TASM RELEASE NOTES

RELEASE DATE/VERSION    DESCRIPTION
-----------------------------------------------------------------------
10/01/85 Version 2.0    First version with external table def files.

01/01/86 Version 2.1    Added '*=' and '=' directives as
                        alternatives to .ORG and .EQU (for
                        more complete MOS Technology compatibility).
                        Enhanced parsing algorithm so it can
                        deal with more than one variable expression.
                        Added -d option

02/14/86 Version 2.2    Modified so instruction set definition
                        tables don't need to be compiled in.
                        Added 8051 tables.
                        Increased the number of labels allowed.

03/31/87 Version 2.3    Fixed bug that prevented location 0xffff
                        from being used and written to object file.
                        Most changes in wrtobj() and pr_hextab().

05/01/87 Version 2.4    Added multiple byte opcode support.
                        Added shift/or operation capability to
                        args from instruction set definition table.
                        Converted to MS C version 3.0
                        Added hashing to instruction set table
                        lookups to speed up.

11/01/87 Version 2.5    Added DB and DW directives.
                        Added escape capability in TEXT strings.
                        Fixed inst_lookup function to treat the
                        multiple wild card case a little better
                        Added 8080/8085 and Z80 tables.
                        Added sorting on label table.
                        Increased size of read buffer.
                        Speed enhancements.
                        Added DEFCONT (macro continuation) directive.
                        Converted to Microsoft C 5.0 compiler.
                        Added 6805 table (and related modops).
                        Added Z80 bit modop.
                        Minor speed up.
                        Fixed bug that enters infinite loop
                        when a macro invocation has no closing paren.
                        Added some three arg MODOPs.

8/15/88 Version 2.6.1   Added CODES/NOCODES directives
                        Fixed bug preventing directives in multiple
                        statement lines.
                2.6.2   Added COMB_NIBBLE and COMB_NIBBLE_SWAP MODOPS

2/1/89  Version 2.7     Removed ad hoc heap and now use malloc()
                        Added MSFIRST and LSFIRST directives.
                        Added EXPORT directive.
                        Added symbol table file (-s flag).
                        Added NSEG/CSEG/BSEG/DSEG/XSEG directives
                        and the SYM/AVSYM directives to support
                        the Avocet avsim51 simulator.
                        Added support for TMS320.
                        Added -r flag to set read buffer size.
                        Converted expression evaluation from 
                        signed 16 bit to signed 32 bit (enabling
                        apparent ability to use signed or unsigned
                        16 bit values).

4/20/89  Version 2.7.1  Return 0x20000 for undefined labels so that
                        (label+x) type stuff won't confuse zero
                        page addressing.
                        Added duplicate label error message on pass 1.

6/20/89  Version 2.7.2  Improved macro expansion capability.
                        No expansion in comments.
                        Context sensitive identifiers.
                        Revised exit codes.

6/27/89  Version 2.7.3  Added -a flag for strict error checking:
                         (1) No outer parens around expressions.
                         (2) Error message if unused argbytes remain 
                         (3) Duplicate labels
                        Fixed so ']' can terminate expressions.
                        Removed parse() from tasm.c

8/19/89  Version 2.7.4  Added Motorola hex object format.
                        Fixed bug that complained when \ immediately
                        followed a opcode with no args.
                        Slightly improved error reporting (Errorbuf).

10/31/89 Version 2.7.5  Added TMS7000 support.
                        Fixed argv[] bug (only dimensioned to 10 in pass1.

12/23/89 Version 2.7.6  Improved handling of % (modulo vs binary 
                        prefix ambiguity).
                        Fixed list so lines with more than  
                        6 bytes go on second line.

03/04/90 Version 2.7.7  Fixed bug that left off 2 bytes if ORG
                        went backwards and all 64K was used.
                        Added a command line option to ignore
                        case on labels.
                        Added a couple MODOP rules for TMS9900.
                        Allow double quoted text strings for BYTE.

04/15/90 Version 2.7.8  Fixed expression evaluator bug (paren popping)
                        and changed expression evaluator to a more
                        conventional left to right evaluation order.
                        Added TURBOC ifdef's (from Lance Jump).

08/20/90 Version 2.8    Primarily a documentation update.
                        Added error check for AJMP/ACALL off of
                        current 2K block (8051).

10/15/90 Version 2.8.1  Minor speed up in label searching.
                        Fixed word addressing for TMS320 
         Version 2.8.2  Local labels.
                        More label table format options (long form
                        suppress local labels).

11/30/90 Version 2.8.3  Turbo C conversion.
                        DS directive added.

12/27/90 Version 2.8.4  Added COMMENTCHAR directive to change the
                        comment indicator in the first column.
                        This was done to support the assembly
                        files from the small C compiler (sc11)
                        for the 68CH11.

02/14/91 Version 2.8.5  Added LOCALLABELCHAR directive to 
                        override the default "_" as the 
                        prefix for local labels.

03/18/91 Version 2.8.6  Added some MODOPs in support of TMS320C25

04/20/91 Version 2.8.7  Fixed sign extend bug in CSWAP modop.
                        Increased MAXLABS to 10000 for big version.

05/05/91 Version 2.8.8  Fixed pointer bug in debug output in sort_labels().

05/20/91 Version 2.9    TMS320C25 table along with some MODOP enhancements 
                        for it.
                        TASMTABS.DOC updated (but not TASM.DOC)

08/09/91 Version 2.9.1  Nested conditionals.

04/01/92 Version 2.9.2  Fixed long label clobber problem in
                        find_label() and save_label.  Syntax
                        errors could result in a comment line
                        after an instruction being lumped together
                        with a label resulting in a long label.
                        The label functions were not testing for 
                        labels that exceed the specified size.
                        Added CHK directive.
                        Added REL3 MODOD to support uPD75xxx.
                        Delinting and more ANSIfication.
                        Modifications due to feedback from B Provo:
                         Added FILL directive.
                         Allow multiple labels for EXPORT directive.
                         Allow address with END directive.
                        TASM.DOC update

11/25/92 Version 2.9.3  Improved error reporting for mismatched quotes.
                        Disallow the single quote character constants.
                        Convert to BCC++ 3.1
                        Provide filename,linenum on all error messages.
                        Modify format of error messages for compatibility
                        with the Brief editor.
                        Added ECHO directive to send output to console.
                        Performance improvements in macro processing.
                        "Type Safe" conversion (compatible with C++).
                        Improved error reporting for imbalanced ifdefs.

 
01/29/93 Version 2.9.4  Added rules for 8096 (I1,I2,I3,I4,I5,I6).
                        Generate error message on forward reference 
                        in EQUate statements.
                        Eliminated -a option for enabling the detection
                        of branches of 2K page for 8051.  This 
                        is now built into the table.
                        Allow white space in double quotes for BYTE
                        directive.  This previously worked for TEXT,
                        but not BYTE.
                        Fixed defect with Z80 4 byte indexed instructions.
                        Fixed macro defect.  If the macro definition has
                        args but the invocation does not some garbage
                        gets expanded into the source line.
                        Z80 OTDR opcode was incorrect.
                        Z80 IN0/OUT0/INA instructions did not require
                        the parens around the args.
                        Some experimental support for windows verson of TASM.

10/24/93 Version 3.0    Documentation update.  TASM.DOC, TASMTABS.DOC
                        and RELNOTES.DOC updated, but the functionality
                        remains unchanged from version 2.9.4.

06/16/94 Version 3.0.1  SPR 1006: Multiple macros on the same line
                        SPR 1007: -c with >8000h bytes used goes bonkers
                        SPR 1009: waddr correction for BLOCK/DS 
                        SPR 1011: Escaped quotes in TEXT

