Posts Tagged 'OS/2'

USB Driver Stack: improvements for the USB Audio driver

The legacy usb driver stack version 10.x branch is constantly being update by Lars Erdmann and Wim Brul. In 2017 the USB Audio driver got a lot of fixes and new functionality. One part of the patches is for the stream handling that fixes problems after a stream resume in case another stream was played. Starting with driver version 10.217 the usbaudio driver comes with an additional wps ioproc module called “usbwave” which does the on fly sample rate conversion, this is required because the usb audio hardware often supports a fixed sample rate only.

The ioproc need to be installed separately from the USB Audio driver:

usbaudio wave ioproc installation

usbaudio wave ioproc installation

In case it is correctly installed it should be listed in the WPS Multimedia Codes page:

usbaudio wave ioproc mmcodecs

usbaudio wave ioproc mmcodecs

Audio applications which are using the pmmm interface will work in this setup but audio application/mixer that may talk directly to the audio driver, e.g. uniaud or use the ioclt90 interface will not work.


Team OS/4: OS/4 kernel support for AMD Ryzen CPU

The OS/4 Kernel Team recently updated the OS/4 kernel to support the AMD Ryzen CPU, which has the famous VME bug found by Michal from the os2museum. AMD fixed the issue with a microcode update found in the AGESA BIOS blob.


  • updated oemhlp kernel driver which contains a patch for the AMD Ryzen VME bug
  • kernel support for the AVX CPU instructions found in recent AMD and Intel CPUs
  • new pmdd.sys/pmddk.sys which talks to the new KEE interface but it is also compatible with the IBM Aurora CP SMP Kernel

Firefox 45 ESR Beta 8 for OS/2 released

The time of waiting is over because the first public Firefox 45 ESR for OS/2 is now available as a zip package. About the issues with the rpm package check the previous post.

Firefox 45.5.0 ESR Beta 8 for OS/2

Firefox 45.5.0 ESR Beta 8 for OS/2

Changes in this release

  • link against external LIBJPEG, LIBPNG, ZLIB, BZIP2 and HUNSPELL DLLs
  • use kLIBC 0.6.6 DLL directly in JS code
  • Link against LIBCx DLL for automatic EXCEPTQ trap report creation


  • web page scrolling, entering text in input fields and tab change are delayed/slow

Other stuff
This release not only needs more external libs/dlls (for image format and such)
but also core dlls that were part of the Firefox package – security lib (NSS). You will easily see this change because the Firefox root dir is now nearly empty. If this is a wise move especially when there are now regressions like Firefox isn’t working correctly because of these external libs.
In 2016 there was a change to support again native printers (GPI)(#155, #75, #134) and not only CUPS based printer.

Firefox 45 ESR for OS/2 (zip) size 53MB

Firefox needs tons of external libs now, we try to list as many of them here or you can try to use the yum/rpm way.

Firefox 45 ESR Alpha: first steps done

In April the OS/2 port made some progress to get the first Alpha build of Firefox 45 ESR running:

Firefox ESR 45.5.0 for OS/2 Alpha

Firefox ESR 45.5.0 for OS/2 Alpha

Some notes about the latest patches and comments:

  • the off-main-thread-composition (OMTC) code path currently does not work and the feature is disabled for now
  • adapt the new fontlist code, changes over the fontlist pango code in 38ESR
  • fix problems because of symlinks in the profile dir
  • disable plugin-container.exe to fix the 100% CPU load after it get’s called
  • future GL support on OS/2 for Firefox based on the ancient OS/2 port of Mesa (software based rendering only)
  • future WebTRC support, needs better USB support (drivers) and the port of the webtrc code in Firefox

The have been some updates to external base dll required for Firefox to run. There is a new issue with the rpm build because of python issues. There’s also a plan to create a new launcher that will call the firefox.exe from a fixed path in the /usr directory tree, fortunately there will be a non rpm release (zip release) that will ship with a standard firefox.exe that can load its dlls from the Firefox root dir and the firefox dir itself can be on any drive and in any dir you like. There is also a plan to make the zip release available before the rpm install issue get’s fixed.

Mozilla’s Firefox Future

Mozilla Research is actively working on the servo browser engine for its next gen browser “project quantum”. Servo is written in Mozilla’s new system language Rust that has some advantages like memory handling, code safety and better performance. Servos aim is to take advantage of the current hardware, that is both the CPU and the graphics for again better performance. Mozilla is now adding parts of the servo project written in Rust to the current Gecko code of Firefox by replacing components written in C/C++. How that plays out for future OS/2 ports of Firefox.. we will see.

RDesktop 1.8.3 WPS Update

A new RDesktop Client update for OS/2 was just recently released, among some fixes and improvements it now includes a new WPS class that will be a gui like front end for the command line. Like this it is a seamless way to connect to a remote host including a login window. First you need to add the path of rdesktop.exe to the path and libpath in config.sys. You also need to add the host name (-n) to the config options on the protocol tab in the rdesktop properties notebook or the login window will silently quit without an error message.

RDesktop 1.8.3 for OS/2 WPS Class Properties Notebook

RDesktop 1.8.3 for OS/2 WPS Class Properties Notebook

RDesktop 1.8.3 for OS/2 connected target

RDesktop 1.8.3 for OS/2 connected target

NetDrive V3.1.5 for OS/2 released

It has been a while since version 3.1.4 which was released in 2011. NetDrive for OS/2 is now back with the new version 3.1.5, it contains some fixes and extensions for the updated SSH File Transfer Protocol (SFTP) plugin. NetDrive is shareware, this is also true for the new SFTP-Plugin V3.1.5. The Update is free for already registered 3.x program versions.

NetDrive 3.1.5 Control Panel

Netdrive 3.1.5 Control Panel

More information can be found on the offical Netdrive page

Firefox ESR 38 for OS/2: update to version 38.8.0

An update from 38.2.1 to 38.8.0 (Beta 7) has been released. There has been no major enhancements in the port except security fixes. Changes for this release:

  • native printing is disabled
  • simple (zip) based setups are not supported