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Messages - Olafur Gunnlaugsson

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Setup & Installation / Re: Trials and Tribulations
« on: May 20, 2023, 07:01:28 am »
Panorama nor Snap will not work on either the Nvidia MX400 or an S3 Trio I have and the only way I could see anything was to setup as SVGA
SNAP should work on those two cards, but as an alternative both of these cards have a discrete native OS/2 drivers, in the case of the S3 Trio, both classic and GRADD versions.

ArcaOS does not support 6x86 chips like the K6 BTW, some of the Arca supplied code is compiled for 686 using GCC and may not work on your setup. eCS is a much better bet.

Hardware / Re: [Solved] Iomega ZIP 100 IDE
« on: May 16, 2023, 03:33:49 am »
I tried DFSee, but DFSee does not see the drive at all. LVM can see the drive, but no operation actually works. I tried renaming the drive, and it says it worked, but when I open it again in LVM, the original lack of disk name appears.

MiniLVM shows an extra unavailable drive with the right size, but no operation is allowed.

I found a USB zip drive and hoked it to an ArcaOS 5.1 beta system. Everything seems to work. I can verify that my zip disks are working. I used this system to assign a drive letter to the disk.

Back on the IDE Zip drive system, the disk with LVM information does not appear. Adding a drive letter does not seem to help.

Wasn't there a kink with the IDE ZIP drives? Did they not show some strange behaviour if they were set up as busmasters, especially with some chipsets? It's been 25 years, but I gave up on IDE ZIP's altogether for some such reason and only used SCSI versions.

I can vaguely recall setting it up for friends a few years later that the most successful setup was having them as a slave on IDE channel 2, with the caveat that most MB's post 2005 only have one IDE channel ...

Hardware / Re: OS/2 Warp 3 Graphics Card Selection Input?
« on: May 11, 2023, 03:14:47 pm »
I have a machine with 16-bit ISA slots and I'm looking to install OS/2 WARP Version 3. What would some graphics card recommendations be as I know driver support was always an issue with OS/2 that didn't get better to WARP 4. Been searching for a compatibility matrix for what drivers where included in WARP 3 but having a hard time tracking that down.

Trident ISA cards using IBM drivers are the best bet for ISA, some of the Trident ISA drivers even have features that later drivers do not support such as changing resolutions without rebooting etc. Pro level ISA cards such as Matrox, S3 et. al. work well but are impossible to find. Tseng Lab. cards work well too, but have slow DAC's, but superb DOS support. Cirrus Logic (aka acu MOS, etc), ATI and SiS also work well but similarly have a slow DAC with the exception of a couple of ATI cards.

Almost any ISA card can be made to work actually, I used an obscure Avance Logic (aka Realtek) ISA card for years, that I have never seen offered for sale before or since, despite keeping an eye out for it on eBay for a quarter of a century.

Applications / Re: Running old OS/2 Software - Issues
« on: December 23, 2022, 05:38:25 pm »
Did an old version of OS/2 have a spreadsheet applet? Perhaps as an example program. I tested ver 2.1 at one time and it had some different programs installed but can't remember what now and have never installed anything older. Sounds like it from the readme.
Yes, some 2.x versions had a tiny spreadsheet and PIM.

I am not certain. But even when a trademark its registration has not been extended by the trademark owner. Then I am do not think you can just use.
As IBM still retains ownership of the word OS/2.  This might also vary from region to region in the world.

No, that applies to copyrights and automatic grants of IP ownership in general (for most countries anyway, those that are fully signed up to the Berne convention). Trademarks are different, they have some aspects of IP but are mostly grants of goodwill, you have to register them, keep the registration current and defend them, otherwise you lose the exclusive rights to use them.

IBM & MS can object to you registering the OS/2 trademark, but they will have to show that they are currently using it, show that you are not currently using it and are thus attempting to register it in bad faith, and will have to show a valid reason for not having maintained the trademark registration. They cannot stop you from using it on t-shirts or other products, since they no longer have any claim on it.

The CE world is full of trademarks that have at one time been taken over by unrelated companies or individuals by re-registering the trademark rather than buying them from a trademark owner, for example Nikko, Telefunken, Universal Audio, Moog, Scott, Audio Note, etc.

Programming / Re: New frontends for GCC 13...
« on: December 17, 2022, 11:17:38 am »
...due sometime next year..

When the GCC 13 code gets closer to release, I'll look at building it, noting that GCC 13 will drop support for STABS debug code, so we won't be able to built debug code....

The M2 integration was supposed to happen with GCC12 (and funnily enough with GCC 0.x as well), so I am not holding my breath ...

some news... i still can't tell what happen exactly, but it might be the TI 486 SXLC2 having some troubles with OS/2.
but i can't easily swap with the original 386, as i soldered the TI and don't plan roll back anyway.
Should not be a problem with the CPU on its own, I ran OS/2 v3 on an ISA board with a Cx486SLC for years, up to fixpack 4x, the only difference between that chip and yours is a bigger cache and optional clock doubling. If you can get hold of TI's utility software package that they distributed for the chip, you can try toggling the clock doubling feature on and off, but I doubt that would make a difference.

I sold a number of these as upgrade chips (on a socketed PCB typically) and as budget replacement motherboards in its day and while we did provide the TI software package to people, no-one ever seemed to use it since they were more or less plug and play.

IBM did supply updated firmware and configuration software for some of those ISA based PS systems, such as the PS/1 386sx, as they had some problems with booting OS/2 32bit but I have no idea if that applies to your system.

Applications / Re: DOS version on ArcaOS
« on: July 27, 2022, 02:22:27 am »
There are DOS 1 programs, DOS v1 was quite different, no directories, FSB's, making it more like CPM.
It is also possible to boot CPM86 on OS/2.

DOSPlus works better than CP/M86 under OS/2, and it runs all CP/M86 programs and most DOS programs as well, it can be downloaded for free from the official DR site.

Hardware / Re: Lenovo Thinkcentre M73p
« on: June 16, 2022, 01:20:09 am »
I have the SFF version of this model with a transplanted Xeon in it, running eCS. Do not recall having any problems setting it up.

Setup & Installation / Re: Quick question about boot manager
« on: January 08, 2022, 05:08:23 pm »
I want to setup a replacement computer system with multiple operating systems on it.

I have learned that the boot manager that comes with ArcaOS is useless on any of my AMD Ryzen based systems - it does not display any of the menus so it is impossible to select an OS.

Before I start this project I would like to know if anyone is using the old OS/2 boot manager in such a situation.  I know the primary partition limitations and since I only want three operating systems on this new system (Boot Manager, OS/2(ArcaOS), Linux Mint and Win7).  There will be several hard disks - the number will depend on how well the system will work.

The reason for this is because I am fedup with having 5 or more computers running at the same time all feeding into a KVM switch and two monitors, also on a HHDMI switch.

Any information and comments?  Thanks in advance.

I used the boot manager built into Windows 8 to boot into OS/2 and other OS's, a few years back. I have not tried it with Win 10 as I simply use the EFI/BIOS emulator switch built into the UEFI firmware to switch between two disks, one with GPT and one with MBR.

Web applications / Re: The MicroWeb DOS web browser
« on: January 08, 2022, 03:53:20 pm »
It is possible to run DOS packet drivers in a DOS session if you disable the DOS/2 networking, but not recommended, FTP Software (the company) also sold a TCP/IP stack for OS/2 that had a VDD that allowed DOS sessions to use DOS packets via emulation, but alas that is impossible to get hold of these days. The Essex Systems stack also had some VDD trickery, but I cannot remember it it supported the FTPS packets specification.

Is it true these older OS/2 TCP/IP and NetBIOS over TCP implementations used proprietary APIs which limited their use to only the network applications/services that were distributed with these packages?

The stacks were mostly compatible when using the same protocols, the low level or packet interfaces on OS/2 1.x varied from provider to provider however, for OS/2 2x this matterred less since NDIS was provided as standard and most stacks just layered on top of that (NDIS was available for 1.x, but not supplied as standard, except possibly with 1.3).

Web applications / Re: The MicroWeb DOS web browser
« on: January 08, 2022, 03:46:34 pm »

So, I need to  find the documentation inside the  "IBM TCP/IP for DOS 2.1.1 Programmer's Toolkit".

On the "IBM TCP/IP VERSION 2.0 FOR OS/2" announcement there are some references to something called "DOS/Windows Access Kit"

DOS/WINDOWS ACCESS KIT:  This facility allows DOS applications written to the IBM TCP/IP for DOS Version 2.1 programming interfaces, and Windows applications written to the Windows Sockets API Version 1.0 or Version 1.1 specifications to run in an OS/2 environment on top of IBM TCP/IP Version 2.0 for OS/2.  This product requires the customer to have the OS/2 Version 2.1 operating system installed.

I'm still trying to find something on a package of TCP/IP 2.0 for OS/2, but I still haven't find that documentation.


The OS/2-DOS TCP/IP interface is basically WINSOCK

Web applications / Re: The MicroWeb DOS web browser
« on: January 05, 2022, 02:27:38 am »
VDOSTCP.SYS emulates a Windows TCP/IP stack interface, MicroWeb uses a DOS TCP/IP stack (mTCP) that relies on DOS packet drivers, which are different to the Windows packet drivers, they are a bit more like early Unix an Linux packet drivers. It might be possible to configure the program to use the native stack .

It is possible to run DOS packet drivers in a DOS session if you disable the DOS/2 networking, but not recommended, FTP Software (the company) also sold a TCP/IP stack for OS/2 that had a VDD that allowed DOS sessions to use DOS packets via emulation, but alas that is impossible to get hold of these days. The Essex Systems stack also had some VDD trickery, but I cannot remember it it supported the FTPS packets specification.

You can also try the Archane browser, it used to work with Windows sockets/packets in an OS/2 DOS window, it saw some updates in the last two years.

Multimedia / Re: Updated Uniaud32 build
« on: October 25, 2021, 07:06:40 am »
Thanks for the heads up.
FYI, Here it is the link:


Is there a parsing bug in the forum software? The link shows up correctly as
However the actual link is ftp// i.e., the : is dropped

Utilities / Re: MultiUser support for OS/2
« on: October 15, 2021, 02:42:43 am »
Hi Martin

No idea if DeskMan/2 is still available

You can toy around with a slightly older version here:

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