ACC Release Notes for the B.03.01 Release

Advanced Communications Controller Release Notes for the B.03.01 Release

Major Enhancements and New Features

32/64-bit Support

• This release comes with 32-bit and 64-bit versions of ACC

software. Depending on the target system OS, the compatible

version will be selected automatically during ACC software

installation.

• The 32-bit ACC software is compatible across PA-RISC 1.1 and

2.0 architecture, and is supported on both 32-bit and 64-bit

HP-UX 11.00. The 64-bit software can only run on PA-RISC 2.0

64-bit (the wide mode), running 64-bit HP-UX 11.00.

• Both 32-bit/64-bit API libraries are supplied in the ACC

Protocols for Application Developers software. This allows

cross-platform development for 32 and 64-bit applications. The

32-bit API library is installed in the default directory /usr/lib,

and the 64-bit API library is installed in /usr/lib/pa20_64

which is the default directory searched by ld during 64-bit

linking.

• All of the user-accessible data structures are re-designed to be

32/64-bit neutral. For example, they give same size and similar

layout in both 32/64-bit compilation. This makes a 32-bit

application compatible with both 32/64-bit ACC, and it also

minimizes the effort to develop a 64-bit clean application. That

is, a single source code can be used to generate 32-bit and

64-bit executables when compiled in 32 and 64-bit modes.

• ACC applications developed for previous releases (B.02.xx)

must be recompiled and relinked in 32-bit mode, using the

revised include ﬁles and libraries. This release is carefully

designed to be source code compatible with well-behaved

applications of previous releases (using sizeof() for data

structure sizes and no assumption on the position of a ﬁeld

with data structure). Refer to the next section for more

information related to ACC development.