwb_mth.c + Fixed initialization in VAL function so that old results are not later + returned as values. + +bwb_var.c + Added parenthesis level checking to dim_getparams. Using multi-level + expressions as array subscripts was causing the program to bomb. + +bwx_iqc.c +bwx_tty.c +bwb_mes.h + Added second copyright notice. + +bwb_dio.c +bwb_str.c + Added support for strings longer than 255 characters. + +bwb_prn.c + Disabled tab expansion and print width checks when not printing to a file. + +bwb_inp.c + Fixed LINE INPUT file reads to accommodate strings of length MAXSTRINGSIZE. + +bwx_ncu.h +bwx_ncu.c + New files. Code for UNIX ncurses interface, compliments of L.C. Benschop, + Eindhoven, The Netherlands. + +Makefile.ncu + New files. Sample makefile for ncurses implementation. + +bwbasic.h + Revised defines for MININTSIZE and MAXINTSIZE from 16-bit to 32-bit limits. + Revised define for MAXSTRINGSIZE from 255 to 5000 characters. + Changed string length from unsigned char to unsigned int to support strings + longer than 255 characters. + Added support for new ncurses package. + Revised VERSION define to reflect above changes. + + +CHANGES FROM 2.20 to 2.20pl1 + +bwb_cnd.c + + Moved init routine for bwb_while so that it would be initialized regardless + of expression value, not just if TRUE. This was causing some segmentation + faults in WHILE-WEND loops. + +bwb_elx.c + + Plugged gaping memory leak. Temp variable space for expression evaluation + was being allocated but not freed when done (oops!). + +bwb_fnc.c + + Added check for NULL return from getenv to prevent segmentation faults. + +bwbasic.h + Revised VERSION define to reflect above changes. + + + +CHANGES FROM 2.10 to 2.20: + + * Plugged numerous memory leaks, resolved memory overruns and allocation + difficulties. + + * General cleanup and bug fixes, too many to list in detail here. + The major problem areas addressed were: + + - RUN command with file name argument + - nested and cascaded FOR-NEXT loops + - PRINT USING + - EOF, LOF functions + - string concatenation + - operator hierarchy + - multi-level expression evaluation + - hex constant interpretation + - hex and octal constants in INPUT and DATA statements + + * Added a CLOSE all files feature (when no argument supplied). + + * Added a unary minus sign operator. + + * Added a MID$ command to complement the MID$ function. + + * Added a RENUM facility in a standalone program. + + * Added checking in configure for unistd.h (important on Sun systems). + + + + |