Welcome

ASxxxx Release Notes

                ASxxxx/ASlink version 5.50 is
              considered a major release version.


                  M A J O R   C H A N G E S


THE ASSEMBLERS


   The assembler command argument structure has changed.  Previ-
ous versions specified that the first file of a multifile  argu-
ment was the output file.  This has been changed:  

THE OUTPUT FILE HAS THE NAME OF THE FIRST INPUT FILE


   The output file name and/or extension can be changed by using
the -o+ naming  option.   When  the  object  file  extension  is
changed  from  the  default .rel then the linker input file must
explicitly specify the extension.  

   Additional 'Pass 2' scans to resolve mutilevel forward refer-
ences are available using the -n option.  

   The temporary hex radix prefix '$$' has been changed to '$@'.
The decimal point, '.', following decimal  digits  is  now  con-
sidered a temporary decimal radix.  

   The string ascii, ascis, and asciz directives can now include
byte values.  

   The following new assembler directives have been added:  

        .psharea        save and restore area contexts
        .poparea        to/from a 16 element stack

        .trace          trace insert, include, assembler
        .ntrace         files, macros, and repeat macros

        .dl and .long   create 4-byte values
        .blkl           allocate 4-byte blocks
                        (only in specific assemblers)


   The  linker command argument structure has changed.  Previous
versions specified that the first file of a  multifile  argument
was the output file.  This has been changed:  

THE OUTPUT FILE HAS THE NAME OF THE FIRST INPUT FILE


   The  output hex format now uses the generally accepted format
for Intel Hex.  In addition, the default output file name and/or
extension  for  the Intel, Motorola, or Tandy linked code can be
changed with the extended -i+/-s+/-t+ renaming options.  

   The  previous linker command line -b option, set base address
of area, has been changed to the -a option.  

   The  redefined  command  line option -b now sets the base ad-
dress of a bank.  

  Given:
        .area   A       (bank=BankA)
        .bank   BankA   (base=0x100)

        .area   B       (bank=BankB)
        .bank   BankB   (base=0x200)

  Then:
    -a A=0x1000
                sets the start address of area A to 0x1000
                (this overrides any bank calculated address)

    -b BankB=0x4000
                sets the start address of BankB to 0x4000
                (this overrides any defined base address)


   Version  5.5  consolidates  all the updates since version 5.4
which includes the addition of nine assemblers:  

        AS4040          (supports the 4004)
        AS68CF          (ColdFire)
        AS68K           (68000, 68008, 68010, and 68020)
        ASCOP4
        ASCOP8
        ASEZ8
        ASPDP11         (with EIS, FIS, FPP, and CIS)
        ASRS08          (reduced version of the HCS08)
        ASSX

   A much updated ASGB assembler is now more compatible with the
instruction syntax found in the SDCC Gameboy assembler.  

   The  internals  of  the AS6500 assembler have been updated to
use  core  functionality  unavailable  when  the  assembler  was
originally written.  


Summary  of changes/additions to the ASxxxx Assemblers
from version 5.40.

2022_01_17 Version 5.40 Update 5

   UPDATE_02, UPDATE_03, AND UPDATE_04
   MUST BE INSTALLED BEFORE INSTALLING THIS UPDATE.
 
   An update is performed by merging the update directories
   with the asxv5pxx directories.  New files will be added
   and changed files will be replaced.

     1) Addressing mode errors fixed in the
        AS78K0 and AS78K0S assemblers.

     2) Test files for the AS78K0 and AS78K0S
        assemblers are updated.

   You must recompile the AS78K0 and AS78K0S
   assemblers to incorporate the update. 


2021_12_16 Version 5.40 Update 4

   This update brings the assembler and linker to version 5.44
   There is NO version 5.43

   UPDATE_02 MUST BE INSTALLED AND
   UPDATE_03 MUST BE INSTALLED BEFORE INSTALLING THIS UPDATE.
 
   An update is performed by merging the update directories
   with the asxv5pxx directories.  New files will be added
   and changed files will be replaced.

     1) New Assembler: ASRS08 supports the Freescale/NXP
                       RS08 series of microprocessors.

     2) Updates to build files.

     3) Documentation updated.

   You must recompile the ASxxxx Assemblers and Linker
to incorporate the update.xxx  


2021_10_25 Version 5.40 Update 3

   This update brings the assembler and linker to version 5.42

   UPDATE_02 MUST BE INSTALLED BEFORE INSTALLING THIS UPDATE.

     2) Assembler and Linker errors are now reported in a
        more consistant manner.

     2) Assembler and Linker exit codes have been updated.

     3) Corrected the handling of the -h option in aslink.

     4) Fix the ascop8 test file tcop8.asm

     5) Miscellaneous build and cleanup file corrections

   Assembler and Linker files modified:

   assemblers:
     asdata.c, asmain.c, asout.c, assym.c, and asxxxx.h

   aslink:
     lkarea.c, lkbank.c, kkeval.c, lkhead.c, lklex.c, lklibr.c,
     lkmain.c, lkroc.c, lkrloc3.c, lkrloc4.c, lksym.c, and aslink.h

   You must recompile the ASxxxx Assemblers and Linker
to incorporate the update.xxx  


2021_09_01 Version 5.40 Update 2

   This update brings the assembler and linker to version 5.41

   Includes: 2021_05_11 Version 5.40 Update 1

   and the following:

   assemblers:
     asmain    - 'cnt' variable changed to 'a_uint' type.
     asxxxx.h  - Version 5.41

   aslink:
     lklist.c  - linking errors now reported in .rst file
     lkrloc4.c - corrected problem in reported error location
     lkrloc3.c - "
     aslink.h  - Version 5.41

   as8x300:
     s8xmch.c  - line 351 changed to
     		 if ((v2 == 0x07) | (v2 == 0x0F)) {

   New Assemblers:
     as4040    - Intel 4040 and 4004
     ascop4    - National Semiconductor COP400 Series Of Microprocessors
     ascop8    - National Semiconductor COP800 Series Of Microprocessors

   Updates to build/make files, assembler test files, and documentation.


2021_05_11 Version 5.40 Update 1

   AS78K0 and AS78K0S -

   Instructions CMP, XOR, AND, OR, ADD, SUB, ADDC, SUBC, and XCH
   with register to register operations of the form Rn,Rn
   failed to report an error if one of the arguments was not A.

   Instruction MOVW with an addressing mode of SADDRP failed to
   report an ODD address as an error.

     Note: An externally defined SADDRP address which is ODD
           will not be reported as an error by the assembler
           or the linker.

                VERSION 5.40 RELEASE NOTES


        Asxxxx/ASlink version 5.40 is
      considered a major release version.


March 2021 Version 5.40

   (1)  Added a new assembler:
        AS89LP, which supports the AT89LP series of
        advanced 8051 clones with extensions.
        SFR files and a Macro Library are included.

   (2)  A rewrite of the AS6816 assembler to provide
        full 20 bit addressing and fixes to the code
        generation.

   (3)  ASZ80 assembler has been updated to support the
        8085 and 8080 using the Z80 syntax.

   (4)  AS8085 assembler has been updated to support
        the 8080.

   (5)  Assemblers flagging <# and ># as syntax errors
        have been fixed to be equivalent to #< and #>.

   (6)  Added the .incbin directive to allow verbatim
        inclusion of a byte stream.

   (7)  Added extended error reporting to all assemblers
        for most <a>, <o>, and <q> errors.

   (8)  Fixed bug in macro processor related to
        missing or malformed arguments.

   (9)  Update sections of code using strncpy() giving
        errors when compiled with GCC 10.2.0 (no other
        compiler flagged this code with an error).


2019_03_10 Version 5.30 Update 1

   This  update  for  Version  5.30  of the  ASxxxx Cross
Assemblers includes fixes for the following errors:

   (1)  The as78k0 assembler had numerous register
        'H' and 'L' errors which have been corrected.

   (2)  The linker reported the wrong version and has
        been corrected.


January 2019 Version 5.3

   (1)  Added new assemblers:
        as78k0, as8008, as8008s, as8x300, and asz280

   (2)  General assembler updates
        added -i to insert assember lines before input files
        fixed .macro listing options
        fixes related to <q> errors and the -bb option
        fix the escape processing of the '\' character
        .include file location illustrations

   (3)  General linker updates
        fix library path file strings
        rewrite of .lst to .rst translation

   (4)  Assembler specific fixes
        as740
        changed 2-byte code to 1-byte code definition

        as8048
        Corrected bug in "sel" instruction in .8041 mode.

        asf2mc
        Corrected documentation for asf2mc processor types.

        aspic
        Fixed missing machine type variable definition
        Fixed 'tris' instruction

        asst8
        Included add/addw/sub/subw sp,#byte modes.
        Added the int opcode.  Cleaned up st8addr.c
        addressing mode comments and code.


January 2017 Version 5.20

   (1)  Completed the functionality for propagating
        the boundary specifications .odd, .even, and
        .bndry processed during assembly to the linker.

   (2)  Restored the correct functionality of the
        .org directive in areas of REL type.

   (3)  Added Intel Hex legacy start address record
        type 1 as an option.



Summary  of changes/additions to the ASxxxx Assemblers from Ver-
sion 5.11 to Version 4.11.  



2015_06_27 Version 5.10 Update 1

   This update for Version 5.10 of the ASxxxx Cross
Assemblers includes fixes for the following errors:

   (1)  The as6500 assembler incorrectly assembled
        cpx # and cpy # instructions.

   (2)  An error in asmain.c inhibited the listing of
        all .if.. assembly directives.



2014_10_31 Version 5.10

   (1)  Rewrite of listing to relocated listing translation
        code in the assembler and the linker base code.
        The Assemblers now create a .lst to .rst hint file
        with the extension .hlr (when both .lst and .rel
        files are created by the assembler).

   (2)  Add as6100 assembler (Intersil IM6100 / Harris HM6100)

   (3)  Add as78k0s assembler (Renesas/NEC 78K/0S) 



2013_05_12 Version 5.00 Update 6

    This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers rolls up updates 1, 2, 3, 4, and 5 with fixes
for the following:

   (1)  Fix asscmp assembler (pre-increment on fetch).

   (2)  Fix aslink error reporting for PC relative modes.



2012_08_01 Version 5.00 Update 5

Update_05 for the ASxxxx Assembler and Linker Version 5.00
(use 'pkunzip -d u05500.zip' for extraction with MS-DOS)
(use 'unzip -L -a u05500.zip' for extraction with Linux)

       See the note about merging
       this update with the
       asxv5pxx distribution.

   This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers rolls up updates 1, 2, 3, and 4 with the addition of
a new assembler and fixes:

   (1)  A new cross assembler for the Fairchild
        F8 microprocessor (or Mostek 3870).

   (2)  Minor syntactical changes for ANSI C compatability,
        fix type conversion warnings, and update the
        various build, make, and test files.


   Update 4 Items

   (1)  The AS8048 base opcode value for the JMPP
        instruction should be B3 and NOT 83.

   (2)  The AS8051 assembler calculates incorrect
        offsets when using the program counter, ".",
        as a destination in the instructions having
        a PC-Relative addressing mode.  These
        instructions include: jbc, jb, jbn, jc,
        jnc, jz, jnz, cjne, and djnz.


   Update 3 Items

   (1)  A new cross assembler for the Fairchild
        F8 microprocessor (or Mostek 3870).

   (2)  Minor syntactical changes for ANSI C compatability,
        fix type conversion warnings, and update the
        various build, make, and test files.

   (3)  New cross assemblers for STMicroelectronics
        ST6, ST7, and STM8 microprocessors.

   (4)  An ASlink list file update error fix (-u option)
        causing some errors not to be inserted into the
        created .rst file.

   (5)  An additional ASxxxx assembler option (-v) which
        enables checking for out of range signed / unsigned
        values in symbol equates and arithmetic operations.
        This option has some ambiguities as internally the
        assemblers use unsigned arithmetic for calculations.
        (e.g. for a 2-byte machine -32768 and 32768 are both
        represented as 0x8000)


   Update 2 Items

   (1)  When using the assembler directive .end to specify
        the code entry address the assembler fails to set
        the variable .__.END. as a global.  Therefor the
        value of .__.END. is not passed to the linker and
        the start address frame is always zero.

   (2)  The linker will fail to create a start address frame
        when there is no code generated within the area/bank
        referenced by the .__.END. variable.


   Update 1 Items

   (1)  The newest versions of gcc (and perhaps other
        compilers) give warnings about missing arguments
        in the fprintf() function.  This update replaces
        fprintf(arg1, arg2) with fprintf(arg1, "%s", arg2)
        in each affected line of code.

   (2)  The newest versions of gcc (and perhaps other
        compilers) have defined 'getline' as a standard
        function in 'stdio.h'.  This conflicts with the
        function 'getline()' in the ASxxxx package.
        All references to 'getline()' have been changed
        to 'nxtline()'.


   Before merging the asxv5pxx directory and subdirectories with
the V5.00 distribution the following files/directories must be
deleted:

        [asxv5pxx\asf2mc8\f8mch.c
        [asxv5pxx\asf2mc8\f8adr.c
        [asxv5pxx\asf2mc8\f8pst.c
        [asxv5pxx\asf2mc8\f8.h

        [asxv5pxx\asxmak\vc6\asf2mc8]
        [asxv5pxx\asxmak\vs05\asf2mc8]



2011_07_24 Version 5.00 Update 4

   This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers includes fixes for the following errors:

   (1)  The AS8048 base opcode value for the
        JMPP instruction should be B3 and NOT 83.

   (2)  The AS8051 assembler calculates incorrect
        offsets when using the program counter, ".",
        as a destination in the instructions having
        a PC-Relative addressing mode.  These
        instructions include: jbc, jb, jbn, jc,
        jnc, jz, jnz, cjne, and djnz.



2010_10_31 Version 5.00 Update 3

   This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers rolls up updates 1 and 2 with the addition of
three new assemblers and fixes:

   (1)  New cross assemblers for STMicroelectronics
        ST6, ST7, and STM8 microprocessors.

   (2)  An ASlink list file update error fix (-u option)
        causing some errors not to be inserted into the
        created .rst file.

   (3)  An additional ASxxxx assembler option (-v) which
        enables checking for out of range signed / unsigned
        values in symbol equates and arithmetic operations.
        This option has some ambiguities as internally the
        assemblers use unsigned arithmetic for calculations.
        (e.g. for a 2-byte machine -32768 and 32768 are both
        represented as 0x8000)


   Update 2 Items

   (1)  When using the assembler directive .end to specify
        the code entry address the assembler fails to set
        the variable .__.END. as a global.  Therefor the
        value of .__.END. is not passed to the linker and
        the start address frame is always zero.

   (2)  The linker will fail to create a start address frame
        when there is no code generated within the area/bank
        referenced by the .__.END. variable.


   Update 1 Items

   (1)  The newest versions of gcc (and perhaps other
        compilers) give warnings about missing arguments
        in the fprintf() function.  This update replaces
        fprintf(arg1, arg2) with fprintf(arg1, "%s", arg2)
        in each affected line of code.

   (2)  The newest versions of gcc (and perhaps other
        compilers) have defined 'getline' as a standard
        function in 'stdio.h'.  This conflicts with the
        function 'getline()' in the ASxxxx package.
        All references to 'getline()' have been changed
        to 'nxtline()'.



2010_04_01 Version 5.00 Update 2

   This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers includes fixes for the following errors:

   (1)  When using the assembler directive .end to specify
        the code entry address the assembler fails to set
        the variable .__.END. as a global.  Therefor the
        value of .__.END. is not passed to the linker and
        the start address frame is always zero.

   (2)  The linker will fail to create a start address frame
        when there is no code generated within the area/bank
        referenced by the .__.END. variable.



2010_03_03 Version 5.00 Update 1

   This  update  for  Version  5.00  of the  ASxxxx Cross
Assemblers includes fixes for the following errors:

   (1)  The newest versions of gcc (and perhaps other
        compilers) give warnings about missing arguments
        in the fprintf() function.  This update replaces
        fprintf(arg1, arg2) with fprintf(arg1, "%s", arg2)
        in each affected line of code.


   (2)  The newest versions of gcc (and perhaps other
        compilers) have defined 'getline' as a standard
        function in 'stdio.h'.  This conflicts with the
        function 'getline()' in the ASxxxx package.
        All references to 'getline()' have been changed
        to 'nxtline()'.



2009_04_01 (Version 5.00)


   Added  a general purpose macro processor to the ASxxxx assem-
blers.  

   Added  true (t), false (f), and true or false (tf) condition-
als to the  .if / .else / .endif  construct.   The  conditionals
.ift,  .iff,  and .iftf allow replacement of the .else directive
making the .if / .endif construct more readable.  

e.g.    .ift    if condition is true


   An  alternate  .if  construction has been added to the ASxxxx
assemblers:  

e.g.    .if    eq,...   if argument == 0


   The  immediate  conditional statements have been added to the
ASxxxx  assemblers.   These   conditionals   can   replace   the
.if / ... / .endif construct for a single assembler source line: 

e.g.    .iifeq  arg     label:  .word   0x1234


   The alternate immediate conditional statements have also been
added to the ASxxxx assemblers:  

e.g.    .iif    eq,arg  label:  .word   0x1234


   The  listing  options  for the ASxxxx assemblers has been up-
dated to enable/disable any of the following parameters from be-
ing output to a generated listing file:  

    err         error codes
    loc         code location
    bin         assembler binary code
    eqt         symbolic equates / if evaluations
    cyc         machine cycles
    lin         assembler source line number
    src         assembler source code
    pag         paging control
    lst         listing of .list / .nlist
    md          macro definition
    me          macro expansion
    meb         macro expansion binary code

    !           sets the listing mode to
                !(.list) or !(.nlist) before
                applying the sublist options

e.g.    .nlist  (lst,pag)       ; disable .list/.nlist listing
                                ; and pagination


   The  NOT parameter, !, is used to set the listing mode to the
opposite sense of the .list or .nlist directive.  For example:  

    .nlist (!)  is equivalent to .list and
    .list  (!)  is equivalent to .nlist

To enable listing and simultaneously disable the cycle count use
the directive:  

    .nlist  (!,cyc)

or  if  you  wish  to suppress the listing of the .list / .nlist
directives:  

    .nlist              ; disables all listing
    .nlist  (!,lst)     ; enables  all listing except
                        : .list (...) and .nlist


   Normally  the  .list  and .nlist directives are not evaluated
when encountered within a FALSE conditional block.  This default
behavior  can  be  modified by specifying a non zero argument in
the .list or .nlist directive:  

    .nlist   1,(!,lst)  ; enables listing even within
                        ; a FALSE conditional block



   The .bndry assembler directive has been added to ASxxxx.  The
.bndry directive changes the  current  location  address  to  be
evenly divisible by a specified integer value.  

e.g.    .org    0
        .bndry  4
        ; . == 0

        .org    1
        .bndry  4
        ; . == 4



2009_02
   Added the Cypress PSoc (M8C) ASM8C assembler
   to ASxxxx.


2008_09
   Added the 8048 (8021, 8022, and 8041) AS8048
   assembler to Asxxxx.


2008_02
   Added the SC/MP ASSCMP assembler to ASxxxx.


2008_02_03 (Version 4.11 Update 4)

   An update to the AS2650 assembler to
   fix the following errors:

   1)  The indexed addressing mode generates invalid
       code by using the first argument register as
       the index register: (addr = 0x1234)

           loda    r0,[addr,r1]          0C F2 34
                   this should give      0D F2 34

   2)  The index addressing mode did not generate
       an addressing error when the first argument
       register was not r0:

           stra    r1,[addr,r2]  should give an <a>
                   error, the source must be r0


           loda    r2,[addr,r3]  should give an <a>
                   error, the destination must be r0

   3)  The S2650 auto increment and decrement indexing 
       modes always perform the register update before
       the register is used. i.e. +Rn or -Rn.  The
       assembler now accepts +Rn or Rn+ as meaning
       pre-increment and -Rn or Rn- as meaning
       pre-decrement.


   The AS2650 assembler tstscn files have been updated
   for testing the assemblers.



2007_10_21 (Version 4.11 Fix)

   In the AS6816 assembler the instruction ANDP gives
   wrong object code. Changed from 37 2A  to  37 3A.


2007_04_01 (Version 4.11 Update 3)

   An update to the ASPIC assembler and
   associated fix to ASLINK:

   1)  Change the pic addressing to lo/hi from hi/lo
       byte ordering.

   2)  The update fixes an error in the pic17 series
       LCALL instruction.

   3)  A rewrite of the pic18 series assembler to change
       the PC addressing from 1 per 16-bit word to 1 per
       8-bit byte and add the extended instruction set.

   4)  Modify the Linker Merge Mode processing to take into
       account the discarded low order bits for PC Relative
       Addressing.

   5)  New  tstscn files for testing the assemblers.



2006_11_01 (Version 4.11 Optional Update 2)

   1)  OS9  definition files and an  OS9 assembler module
       which creates the OS9 header, code and data areas,
       and the module CRC block:

            os9_mod.def       OS9 Module Definitions
            os9_sys.def       OS9 Sytem  Definitions
            os9_mod.asm       OS9 Module Begin / End Code

   2)  a program, s19os9, to post-process  assembled  OS9
       modules in  S19  format into  binary  OS9  modules
       with the appropriate  header  checksum  and module
       CRC values calculated.

   3)  new  make  and  project files which may be used to
       compile the s19os9 program.


2006_11_01 (Version 4.11 Optional Update 01)

   The .list  and  .nlist  directives  are  now  modified
   by .if / .else / .endif  processing  so  that they are
   active only in a TRUE clause.

   The  .page  and  .include  directives are now modified
   by the .list and .nlist  directives so that pagination
   occurs only when listing is active.

   The new  default functionality for the  .list,  .nlist
   and .page directives may  be  modified by including an
   optional argument  in the  directive as shown here for
   the the .list directive:

      .list    arg

   a non-zero argument invokes the directive irrespective
   of the .if / .else / .endif status.



2006_07_26 (Version 4.11 Patch 01)

   The  assembly  of  a  direct  page  instruction with a
   numeric  constant  causes a program  crash when a .rel
   file is created. e.g.:

        andb    *0x02


   The  use  of  a  symbolic  constant  or  symbol plus a
   a constant compiles normally.

        val = 0x02

        andb    *val
        andb    *extern+0x01


   The assemblers effected are:

        as6809
        as6812
        ash8
        aspic


   Summary  of  changes/additions  to the ASxxxx Assemblers from
Version 4.10 to Version 4.11.  

     1.  Incorporated  the patches contained in p01410.zip which
         corrected a coding error that affected BANKS containing
         multiple ABS areas or mixed AREA types.  

     2.  Incorporated  the patches contained in p02410.zip which
         corrected improper use of  R_USGN  in  most  addressing
         modes  in AS6500.  This caused unexpected <a> errors in
         V4.xx because of the ASxxxx core change to  32-bit  in-
         tegers and arithmetic.  

     3.  Incorporated  the patches contained in p03410.zip which
         corrected errors in the  .local  and  .globl  assembler
         directive  processing  routine that introduced unwanted
         side effects for variable and symbol definition  files.
         These  effects included improper definitions and incor-
         rect error warnings.  

     4.  The  following  new subdirectories and their files have
         been added to the asxtst directory:  

          *  areabank     Area and Bank Processing Test 
             This  directory  contains  several  test  programs:
             ts.asm (single file - multiple areas), tm1.asm  and
             tm2.asm  (multiple  file  -  multiple  areas),  and
             tbm.asm, tbm1.asm, and tbm2.asm ( multiple  file  -
             multiple  areas  within  a  bank) and several other
             files which verify the  correct  operation  of  the
             linker  when used with a single linked file, multi-
             ple linked files having no  banking,  and  multiple
             linked  files  with banking.  These reference files
             show in detail how the .area and  .bank  directives
             work together.  

          *  equtst       Equate Processing Test 
             This  directory  contains a test file for verifying
             the operation of the .globl, .local, .equ, .gblequ,
             and  .lclequ  directives  and  the  =,  ==,  and =:
             equalities.  

          *  inctst       Nested Include File Test 

          *  itst         Include File Error Reporting Test 


     5.  Incorporated  the updates contained in u01410.zip which
         added 10 undocumented 8085 instructions to  the  AS8085
         assembler.  


   Summary  of  changes/additions  to the ASxxxx Assemblers from
Version 4.00 to Version 4.10.  

     1.  Added new assemblers for the Zilog EZ80, Zilog Z8, Sig-
         netics 2650, and Fujitsu F2MC8(L,FX) processors.  

     2.  Added the processor cycle count option (-c) to all pro-
         cessors.  

     3.  Several   of  the  assemblers  (ASZ80,  ASRAB,  AS6805,
         AS6808, AS6812, ASF2MC8, ...) now  support  subsets  or
         supersets  of  their basic opcodes by the use of assem-
         bler specific directives.  

     4.  Added .ifeq, .ifne, .iflt, .ifgt, .ifle, and .ifge con-
         ditional assembly directives.  

     5.  Added  support  for the Tandy Color Computer Disc Basic
         binary file format to ASLINK.  

     6.  Problem:  
         When  an area size is equal to the 'address space size'
         the size parameter is reported as 0.  (A normal  condi-
         tion  caused  by  address rollover to 0.) Aslink inter-
         preted this as a 0 size.  

         Fix:  
         A  new area 'Output Code Flag' bit was defined to indi-
         cate when data is  defined  in  an  area.   ASxxxx  and
         Aslink  have  been updated to set and process this area
         flag bit.  

     7.  Problem:  
         The  use  of  the .end assembler directive in an Asxxxx
         assembler would cause Aslink  to  output  the  optional
         start address in all output files.  

         Fix:  
         Updated  Aslink  to  output  the optional start address
         only in the output file associated with  the  area/bank
         containing the .end directive.  

     8.  Problem:  
         Aslink  creates  output  files for banks with no output
         data.  

         Fix:  
         Aslink  now  deletes  any created output file for banks
         with no data.  

     9.  Incorporated  the  patches  contained in p01400.zip for
         files t1802.asm and 1802pst.c to correct for  an  error
         in  the  opcodes  generated  for  the  BM,  BL, and BNF
         mnemonics.  

    10.  Incorporated  the  patches  contained in p02400.zip for
         file ds8adr.c to correct for an  error  in  the  direct
         page addressing mode of AS8xCxxx.  

    11.  Incorporated  the  patches  contained in p03400.zip for
         file rabmch.c to correct for an error in the processing
         of the "ret cc" instruction.  

    12.  Made many corrections to internal code comments.  

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Last Updated: September 2023