IBM Assembly Language Processor
The Assembly Language Processor (ALP) is a macro assembler from IBM that offers a native mode and a MASM 5.1 compatible mode, and indeed intended to replace the Microsoft Assembler product for use on OS/2 systems especially for driver development. ALP was available in versions for OS/2 and AIX, versions with dates later than 1995 also support a subset of the MASM 6.x language.
ALP generates standard OMF files that can be linked to produce DOS or OS/2 executables. Symbolic debugging information is compatible with IBM's source code debuggers.
- May 1995: Version 1.03.273
- 1996: Version 4.00.000 - IBM Developer Connection Vol. 11
- Version 4.00.003
- Version 4.00.004
- Sep 1997: Version 4.00.005 - IBM Developer's Toolkit for OS/2 Warp Version 4
- Latest Version: 4.00.008
- OS/2 Warp
- Link386 or compatible linker
- Assembly Language Processor Reference Guide - May 1995
- ALP Programming Guide and Reference - Oct 1997
- Assembly Language Processor (ALP) Assembler Reference
- Gruber; Turner: Developers Enjoy the "ALP"s (Assembly Language Processor)
- The Hobbes DEV/ASM directory contains most of the ALP tools and patches.
- ALP_MXG - By default the native mode on ALP is 32 bits only while the otherwise less capable MASM 5.1 emulation mode allows mixed 16/32 bit code. This patch allows you to use mixed 16/32 bit code in native ALP mode.
- masm2alp - Utility that converts MASM projects to ALP projects.
License and availability
- Closed source software - Available as a free download from IBM.
- Came packaged with other IBM Compiler products.
- Comes with the IBM Device Driver Development Kit [DDK]
- Was available to Passport Advantage subscribers before the program was discontinued in 2005.
- IBM (Steve Turner)