--- /dev/null
+## [1.3] - 1998-03-18
+- Added intrinsic transcendental functions for constant literal
+ expressions (pi, sin, cos, tan atan, asin, acos, exp, ln, log, pow)
+- Added warnings for control register load/use hazards
+- More sophisticated constant expression evaluation including
+ implicit float/integer conversion. Results of expressions are
+ typed and so formatted in the listing and symbol table.
+- Various fixes including stray pointers, etc. (Thanks to Dirk Farin
+ farindk@trick.informatik.uni-stuttgart.de)
+
+## [1.2] - 1994-05-02
+Andreas Gustafsson <gson@joker.cs.hut.fi>
+- Added DS and DSM directives
+- Generalization of the use of "*" allowing current program counter
+ to be used in any expression (including "org l:*" which is useful
+ for changing spaces without changing the PC)
+- Noted a bug with MOVEP to a non-symbolic I/O address. I believe
+ this is now fixed.
+- Noted that mispelled argumentless operators will be treated as
+ labels. For example, N0P (N-zero-P) will be treated as a label.
+ Unfortunately, my own use of a56 (i.e. using cpp as the macro
+ pre-processor) complicates this. However, the grammar might have
+ been simpler if the lexical analyzer was able to distinguish
+ between label declarations and references instead of leaving that
+ up to the YACC parser.
+
+Tim Channon <tchannon@black.demon.co.uk> and Peter Breuer
+<ptb@comlab.ox.ac.uk>
+- Missing ";" in grammar!
+
+Rober Ganter <ganter@ifi.unibas.ch>
+- Fixed bad comment on line 10 of a56.y
+
+Quinn C. Jensen <jensenq@zdomain.com>
+- Listing now includes psect usage summary
+- Better checking of movec arguments
+- Added int(value) function to convert floating point constant
+ expression to integer (by truncation)
+- Correctly convert a floating -1.0 to 0x800000
+- Wrote a new lexical analyzer and lexical parser generator
+- Many other minor enhancements and fixes.
+- Ported to DOS using DJ Delories' GCC port. (Tools available
+ at ftp://omnigate.clarkson.edu/pub/msdos/djgpp)
+
+## [1.1] - 1992-08-06
+- Jcc, JScc, Tcc recognizes "CC" synonym for "HS" (Tom)
+- LUA syntax fixed (Tom, Stephen)
+- DIV syntax fixed (Tom)
+- XY move fixed (Tom, Stephen)
+- a56 now detects phase errors (changes in symbol values
+ between pass 1 and 2)
+- several causes of phase errors fixed
+- immediate value handling improved for both integer and
+ fixed-point values
+- symbols have type (INT or FLOAT)
+- cpp droppings are properly handled
+- ALIGN pseudo-op added
+- Many thanks to Tom Cunningham at Motorola who noted several bugs,
+ fixing most of them. Thanks also to Stephen Edwards at CalTech for
+ his fixes as well. Both he and Tom fixed up the XY parallel move
+ code; I believe all the fixes are integrated.
+
+## [1.0] - 1991-11-28
+- Initial version
+
+--
+Copyright (C) 1990-1998 Quinn C. Jensen
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and
+that both that copyright notice and this permission notice appear in
+supporting documentation. The author makes no representations about
+the suitability of this software for any purpose. It is provided "as
+is" without express or implied warranty.
\ No newline at end of file
--- /dev/null
+a56 - a DSP5600X assembler
+---------------------------------------------------------------------
+OVERVIEW
+This program was written as a vehicle to learn the intricacies
+of the DSP56001 instruction set, and to provide a tool for Unix-based
+DSP code development (for those of us without a NeXT machine.)
+
+The intent was to provide compatibility with Motorola assembler's
+syntax. But since the author did not have Motorola's assembler or its
+documentation, it is no doubt far from compatible. Only a few
+pseudo-ops are implemented-- probably only partially.
+
+Macros are not supported, except through the use of an external macro
+preprocessor, such as /lib/cpp. To facilitate cpp macro expansion,
+multiple assembler statements on a single input line are delimited
+with an '@', e.g.:
+
+ #define JCHEQ(c,label) move #c,x0 @cmp x0,a @jeq label
+
+ #define JCHNE(c,label) move #c,x0 @cmp x0,a @jne label
+
+SUPPORTED PSEUDO-OPS
+The following is a list of the pseudo-ops that are recognized:
+
+ <symbol> = <expression> ;assign a symbol
+ <label> EQU <expression> ;ditto
+
+ ALIGN <number> ;set location pointer
+ ;to next integral
+ ;multiple of <number>
+
+ ORG <space:> <expression> ;new location pointer
+ ORG <space:> <expression>, <space:> <expression>
+
+ DC <dc_list> ;declare constants
+
+ DS <number> ;reserve <number>
+ ;words of space
+
+ <label> DSM <number> ;reserve space for
+ ;properly aligned
+ ;modulo-addressed
+ ;buffer of size
+ ;<number>, assigning
+ ;the aligned starting
+ ;address to <label>
+
+ PAGE <number>, <number>, <number>, <number>
+ ;ignored
+
+ INCLUDE <file> ;file inclusion
+
+ END ;end
+
+In addition, a "PSECT" pseudo-op was implemented. It allows program
+sections to be defined and bopped in and out of, each with its own
+location counter and space. The Motorola assembler probably does not
+have this pseudo-op, but no doubt supports the concept in some way.
+
+ PSECT <name> <space:><begin_addr>:<end_addr>
+ ;define
+
+ PSECT <name> ;switch to psect <name>
+
+FUTURE DIRECTION
+The assembler probably generates bogus code here and there, and no doubt
+does not handle all of the syntax. I welcome all comments, fixes and
+enhancements.
+
+TO MAKE AND USE
+
+Type "make".
+
+The resulting program, a56, is used as follows:
+
+ a56 [-b] [-l] [-o output-file] file [...]
+
+An assembler listing is sent to the standard-output and an
+ascii-formatted object file (a56.out) is produced. The "-b" option
+adds binary to the listing. "-l" causes included files to be listed.
+"-o" directs the output to the specified file rather than the
+default, a56.out.
+
+A separate program, toomf, converts a56.out into "OMF" format
+suitable for downloading to the 56001 via the sloader.a56 program.
+
+ toomf < a56.out > file.omf
+
+Known bugs/deficiencies:
+- MOVE to a control reg generates bogus code (always use MOVEC,
+ MOVEM, and MOVEP)
+
+Wish list
+- Add support for new instructions and modes
+
+AUTHOR
+Quinn C. Jensen
+1374 N 40 E
+Orem, UT 84057
+
+http://www.zdomain.com/~jensenq/
+
+home: jensenq@zdomain.com (preferred address for a56 correspondence)
+work: jensenq@novell.com
+
+Copyright (C) 1990-1998 Quinn C. Jensen
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and
+that both that copyright notice and this permission notice appear in
+supporting documentation. The author makes no representations about
+the suitability of this software for any purpose. It is provided "as
+is" without express or implied warranty.
\ No newline at end of file
+++ /dev/null
-
- a56 - a DSP56001 assembler - version 1.1
-
-/*
- * Copyright (C) 1990-1992 Quinn C. Jensen
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. The author makes no representations
- * about the suitability of this software for any purpose. It is
- * provided "as is" without express or implied warranty.
- *
- */
-
-V1.1 CHANGES
-
-Many thanks to Tom Cunningham at Motorola who noted several bugs, fixing
-most of them. Thanks also to Stephen Edwards at CalTech for his fixes as well.
-Both he and Tom fixed up the XY parallel move code; I believe all the
-fixes are integrated.
-
-Summary of changes since v1.0:
-
- - Jcc, JScc, Tcc recognizes "CC" synonym for "HS" (Tom)
- - LUA syntax fixed (Tom, Stephen)
- - DIV syntax fixed (Tom)
- - XY move fixed (Tom, Stephen)
- - a56 now detects phase errors (changes in symbol values
- between pass 1 and 2)
- - several causes of phase errors fixed
- - immediate value handling improved for both integer and
- fixed-point values
- - symbols have type (INT or FLOAT)
- - cpp droppings are properly handled
- - ALIGN pseudo-op added
-
-Known bugs/deficiencies:
-
- - MOVE to a control reg generates bogus code (always use MOVEC,
- MOVEM, and MOVEP)
-
-The example code has been cleaned up a bit and I've included my
-56K board's envelope code - tdsg.basic.a56. This code is specific to
-my implimentation.
-
-A note on the reverb code - I have since found since posting version 1.0
-that the reverb code has a great-big almost-DC bumb in its impulse
-response. I found this after doing some simulations. I suspected something
-was wrong because I had to scale the output of the comb filters by .046
-or something before going into the two all-pass stages. Overall I think it
-works better without the 1.7 ms all-pass. There's another reverb example
-on Dr. Bubb that fits Moorer's 1979 model better. I've included this in
-the examples but I have not yet assembled or tried it.
-
-OVERVIEW
-
-This program was written as a vehicle to learn the intricacies
-of the DSP56001 instruction set, and to provide a tool for Unix-based
-DSP code development (for those of us without a NeXT machine.)
-
-The intent was to provide compatibility with Motorola assembler's syntax.
-But since the author did not have Motorola's assembler or its documentation,
-it is no doubt far from compatible. Only a few pseudo-ops are implemented--
-probably only partially.
-
-Macros are not supported, except through the use of an external macro
-preprocessor, such as /lib/cpp. To facilitate cpp macro expansion, multiple
-assembler statements on a single input line are delimited with an '@', e.g.:
-
- #define JCHEQ(c,label) move #c,x0 @cmp x0,a @jeq label
-
- #define JCHNE(c,label) move #c,x0 @cmp x0,a @jne label
-
-
-SUPPORTED PSEUDO-OPS
-
-The following is a list of the pseudo-ops that are recognized:
-
- <symbol> = <expression> ;assign a symbol
-
- ALIGN <number> ;set location pointer
- ;to next integral
- ;multiple of <number>
-
- ORG <space:> <expression> ;new location pointer
- ORG <space:> <expression>, <space:> <expression>
-
- DC <dc_list> ;declare constants
-
- PAGE <number>, <number>, <number>, <number> ;ignored
-
- INCLUDE <file> ;file inclusion
-
- END ;end
-
-In addition, a "PSECT" pseudo-op was implemented. It allows program sections
-to be defined and bopped in and out of, each with its own location counter and
-space. The Motorola assembler probably does not have this pseudo-op, but no
-doubt supports the concept in some way.
-
- PSECT <name> <space:><begin_addr>:<end_addr> ;define
-
- PSECT <name> ;switch to psect <name>
-
-
-FUTURE DIRECTION
-
-The assembler probably generates bogus code here and there, and no doubt
-does not handle all of the syntax. I welcome all comments, fixes and
-enhancements.
-
-TO MAKE AND USE
-
-Type "make". gram.c and lex.yy.c are provided for those without yacc
-(or bison) and/or lex.
-
-The resulting program, a56, is used as follows:
-
- a56 [-b] [-l] [-o output-file] file [...]
-
-An assembler listing is sent to the standard-output and an ascii-formatted
-object file (a56.out) is produced. The "-b" option adds binary to the listing.
-"-l" causes included files to be listed. "-o" directs the output to the
-specified file rather than the default, a56.out.
-
-A separate program, toomf, converts a56.out into "OMF" format suitable for
-downloading to the 56001 via the sloader.a56 program.
-
- toomf < a56.out > file.omf
-
-AUTHOR
-
-11/28/91
-v1.1 8/6/92
-
-Quinn C. Jensen
-1374 N 40 E
-Orem, UT 84057
-
-home: jensenq@zdomain.com (preferred address for a56 correspondence)
-work: jensenq@novell.com
+++ /dev/null
-
- a56 - a DSP56001 assembler - version 1.2
-
-/*
- * Copyright (C) 1990-1994 Quinn C. Jensen
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. The author makes no representations
- * about the suitability of this software for any purpose. It is
- * provided "as is" without express or implied warranty.
- *
- */
-
-V1.2 CHANGES
-
-Contributors to V1.2 -
-
- Andreas Gustafsson <gson@joker.cs.hut.fi>
- - Added DS and DSM directives
- - Generalization of the use of "*" allowing current program counter
- to be used in any expression (including "org l:*" which is useful
- for changing spaces without changing the PC)
- - Noted a bug with MOVEP to a non-symbolic I/O address. I believe
- this is now fixed.
- - Noted that mispelled argumentless operators will be treated as
- labels. For example, N0P (N-zero-P) will be treated as a label.
- Unfortunately, my own use of a56 (i.e. using cpp as the macro
- pre-processor) complicates this. However, the grammar might
- have been simpler if the lexical analyzer was able to distinguish
- between label declarations and references instead of leaving that
- up to the YACC parser.
-
- Tim Channon <tchannon@black.demon.co.uk> and Peter Breuer
- <ptb@comlab.ox.ac.uk>
- - Missing ";" in grammar!
-
- Rober Ganter <ganter@ifi.unibas.ch>
- - Fixed bad comment on line 10 of a56.y
-
- Me <jensenq@zdomain.com>
- - Listing now includes psect usage summary
- - Better checking of movec arguments
- - Added int(value) function to convert floating point constant expression
- to integer (by truncation)
- - Correctly convert a floating -1.0 to 0x800000
- - Wrote a new lexical analyzer and lexical parser generator
- - Many other minor enhancements and fixes.
- - Ported to DOS using DJ Delories' GCC port. (Tools available at
- ftp://omnigate.clarkson.edu/pub/msdos/djgpp)
-
-Known bugs/deficiencies:
-
- - MOVE to a control reg generates bogus code (always use MOVEC,
- MOVEM, and MOVEP)
-
-The example code this time around includes a full six-comb stereo reverb
-(based on Moorer). This one sounds a lot better than the four-comb algorithm.
-Each comb uses a one-pole low-pass filter in the loop. It lacks the
-early-reflection FIR (although Motorola's rvb2.asm has it) but has
-true stereo decorrelation by using a twin allpass stage. My old reverb
-just used inversion to simulate stereo (the whole reverb effect would
-disappear if you mixed the outputs). I've included only actual reverb
-code itself. It lacks the hardware-implementation-specific shell.
-
-
----------------------------------------------------------------------------
-
-OVERVIEW
-
-This program was written as a vehicle to learn the intricacies
-of the DSP56001 instruction set, and to provide a tool for Unix-based
-DSP code development (for those of us without a NeXT machine.)
-
-The intent was to provide compatibility with Motorola assembler's syntax.
-But since the author did not have Motorola's assembler or its documentation,
-it is no doubt far from compatible. Only a few pseudo-ops are implemented--
-probably only partially.
-
-Macros are not supported, except through the use of an external macro
-preprocessor, such as /lib/cpp. To facilitate cpp macro expansion, multiple
-assembler statements on a single input line are delimited with an '@', e.g.:
-
- #define JCHEQ(c,label) move #c,x0 @cmp x0,a @jeq label
-
- #define JCHNE(c,label) move #c,x0 @cmp x0,a @jne label
-
-
-SUPPORTED PSEUDO-OPS
-
-The following is a list of the pseudo-ops that are recognized:
-
- <symbol> = <expression> ;assign a symbol
- <label> EQU <expression> ;ditto
-
- ALIGN <number> ;set location pointer
- ;to next integral
- ;multiple of <number>
-
- ORG <space:> <expression> ;new location pointer
- ORG <space:> <expression>, <space:> <expression>
-
- DC <dc_list> ;declare constants
-
- DS <number> ;reserve <number>
- ;words of space
-
- <label> DSM <number> ;reserve space for
- ;properly aligned
- ;modulo-addressed
- ;buffer of size
- ;<number>, assigning
- ;the aligned starting
- ;address to <label>
-
- PAGE <number>, <number>, <number>, <number> ;ignored
-
- INCLUDE <file> ;file inclusion
-
- END ;end
-
-In addition, a "PSECT" pseudo-op was implemented. It allows program sections
-to be defined and bopped in and out of, each with its own location counter and
-space. The Motorola assembler probably does not have this pseudo-op, but no
-doubt supports the concept in some way.
-
- PSECT <name> <space:><begin_addr>:<end_addr> ;define
-
- PSECT <name> ;switch to psect <name>
-
-
-FUTURE DIRECTION
-
-The assembler probably generates bogus code here and there, and no doubt
-does not handle all of the syntax. I welcome all comments, fixes and
-enhancements.
-
-TO MAKE AND USE
-
-Type "make".
-
-The resulting program, a56, is used as follows:
-
- a56 [-b] [-l] [-o output-file] file [...]
-
-An assembler listing is sent to the standard-output and an ascii-formatted
-object file (a56.out) is produced. The "-b" option adds binary to the listing.
-"-l" causes included files to be listed. "-o" directs the output to the
-specified file rather than the default, a56.out.
-
-A separate program, toomf, converts a56.out into "OMF" format suitable for
-downloading to the 56001 via the sloader.a56 program.
-
- toomf < a56.out > file.omf
-
-AUTHOR
-
-11/28/91
-v1.1 8/6/92
-v1.2 5/2/94
-
-Quinn C. Jensen
-1374 N 40 E
-Orem, UT 84057
-
-home: jensenq@zdomain.com (preferred address for a56 correspondence)
-work: jensenq@novell.com
+++ /dev/null
-
- a56 - a DSP5600X assembler - version 1.3
-
-/*
- * Copyright (C) 1990-1998 Quinn C. Jensen
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. The author makes no representations
- * about the suitability of this software for any purpose. It is
- * provided "as is" without express or implied warranty.
- *
- */
-
-V1.3 CHANGES
-
- - Added intrinsic transcendental functions for constant literal
- expressions (pi, sin, cos, tan atan, asin, acos, exp, ln, log,
- pow)
-
- - Added warnings for control register load/use hazards
-
- - More sophisticated constant expression evaluation including
- implicit float/integer conversion. Results of expressions
- are typed and so formatted in the listing and symbol table.
-
- - Various fixes including stray pointers, etc. (Thanks to
- Dirk Farin farindk@trick.informatik.uni-stuttgart.de)
-
-Known bugs/deficiencies:
-
- - MOVE to a control reg generates bogus code (always use MOVEC,
- MOVEM, and MOVEP)
-
-Wish list
-
- - Add support for new instructions and modes
-
-
----------------------------------------------------------------------------
-
-OVERVIEW
-
-This program was written as a vehicle to learn the intricacies
-of the DSP56001 instruction set, and to provide a tool for Unix-based
-DSP code development (for those of us without a NeXT machine.)
-
-The intent was to provide compatibility with Motorola assembler's syntax.
-But since the author did not have Motorola's assembler or its documentation,
-it is no doubt far from compatible. Only a few pseudo-ops are implemented--
-probably only partially.
-
-Macros are not supported, except through the use of an external macro
-preprocessor, such as /lib/cpp. To facilitate cpp macro expansion, multiple
-assembler statements on a single input line are delimited with an '@', e.g.:
-
- #define JCHEQ(c,label) move #c,x0 @cmp x0,a @jeq label
-
- #define JCHNE(c,label) move #c,x0 @cmp x0,a @jne label
-
-
-SUPPORTED PSEUDO-OPS
-
-The following is a list of the pseudo-ops that are recognized:
-
- <symbol> = <expression> ;assign a symbol
- <label> EQU <expression> ;ditto
-
- ALIGN <number> ;set location pointer
- ;to next integral
- ;multiple of <number>
-
- ORG <space:> <expression> ;new location pointer
- ORG <space:> <expression>, <space:> <expression>
-
- DC <dc_list> ;declare constants
-
- DS <number> ;reserve <number>
- ;words of space
-
- <label> DSM <number> ;reserve space for
- ;properly aligned
- ;modulo-addressed
- ;buffer of size
- ;<number>, assigning
- ;the aligned starting
- ;address to <label>
-
- PAGE <number>, <number>, <number>, <number> ;ignored
-
- INCLUDE <file> ;file inclusion
-
- END ;end
-
-In addition, a "PSECT" pseudo-op was implemented. It allows program sections
-to be defined and bopped in and out of, each with its own location counter and
-space. The Motorola assembler probably does not have this pseudo-op, but no
-doubt supports the concept in some way.
-
- PSECT <name> <space:><begin_addr>:<end_addr> ;define
-
- PSECT <name> ;switch to psect <name>
-
-
-FUTURE DIRECTION
-
-The assembler probably generates bogus code here and there, and no doubt
-does not handle all of the syntax. I welcome all comments, fixes and
-enhancements.
-
-TO MAKE AND USE
-
-Type "make".
-
-The resulting program, a56, is used as follows:
-
- a56 [-b] [-l] [-o output-file] file [...]
-
-An assembler listing is sent to the standard-output and an ascii-formatted
-object file (a56.out) is produced. The "-b" option adds binary to the listing.
-"-l" causes included files to be listed. "-o" directs the output to the
-specified file rather than the default, a56.out.
-
-A separate program, toomf, converts a56.out into "OMF" format suitable for
-downloading to the 56001 via the sloader.a56 program.
-
- toomf < a56.out > file.omf
-
-AUTHOR
-
-11/28/91
-v1.1 8/6/92
-v1.2 5/2/94
-v1.3 3/18/98
-
-Quinn C. Jensen
-1374 N 40 E
-Orem, UT 84057
-
-http://www.zdomain.com/~jensenq/
-
-home: jensenq@zdomain.com (preferred address for a56 correspondence)
-work: jensenq@novell.com
projects / a56.git / commitdiff