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- A86 macro assembler, V4.02 September 25, 1995
- Copyright 1986--1995 Eric Isaacson.
- All rights reserved.
-
- Eric Isaacson Software Visa/MC/Amex accepted
- 416 E. University Ave. 1-812-339-1811 voice
- Bloomington, IN 47401-4739 1-812-335-1611 fax
- 71333.3154@compuserve.com
-
- See the text file A01.DOC for permissions/restrictions.
-
- This package is a complete assembly-language compiler for the
- IBM-PC, together with a complete manual. Please upload it to
- bulletin boards, and give it to user groups, computer
- departments in schools, and anyone else you think might be
- interested in writing assembly-language programs for Intel 86-
- family microprocessors.
-
- You need to read the manual to use this program -- it's
- just too complex to be self-explanatory. The file A02.DOC
- takes you through a trial demonstration.
-
-
- What's New
-
- V4.02 and V4.01 are bug-fix releases.
-
- V4.00 is the "official release" of A86 with major new features,
- although I made an "unofficial release" (versions V3.7x) with
- these features earlier.
-
- Let's cover the INCOMPATIBILITIES first, so you will know
- where to tweak your existing code:
-
- * Error messages in A86 now have a slightly different format (on
- their own line with a pointer to the error location). If you
- have any source code lying around with old-format error
- messages, get rid of the messages before reassembling with
- this new version -- this version cannot handle them.
-
- * I have changed the L switch to the G (code Generation) switch
- to prepare for L becoming a Listing-control switch. I have
- also changed the X switch to +G16, to prepare for X becoming
- the XRF control switch. If you have any batch files or A86
- environment-flag settings with +L or +X in them, change them
- to +G for this new version.
-
- * The DATA SEGMENT now has a default ORG value of END; that is,
- it starts at the end of your program, unless you have an ORG
- otherwise. V3.20--V3.22 of A86 outlawed ORGless DATA segments,
- in anticipation of this feature. Versions before that had a
- default ORG of 0 -- if you have source code written for a
- pre-V3.20 version of A86, make sure you put ORG 0 at the start
- of the first DATA SEGMENT if it was ORG-less.
-
- Other new features include an INCLUDE directive (Chapter 9), a
- listing facility (Chapters 3 and 13), END operand value (Chapter
- 9), pulling XREF and EXMAC functions into the assembler (Chapter
- 13), operand to EVEN (Chapter 9), the removal of the limit on
- the length of a source file, the removal of most restrictions on
- forward-references within expressions, the ability to ORG in the
- DATA segment and structures to a forward-reference value, the
- REF and DEF operators (Chapter 9), the K numeric base (Chapter
- 10), numeric operands to STOSx and MOVSx (Chapter 5), and macros
- in an A86LIB library (Chapter 13).
-
- I also have an A386 assembler and D386 debugger, available only
- if you register BOTH A86 and D86. They cover all instructions
- up through the Pentium, although at this writing I do not yet
- have segments of type USE32 implemented. Chapter 6 of the A86
- manual describes all the new A386 instructions and instruction
- forms.
-
-
- How to Get Everything
-
- If you have downloaded the A86Vxxx.ZIP file from a BBS, you need
- only make a subdirectory on your hard drive, make that the
- current subdirectory, then run the program PKUNZIP or PCUNZIP
- followed by the name of the ZIP file. The program will "unzip"
- (decompress) all the files of the package into your subdirectory.
-
- There is an associated debugger, in a file D86Vxxx.ZIP, that you
- may wish to look for in the same sources from which you received
- this A86 package.
-
-
-