X-Git-Url: https://jxself.org/git/?p=a56.git;a=blobdiff_plain;f=README-1.3;fp=README-1.3;h=0000000000000000000000000000000000000000;hp=6492dae4c38be50ac416809b1746e728411b7c20;hb=c6db6f4c5cb82f5e09472163bf11be0c165965ee;hpb=6539332686a03e95d8032567093e2297ba6748a7

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-
-  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