dos_compilers/Digital Research CB-86 v2/READ1.ME
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* R E L E A S E N O T E S *
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ASSEMBLER PLUS TOOLS
VERSION 1.0
FOR THE IBM PERSONAL COMPUTER DISK OPERATING SYSTEM
Copyright (c) 1983 by Digital Research, Inc.
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Assembler Plus Tools Release Notes
These release notes pertain to both the software and
the documentation set for the Digital Research
product:
Assembler Plus Tools
For the IBM Personal Computer
Disk Operating System
They provide the most current information regarding:
o changes and corrections to the software that
have been identified since the product was
released.
o errors or omissions in the documentation set
that could not be corrected because of the lead
time needed for production and printing.
Note: These release notes have been formatted so you
can print them on your own printer, cut them to size
(6 1/2 x 8 1/2), and place them in your manuals.
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Assembler Plus Tools Release Notes
LINK-86 Notes
A new command line option has been added to the
linker. The $MY option directs LINK-86 to send the
.MAP file to your line printer.
A new optional parameter has been added to the MAP
option. The NOCOMMON parameter directs LINK-86 to
suppress the listing of common segment names in the
MAP file.
LINK-86 now displays the filename and module name
indicating the location of an undefined symbol.
The Assembler Plus Tools package does not include an
overlay manager. The overlay manager is part of the
run-time library that is packaged with your language
software.
LINK-86 can now report three additional error
messages:
CLASS NOT FOUND - The class name specified in
the command line does not exist in any of the
files being linked.
GROUP NOT FOUND - The group name specified in
the command line does not exist in any of the
files being linked.
SEGMENT NOT FOUND - The segment name specified
in the command line does not exist in any of the
files being linked.
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Assembler Plus Tools Release Notes
RASM-86 NOTES
A new command line option has been added to the RASM-
86 assembler. The $NC option directs RASM-86 not to
convert letters in symbol names to uppercase. This
feature supports users of the C language.
RASM-86 Version 1.3 now supports 8087 opcodes.
However, RASM-86 does not allow types other than
byte, word, and double-word. Therefore, in order to
support the 8087 instructions, the form of the RASM-
86 instruction is slightly different from the Intel
convention.
All memory reference instructions have two characters
appended to the end of the opcode name. The two
characters represent the number of bits referenced by
the instruction. For example,
FADD64 byte ptr my_var
This instruction assumes that my_var contains 64 bits
(4 bytes). This convention applies to all 8087
instructions that reference user memory, except those
that always reference the same number of bits (i.e.
FSTCW).
Also, in the Intel convention, any instruction that
is followed by a P causes the stack to be popped. In
RASM-86, the P follows the number of bits. For
example,
FSUB80P byte ptr my_var; sub and pop temp real
We recommend that you carefully study all the Intel
documentation about the 8087 coprocessor and its
opcodes before using them in RASM-86.
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Assembler Plus Tools Release Notes
SID-86 Notes
Currently, SID-86 does not fully support symbol files
for programs configured according to the LARGE,
COMPACT, or MEDIUM memory models.
To reference symbols in a LARGE or MEDIUM model
program, you must refer to the .MAP file generated
for the program by LINK-86. The .MAP file provides
you with relative segment locations.
To reference a segment during debugging with SID-86,
you must add the relative segment location provided
by the .MAP file to the absolute segment location
which is displayed by SID-86 when the file is loaded.
END OF READ.ME FILE
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