Code: 2005-03-30 Vasil Ivanov from http://forum.nedopc.org
* Version 1.33 -- changes were done directly in generated zmac.c
* All messages stderr now go to stdout to be able to redirect everything to 1 file
* Fixed issue in new function doincbin() that caused "phase error".
2005-02-25 Vasil Ivanov from http://forum.nedopc.org
* Version 1.32 -- changes were done directly in generated zmac.c
* Put all labels starting with @ to file .tbl
* Added directive INCBIN to include binary file
* Note: Quotation is not needed for include and incbin
* Note: This assembler doesn't know undocumented instructions
2005-02-?? Vasil Ivanov from http://forum.nedopc.org
* Version 1.31 -- changes were done directly in generated zmac.c
* Some changes from above (sources were lost)
2000-07-02 Mark RISON <mrison@hotmail.com>
* Version 1.3.
* Improve man page (including portability fixes by Tim).
* From Matthew, Tim and Russell: compiler warning avoidance.
2000-06-25 Mark RISON <mrison@hotmail.com>
* Version 1.3b4.
* Allow benign EQU redefinition.
* Cut down on warnings in pass 1.
* Find and (hopefully!) fix nasty bug in error recovery in arglists.
* Allow JP HL/IX/IY syntax. A warning is issued.
* Revamp man page.
* From Tim Mann: resolve r/r conflict for parentheses in expressions.
2000-06-18 Mark RISON <mrison@hotmail.com>
* Version 1.3b3.
* BeOS now supported (just treat as a Un*x variant!).
* Upgrade to bison 1.28 so alloca () no longer a problem.
* Document the operator zoo.
* Allow normal parentheses in expressions.
(FIXME: is there a way to tell bison the r/r conflict is OK?)
* From Tim Mann: sort out operator precedence; make it C-like.
2000-05-25 Mark RISON <mrison@hotmail.com>
* Version 1.3b2.
* Fix error handling fix (with Tim's help!).
* From Tim Mann: add relationals and synonyms for NOT, MOD, SHL, SHR.
2000-03-18 Mark RISON <mrison@hotmail.com>
* Version 1.3b1.
* Fix error handling.
* Allow a leading colon or no special character at all
to introduce a label.
* Allow $ and # to introduce hex constants.
* Allow COND and ENDC as synoyms for IF and ENDIF.
* More ANSI C pedantry.
* From Tim Mann: remove the nasty and buggy hack to allow AND,
OR and XOR to be used as binary operators and do it properly.
* From Tim Mann: fix bug which prevented & from being used as
a binary operator when it was allowed to introduce a hex constant.
* From Matthew Phillips: try filename as given before trying
to add a '.z' extension.
2000-02-27 Mark RISON <mrison@hotmail.com>
* Version 1.2.
* Stop trying to add an extension to INCLUDEd files
(this stupid idea was a misfeature introduced in 1.1.1.1).
Instead, define canonical form, which is automatically
decanonicalised according to the local OS requirements
(see the man page for more details).
* Add support for RISC OS.
* Increase the maximum number of IFs to 1024.
* Issue warning when SLL is used.
* Further ANSI C-ify.
(FIXME: anyone know how to convince bison not to use alloca ()?)
* Tweak command-line error reporting.
* Remove legacy non-ANSI C garbage.
* From Matthew Phillips: add support for outputting AMSDOS header.
* From Matthew Phillips: add support for RISC OS DDE throwback.
2000-02-11 Russell Marks <russell.marks@dtn.ntl.com>
* zmac.1: updated man page.
* zmac.y: changed `-O' warning output to look more like gcc
(`foo.z:N: warning: wibble' rather than `foo.z:N: wibble
warning').
* zmac.y: changed to use my old getoptn() getopt clone instead of
`real' getopt(), as I know Mark likes his portability :-) (and it
probably wouldn't work on DOS otherwise, which even I would like
it to...).
* zmac.y: merged in changes (relative to 1.1) from my current
zmac. These were:
* zmac.y: minor changes to avoid egcs/gcc `ambiguous else'
warnings.
* zmac.y: changes from Chris Smith [slightly changed to fit zmac
1.1.1.x]. `-o' now specifies output file; `-x' specifies listing
file (`-x -' does the same as the old `-o' option); the
undocumented `sll' opcode is now allowed; "Cannot open foo file"
errors now give the filename; a `.z' extension is only added to
source filename if it has no extension; args are now parsed with
getopt().
* Makefile: fix missing dependencies for zmac.
1999-10-03 Mark RISON <mrison@hotmail.com>
* Version 1.1.1.2.
* Fix bug in nested ELSEs.
* Pad .bin file when multiple ORGs are used.
* `-O' option invokes optimisation suggester
for JP, RLC/RRC/RL/RR/SLA A and LD A, 0.
* Reinstate 0x02, 0x0a, 0x12 and 0x1a as valid 8080 opcodes.
* Add zmac.c to .zip file (for those who don't have yacc/bison).
* Make makefile no longer depend on GNU make implicit rules.
1999-07-18 Mark RISON <mrison@hotmail.com>
* Version 1.1.1.1 (nee 1.1.1).
* Extend symbol significance from 15 to 40 chars.
A warning is issued regarding truncated symbols.
* Make continuous listing be the default.
* Add ELSE to IF/ENDIF construct.
* Allow INCLUDE filename to be delimited by " or '.
* Allow labels to be defined using .name (as well as name:).
* Allow ADD/SBC/ADD s syntax (implicit "A, ").
A warning is issued.
* Issue warning for SUB/AND/XOR/OR/CP A, s syntax (explicit "A, ").
* Issue warning for CMP and JMP opcodes, and V and NV condition codes.
* Catch division by zero in expressions.
* Allow hex constants to be specified using a leading '&'.
(FIXME: what's all this testing of nextchar () against '$' for?)
* Add DB, DEFM and TEXT as synonyms for DEFB.
* Add DS and RMEM as synonyms for DEFS.
* Add DW as synonym for DEFW.
* Add READ as synonym for INCLUDE.
* Allow strings to be specified using " too.
* Allow AND, OR and XOR to be used as binary operators.
(FIXME: a bit of a nasty hack; can it be done more cleanly?)
* Make file handing consistent for source and INCLUDE:
for both, try to open with ".z" first, then with no extension.
1998-12-15 Russell Marks <rus@lifeson>
* Version 1.1.
* Added support for --help and --version.
* zmac.1: mentioned `title' pseudo-op.
* Converted revision history from zmac.y into Emacs change log
format (roughly).
* Now outputs errors more like a C compiler (one per line,
prefixed with filename and line-in-file), useful for `M-x compile'
in Emacs. New `-S' option makes it show the error-causing line
like it used to.
* Made it output current file for error reports.
* Added `void' to prototypes for funcs with no args.
* Removed unnecessary `char *ctime()' and `fflush(stderr)'.
* Made it support filenames longer than 14 chars!
1998-02-26 Russell Marks <rus@lifeson>
* Version 1.0 (for the sake of argument).
* Made usage message say what the program is. :-)
1998-02-12 Russell Marks <rus@lifeson>
* Added verbose inline errors in listing and made the original
terse one-letter ones available via new `-t' option.
* Added `-c' option to produce continuous listing (no page breaks
or page headers).
* Corrected plurals in listing so you don't get things like "1
symbols" any more.
* Added `-z' option to output 8080-compatible code only - i.e., to
flag Z80-specific ops as errors.
1998-02-11 Russell Marks <rus@lifeson>
* Fixed LIST-without-args segfault.
* Allowed decimal constants to be up to 65535 (rather than up to
32767 before; I checked and there was no reason for the previous
exception for decimal even on systems with 16-bit ints).
* Removed the `-d' debug option.
* Removed the `-t' option. It did everything as normal *except*
for not reporting errors. I can't imagine any valid reason for
wanting that.
* Made exit status 1 if there were errors in the assembly.
* Fixed `equ' bug - it now detects forward refs to `equ's with
forward refs and flags them as errors (because of course you'd
need three passes to resolve them). The fix is pretty
nasty-looking but it was really the only way I could see to do it.
Some assemblers (e.g. Hisoft's GENS4) don't allow forward refs in
`equ's at all, so count yourselves lucky! :-)
* Changed symbol table listing so it fits in 80 columns.
* Fixed `if' to not depend on internals of yacc parser (which
appear to have changed, anyway).
* Added support for normal `rst' format (0, 8, 10h, 18h...; still
allows the previous 0, 1, 2, 3...).
* Made default output binary (as .bin), added `-h' to get .hex.
* ANSIfied the thing (painful!) and cleaned up a little.
1987-02-05 Colin Kelley
* Added 'cmp' as a synonym for 'cp', 'jmp' as a synonym for 'jp',
and added tolerance of accumulator specification for arithmetic
and logical instructions. (For example, 'or a,12' is now accepted,
same as 'or 12'.)
1987-01-18 Colin Kelley
* Added MIO code to emulate 'mfile' using malloc()'d memory. This
was needed to get the code to work when compiled under MSC 4.0 on
a PC, and it's probably faster anyway.
1986-10-02 Colin Kelley
* Added some more typecasts to keep lint a little happier. Removed
several unused variables. Changed most vars declared as char to
int, since many of them were being compared with -1! I still don't
know what's going on with est[][] being malloc'd and free'd
everywhere...it looks pretty fishy...
1986-09-20 Colin Kelley
* Converted to run on a Pyramid. This meant changing yylval to be
a %union, and then putting in the appropriate typecasts where ints
are pointers are used interchangeably. The current version still
probably won't run on machines where
sizeof(int) != sizeof(char *).
Also changed emit() to use varargs, and got rid of the old
style = in front of yacc action code.
1984-08-27 John Providenza
* Added PHASE/DEPHASE commands.
1984-05-22 John Providenza
* Added include files ala ormac.
1984-05-11 John Providenza
* Added code to print unused labels out with the symbol table.
Also sped up the macro processor by using stdio.
1983-06-07 John Providenza
* Fixed bug in the ADD IX,... instruction.
1983-02-15 John Providenza
* Fixed 'getlocal' to return better local labels. It used to crash
after 6 invocations.
1982-03-15 John Providenza
* Changed maximum number of characters in a label to 15 from 7.
Note that 'putsymtab' uses this value inside of a quoted string,
so we use 15.
* Added underscore as a character type in the lex table 'numpart'
(0x5F).
1982-03-08 John Providenza
* Converted to run on Vax, updated syntax to conform better to the
Zilog standard.
1978-04-?? Bruce Norskog
* Initial version.
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