This document describes the changes which have been made to my vxWorks/EPICS IndustryPack driver as it has evolved since first release. The earliest version appears at the bottom, with more recent releases above it.

Version 2.7

Changed:

• Modified the drvIpac/Makefile to build all carrier drivers on all architectures so one set of registrar() entries can be used on all vxWorks architectures, although some carrier drivers will only work on certain CPUs.

Version 2.6

Changed:

• Converted the carrier drivers to register their own ipacAddXXX routines in place of using ipacAddCarrier, so this can be done from the iocsh on EPICS Base R3.14.3 and higher. Also added the necessary registrar routines to each carrier driver, and generate a proper library file libIpac.a for build purposes.

Version 2.5

Changed:

• This version is intended for builds using EPICS Base R3.14.x, and has been tested against Base R3.14.2. There were a few minor changes to the code, but these were just to get it to build properly. The only supported operating system is still vxWorks - the EPICS OSI layer does not currently provide API equivalents for vxMemProbe() or intConnect(). There is a reasonable chance of porting drvIpac and some of the carrier drivers to run on RTEMS once the OSI layer is sufficiently functional, but other operating systems are not likely to be easy targets.

Version 2.4

Added:

• Documentation for the ipac_statActive and ipac_statUnused irqCommands which were new in V2.2, but that I forgot to add to drvIpac.html.

Version 2.3

Added:

• Recognition of high-speed (32 MHz) IP modules in ipmCheck; these have an ID prom that starts 'IPAH' rather than the usual 'IPAC'. Carrier drivers that can change a slot's clock speed in software must scan the ID proms for their slots at 8MHz and then switch any that can run at 32 MHz.
  NB: I don't actually know of any carriers that can do this; the IPIC chip on the MVME162/172 has an IP Clock Register, but this only controls cycle synchronization logic - the IP clock rate is set using jumpers on the CPU board (and appears to affect all the IP slots together).
• Added warning message to VIPC610 and VIPC616 drivers whenever a Level 7 interrupt is enabled, as the connected ISR should not call any vxWorks routines. Usually it is a mistake to use this, but unfortunately the boards are delivered with slot D IRQ0 wired for this level. Also put an explanatory note in the carrier board documentation.
• Added a driver for the VIPC616-01 option, which isn't subject the the problems in the previous bullet point.
• Brought the index.html file for the ipac module home page into the software distribution and reorganized the links so they work even when viewed from the a local <ipac>/html install directory.
• New 'R' configuration parameter to the ipMv162 carrier driver which gives all slots a hardware reset pulse on startup. If used, this must be the first character of the string.

Changed:

• Removed CANbus-specific comments from the IPAC Release Notes.

Version 2.2

Added:

• Two new commands ipac_statActive and ipac_statUnused for irqCommand which a module or carrier driver can use to enable and disable LEDs showing the activity status of a particular slot. Only the VIPC664 carrier driver (not provided with IPAC) supports these at present, other drivers will return the usual S_IPAC_notImplemented response.

Changed:

• Copyright and license terms. IPAC (and drvTip810) is now licensed under the GNU Lesser General Public License (LGPL), which enables it to be used in commercial software, although any binary distribution containing it or a derivative of it must make the source code available under the LGPL terms.
• Various other small modifications to fix compiler warnings and such under EPICS Release 3.13.2.

Version 2.1

Added:

• Jeff Hill's driver for the GreenSpring ATC40 ISAbus carrier board, including the changes to the main drvIpac software and the other carrier drivers which are necessary to support little-endian architectures. These were:
  • Make all accesses to the IP module registers & ID-Prom use short (16-bit) read/writes, so the endian problem disappears. Adjust various internal routines to allow for this.
  • Provide a new function pointer (optional, may be NULL) in the carrier table which is called by ipmIntConnect. Module drivers should use ipmIntConnect instead of vxWorks' intConnect routine to attach their interrupt routine. This makes it possible to use identical module driver code on both VME and ISA bus, although the module driver may have to be modified as discussed above to resolve the endian issue.
• Some printf()s in ipacAddCarrier so failures can be seen without having to look at the return value.
• SRCS.c entries to Makefile.Vx so gnumake depends works.

Bug fixed:

• Finally tested the MVME162 carrier driver myself - this also works on the MVME172. Changed the checking of m= addresses to use unsigned arithmetic.

Version 2.0

The software is now restructured as an EPICS R3.13.1 <supporttop> application. CANbus (drvTip810) and other drivers can be built in separate application directories inside this <supporttop>.

Added:

• Peregrine McGehee's GreenSpring Octal Serial Driver from CFHT.

Bug fixed:

• Gcc compilation warnings attended to.

Version 1.1c

Final release from the RGO. CVS repository transferred to APS.

No changes to drvIpac

Version 1.1b

Added:

• These release notes.

Version 1.1a

Bugs fixed:

• VIPC616 carrier driver address parameter handling fixed, changes courtesy of Christoper Estes.

Version 1.1

Added:

• IPAC Prom structure declared volatile to prevent gcc optimiser from generating long word accesses to it. Only affected some carrier boards.
• Separate support for both the GreenSpring VIPC610 and VIPC610-01 carrier boards, which have different interrupt levels for the different slot interrupts. From now on the correct carrier table vipc610 or vipc610_01 should be used.
• Support for the the GreenSpring VIPC616 carrier board, table name vipc616.
• HTML Documentation distributed in the release.

Version 1.0

First full release.