199 lines
7.4 KiB
Plaintext
199 lines
7.4 KiB
Plaintext
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***********************************************************************
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***********************************************************************
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*********************** ***********************
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*********************** PL/I-86 Release 1.0 ***********************
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*********************** For use with ***********************
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********* The IBM Personal Computer Disk Operating System ***********
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************************** Version 1.1 ******************************
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***********************************************************************
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***********************************************************************
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*********** ************
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******** Release Notes *********
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******* ********
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***********************************************************************
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***********************************************************************
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***********************************************************************
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******* *******
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******* Copyright (c) 1983 by Digital Research *******
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******* *******
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******* CP/M-86 is a trademark of Digital Research. *******
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******* PL/I-86 is a trademark of Digital Research. *******
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******* IBM is a tradename of International Business Machines. *******
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***********************************************************************
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***********************************************************************
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***********************************************************************
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***********************************************************************
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***** *****
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***** These release notes provide the most current information *****
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***** regarding both the software and the documentation set for *****
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***** for the Digital Research product, PL/I-86. *****
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***** *****
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***********************************************************************
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***********************************************************************
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***********************************************************************
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1
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***********************************************************************
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************************* SOFTWARE NOTES ****************************
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***********************************************************************
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DOS
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IBM Personal Computer DOS V1.1 does not interpret ANSI standard escape
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sequences. Consequently, programs that attempt to handle displays via
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escape sequences for cursor control will not run properly.
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PL/I-86 R1.0
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The following features are described in the PL/I Language Reference
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Manual, but are NOT implemented in PL/I-86 R1.0 running under DOS:
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o Double-precision FLOAT BINARY data
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o File password protection in the ENVIRONMENT option
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o File and record locking using the built-in LOCK and UNLOCK
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functions.
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o The error messages emitted by the compiler during Pass 1 and Pass
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2 are the same error messages used in PL/I-86 R1.0 running under
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CP/M-86. Appendix E.2 states that there are new error messages in
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Pass 1 and Pass 2. The new error messages will be included in
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Release 1.1.
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RASM-86 R1.0
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The following features are described in the Programmer's Utilities
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Guide, but are NOT implemented in RASM-86 R1.0 running under DOS:
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o Release 1.0 does not implement the Stack, Local, and Absolute
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combine types (see Section 3.2.3).
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o Release 1.0 does not implement user-defined class names (Section
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3.2.4).
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LINK-86 R1.0
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The following features are described in the Programmer's Utilities
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Guide, but are NOT implemented in LINK-86 R1.0 running under DOS:
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o Release 1.0 does not implement the Class, Group, Origin, and
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Segment command-line options (Sections 7.7.1 and 7.7.3).
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o The general-purpose overlay manager OVLMGR.OBJ is not included in
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R1.0. The PL/I-86 Run-time Subroutine Library (PLILIB.L86)
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includes an overlay manager.
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Note: The features that are not included in R1.0 have no impact on the
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PL/I-86 programmer. They will be implemented in future versions.
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2
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***********************************************************************
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*************************** SOFTWARE BUGS ***************************
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***********************************************************************
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The following are known software bugs in PL/I-86 R1.0 running under
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DOS:
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o An array reference such as
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A(constant-expression) = constant;
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gives a compilation error. You can program around this using the
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following mechanism:
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i = constant-expression;
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A(i) = constant;
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o A CALL statement cannot contain a null argument list. For
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example,
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CALL A();
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You can program around this by always using
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CALL A;
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o There is an incorrect string assignment if the right-hand string
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overlaps the left-hand string. The example in the Language
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Reference Manual, page 6-7 is correct; the compiler is not.
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o The RANK built-in function doesn't accept SUBSTR as an argument.
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For example, RANK(SUBSTR(C,1,1)) causes a compilation error.
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o A statement in column 1 following a simple DO statement causes a
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compilation error.
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o At run-time, end-of-file is not noticed if the column descriptor
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in the format specifies a location past the actual end of the
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file.
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o Static, initialized data with odd-numbered byte boundaries can
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sometimes overwrite storage reserved for the File Parameter Block,
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thereby causing OPEN errors. For example,
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declare x fixed binary(7) static initial(0);
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You can program around this by declaring the data with the STATIC
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and EXTERNAL attributes, or by using a declaration that forces
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storage on a word (double-byte) boundary, for example FIXED
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BINARY(15). Omitting the INITIAL attribute also solves the
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problem.
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Digital Research is in the process of fixing these software bugs, and
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will either furnish field patches through Technical Support, or issue a
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new version.
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3
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