Re: [Freedos-devel] Working on a video review and found some issues

[Bernd Blaauw]

Op 4-12-2016 om 21:25 schreef Eric Auer:

> For those who prefer text, the message happens VERY early: MEMDISK,
> kernel, handling of the A20... Probably "as soon as XMS driver is
> loaded", although the XMS driver message itself is not visible in
> the screenshot. That would mean that the "legacy" distro would use
> another XMS driver version which is more stable? I assume FAT32 is
> used for the primary partition, probably with LBA support enabled?

Hi all.

Things worth trying:
* avoid DOS=HIGH
* avoid DOS=UMB

A more specific workaround might be adding parameters to MEMDISK for 
additional system compatibility ("raw/bigraw").

See: 
http://www.syslinux.org/wiki/index.php?title=MEMDISK#Set_memory_access_method_.28raw.2C_bigraw.2C_int_.2C_safeint.29


I don't know how the Syslinux (Isolinux?) bootmenu has been crafted, but 
assuming it's text-only rather than a menu, maybe it's worthwile adding 
a delay of 2 to 5 seconds before starting the default entry, thus giving 
people the opportunity to select a MEMDISK entry with alternative 
parameters.

As for FreeDOS 1.2 I'm happy it's being worked on and almost ready for 
release. I dreaded package updates and always got stuck into scripting 
batchfiles.

Bernd

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Re: [Freedos-devel] Working on a video review and found some issues

[Eric Auer]

Hi Phil,

>> Well Jerome is right that the "legacy friendly" distro works, but I
>> would still want to know which component of the default distro would
>> need a NEWER than Pentium CPU. After all, Pentium is quite new, too.
>>
>> I would expect that even the normal distro works when you skip loading
>> that part. For example ALL core components should be happy with 386.
>>
> 
> He explained that it has to do with the way they boot. Anyway, I captured
> the process and took a screenshot right at the moment the error happens. It
> is here: http://i.imgur.com/bZFSJkw.png

For those who prefer text, the message happens VERY early: MEMDISK,
kernel, handling of the A20... Probably "as soon as XMS driver is
loaded", although the XMS driver message itself is not visible in
the screenshot. That would mean that the "legacy" distro would use
another XMS driver version which is more stable? I assume FAT32 is
used for the primary partition, probably with LBA support enabled?

The screen shows:
old: int13 = f000b664 int 15 = f000f859 int 1e = f000efc7
Loading boot sector... booting...
FreeDOS kernel 2042 (build 2042 OEM:0xfd) [compiled May 11 2016]

...

C: HD1, Pri[1], CHS=0-1-1, start=0 MB, size=15406 MB
MEMDISK version 4.05 (2880 sectors)
KBC A20 method used
Kernel: allocated 45 Diskbuffers = 23940 Bytes in HMA

...

Invalid Opcode at 0FAE 1068 0046 0001 0002  0200  
0183  4200 0001 ...



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Re: [Freedos-devel] Working on a video review and found some issues

[Philip Hoefer]

Hi!


> Good to know :-) And good to know that Fade To Black is the only game
> with problems with SHSUCDX. My thought was that maybe SHSUCDX has some
> debug options so you could collect information whether any feature is
> called by the game for which SHSUCDX has known shortcomings... If the
> default SHSUCDX does not support that, even a patch could work, but I
> guess the game graphics would make it hard to see SHSUCDX messages?
>

I don't know if this is the only game, but it is the only game out of the
games I tried that had such an issue.


> Well Jerome is right that the "legacy friendly" distro works, but I
> would still want to know which component of the default distro would
> need a NEWER than Pentium CPU. After all, Pentium is quite new, too.
>
> I would expect that even the normal distro works when you skip loading
> that part. For example ALL core components should be happy with 386.
>

He explained that it has to do with the way they boot. Anyway, I captured
the process and took a screenshot right at the moment the error happens. It
is here: http://i.imgur.com/bZFSJkw.png

Phil
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Re: [Freedos-devel] Working on a video review and found some issues

[Eric Auer]

Hi again,

>> I have tried many optical drive drivers under MS-DOS and VIDECDD.SYS is
>> what I found to work best with games. Other drivers have issues with
>> certain games that use CD Audio, even the OAKCDROM.SYS that comes with
>> Windows 98 for example.

Good to know :-) And good to know that Fade To Black is the only game
with problems with SHSUCDX. My thought was that maybe SHSUCDX has some
debug options so you could collect information whether any feature is
called by the game for which SHSUCDX has known shortcomings... If the
default SHSUCDX does not support that, even a patch could work, but I
guess the game graphics would make it hard to see SHSUCDX messages?

 - Took me a while to figure out why FreeDOS wasn't running on my Pentium
>>>
>>> Please let us know which of our components expects a CPU which...

Well Jerome is right that the "legacy friendly" distro works, but I
would still want to know which component of the default distro would
need a NEWER than Pentium CPU. After all, Pentium is quite new, too.

I would expect that even the normal distro works when you skip loading
that part. For example ALL core components should be happy with 386.

And yes, it is nice to support FAT32 drives up to 2 TB LBA size, unless
your BIOS has some bug causing a lower limit. Even then, you can use
drivers which install in the MBR which were common back in that time.

>> Most 3D DOS games need a Pentium to run well, and when
>> playing at higher VESA resolutions, can you have enough power?

Of course you have a lot more power in Linux and Windows, where many
CPU cores can work for the game at the same time and the 3d graphics
driver can let many GPU cores work on 3d, but that only works for a
game written for that operating system, not for DOS games ;-)

Regards, Eric



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Re: [Freedos-devel] Working on a video review and found some issues

[Philip Hoefer]

>
>
>> The supplied driver probably means "the driver which came with
>> the drive". That would be a reasonable alternative in that case.
>>
>
> Sorry, with supplied driver, I was referring to the optical drive driver
> that comes with FD 1.2 RC2. I believe it is UDVD2.SYS which is loaded in
> AUTOEXEC.BAT file.
>
> I have tried many optical drive drivers under MS-DOS and VIDECDD.SYS is
> what I found to work best with games. Other drivers have issues with
> certain games that use CD Audio, even the OAKCDROM.SYS that comes with
> Windows 98 for example.
>
> But it's easy enough to recommend viewers to swap it out, VIDECDD.SYS can
> be found easily online.
>
>
>>
>> > - Even when replacing the optical drive driver, some CD based games have
>> > issues, such as Fade To Black. To resolve these I had to use MSCDEX.EXE
>> > from Microsoft
>>
>> That surprises me, SHSUCDX is quite feature rich. Would you be
>> interested to investigate those further?
>>
>
> Note that out of the games tested, Fade to Black is the only one that
> displayed different behaviour. I'm not sure how I can help here, it is
> likely something odd that the game executable checks or looks for when
> attempting to play the introduction. The game isn't available on GOG, but
> can be easily "obtained" on the Internet ;)
>
> But I'm just guessing and I am confident that this is a rather isolated
> case.
>
>
>>
>> > - I noticed that start-up menus are not compatible with FreeDOS.
>>
>> We do have start menus, but syntax differs from MS DOS style.
>> As far as I remember, discussion about that years ago had the
>> outcome that config / autoexec differ from MS DOS anyway, as
>> we ship other drivers with other option syntax, so no problem?
>>
>
> Ok no worries, I can just re-write my start-up menu, it's not a big deal :)
>
>
>>
>> > - Took me a while to figure out why FreeDOS wasn't running on my Pentium
>>
>> Please let us know which of our components expects a CPU which
>> is newer than Pentium. I would have expected everything on the
>> ISO to run on 386 or at least "486 DX with PCI" and up. Pentium
>> is really modern for most DOS things. It does lack a time stamp
>> counter, conditional move and all the fancy vector computing of
>> MMX and newer, but I expect VERY few DOS apps to require those.
>>
>> Even for USB or SATA drivers I would expect Pentium to be okay:
>> Of course they can say "no SATA, skipped", but should not crash.
>>
>
> Jerome answer this one nicely, it is easy enough to explain the viewers
> that there is a legacy version. As to what we might be using FreeDOS for,
> it's for gaming. Especially with FAT32 support, there is the ability to go
> past the 120/128 MB limit of MS-DOS 7.1, something people for DOS retro
> "power users". Most 3D DOS games need a Pentium to run well, and when
> playing at higher VESA resolutions, can you have enough power?
>
> But yea, it's easy to explain with the two versions. Using the Legacy ISO
> resolves this, so I'm happy :)
> ​
>
>>
>> > - Maybe included an option to run FDISK during the installation.
>> > I simply quit the installer and ran it manually.
>>
>> If you ask me, what you did is the best way. It shows that you
>> knew what you were doing and that we included FDISK ;-) I would
>> not try to nudge unskilled users into using risky tools as FDISK.
>>
>
> No worries, that is also straight forward to explain and demonstrate :)
>
>
>>
>> Regards, Eric
>>
>>
>> 
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>
>
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Re: [Freedos-devel] Working on a video review and found some issues

[Eric Auer]

Hi Phil,

> - The supplied optical drive driver doesn't seem to handle CD audio tracks
> well. Games such as Tomb Raider do not play any CD audio music. Replacing
> the supplied optical drive driver with resolves this issue for most games.

You wrote that VIDECDD worked. Did any free and open driver work?

The supplied driver probably means "the driver which came with
the drive". That would be a reasonable alternative in that case.

> - Even when replacing the optical drive driver, some CD based games have
> issues, such as Fade To Black. To resolve these I had to use MSCDEX.EXE
> from Microsoft

That surprises me, SHSUCDX is quite feature rich. Would you be
interested to investigate those further?

> - I noticed that start-up menus are not compatible with FreeDOS.

We do have start menus, but syntax differs from MS DOS style.
As far as I remember, discussion about that years ago had the
outcome that config / autoexec differ from MS DOS anyway, as
we ship other drivers with other option syntax, so no problem?

> - Took me a while to figure out why FreeDOS wasn't running on my Pentium

Please let us know which of our components expects a CPU which
is newer than Pentium. I would have expected everything on the
ISO to run on 386 or at least "486 DX with PCI" and up. Pentium
is really modern for most DOS things. It does lack a time stamp
counter, conditional move and all the fancy vector computing of
MMX and newer, but I expect VERY few DOS apps to require those.

Even for USB or SATA drivers I would expect Pentium to be okay:
Of course they can say "no SATA, skipped", but should not crash.

> - Maybe included an option to run FDISK during the installation.
> I simply quit the installer and ran it manually.

If you ask me, what you did is the best way. It shows that you
knew what you were doing and that we included FDISK ;-) I would
not try to nudge unskilled users into using risky tools as FDISK.

Regards, Eric


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Re: [Freedos-devel] Working on a video review and found some issues

[Jerome Shidel]

> On Dec 4, 2016, at 3:31 AM, Philip Hoefer  wrote:
> [..]
> 4. The error message was invalid opcode, but scrolled very fast and 
> indefinitely. I have seen this before with modern linux distributions when an 
> old CPU is not supported.
> 
> The note on the website is as follows:
> FD12CD.iso  (full 
> installer CDROM) —If you have problems with this image, try FD12LGCY.iso 
> 
> Using FD12LGCY, which I presume stands for legacy, works on a Pentium 200.

FD12LGCY does stand for Legacy. For the most part, both of the ISO images are 
identical. Except for one thing, the CD boot process. The good news is 
regardless of which CD you use. You will get the exact same version of FreeDOS 
and the exact same packages. The bad news, it appears both ISO versions are 
going to be required. 

Here is a little more information on the differences between the ISO versions. 

The FD12LGCY version uses the original “El Torito” bootable CD specification. 
Basically, it is limited to booting a floppy image as a BIOS emulated drive. 
This method should work on ALL hardware that supports CD booting. But, it does 
not. In my opinion, I think most BIOS manufacturers and Virtual Machine 
developers don’t do much testing with this ancient version of the 
specification. For example, FreeDOS will lockup when a program access the data 
portion of the CD-ROM from any program outside of COMMAND.COM under VirtualBox. 
Wether that bug is in VirtualBox or on the FreeDOS side is unknown. The FD12CD 
image uses a much later method of booting. It loads a binary blob (SYSLINUX) as 
a boot loader.  That runs MEMDISK which loads and emulates a floppy disk image. 
This is a much more complicated process. But, this method is preferred for 
newer hardware and works fine on VirtualBox. This is probably do to MEMDISK 
emulating the floppy instead of the BIOS. So, nearly all hardware prior to a 
Pentium II (I think) will not be able to boot using the more complex binary 
blob process. This leaves a narrow range of hardware that may have a CD-ROM and 
will require the FD12LGCY version (probably 386 thru Pentium II). 

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[Freedos-devel] FreeDOS 1.2 RC2 - Hungarian Keyboard

[Roland Tóth Roland]

Hi people,

I want to suggest this:
[FDCONFIG.SYS]
COUNTRY=036,852,C:\DOS\BIN\COUNTRY.SYS
[AUTOEXEC:BAT]
SET lang=HU
DISPLAY CON=(EGA,,1)
MODE CON CODEPAGE PREPARE=((852) c:\DOS\CPI\EGA.CPX)
MODE CON CODEPAGE SELECT=852
KEYB hu,852 /ID:208

Regards, Roland
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Re: [Freedos-devel] Working on a video review and found some issues

[Philip Hoefer]

1. I used VIDECDD.SYS and CD Audio started working
2. In Fade 2 Black it will jump straight into the game, skip the
introduction. Replacing SHSUCDX with MSCDEX resolves this issue
3. A typical startup menu like this:

[MENU]
REM Define an item in the menu, first identifier and then what
REM is written in the menu
MENUITEM=DOS, DOS with CD-ROM
MENUITEM=WIN, Windows

REM The commands at COMMON is executed no matter what is chosen
REM in the MENU
[COMMON]
DOS=HIGH,UMB

REM For each menu item there can be defined a configuration
[DOS]
DEVICE=C:\DOS\HIMEM.SYS /TESTMEM:OFF
DEVICE=C:\DOS\EMM386.EXE NOEMS
DEVICE=C:\CDROM\DRIVER.SYS /D:CD1

[WIN]
DEVICE=C:\DOS\HIMEM.SYS /TESTMEM:OFF

Whereas FreeDOS uses a different format:

MENU
MENU  select your configuration
MENU
MENU  use (0) for basic configuration
MENU  use (1) for CDROM operation
MENU  use (2) for NETWORK configuration
MENU
MENUDEFAULT=0,1 ( configuration 0, wait 1 second)


1?  rem CDROM
1?  device=CDROM.SYS

2?  rem NETWORK
2?  device=MyNetworkDriver.SYS

4. The error message was invalid opcode, but scrolled very fast and
indefinitely. I have seen this before with modern linux distributions when
an old CPU is not supported.

The note on the website is as follows:


   - FD12CD.iso  (*full
   installer CDROM*) —If you have problems with this image, try FD12LGCY.iso
   

Using FD12LGCY, which I presume stands for legacy, works on a Pentium 200.

Thank you!

Regards,

Philip

On 4 December 2016 at 16:13, Louis Santillan  wrote:

> On Sat, Dec 3, 2016 at 6:45 PM, Philip Hoefer
>  wrote:
> > Hello!
> >
> > Excited about the new version and have begun working on a YouTube review
> for
> > version 1.2. I focus on games, so that's what I test.
> >
> > Trying out a few games I found the following:
> >
> > - The supplied optical drive driver doesn't seem to handle CD audio
> tracks
> > well. Games such as Tomb Raider do not play any CD audio music. Replacing
> > the supplied optical drive driver with resolves this issue for most
> games.
> >
>
> Did you replace the Optical Drive driver with an OEM one?
>
> > - Even when replacing the optical drive driver, some CD based games have
> > issues, such as Fade To Black. To resolve these I had to use MSCDEX.EXE
> from
> > Microsoft
> >
>
> Can you be more specific about the issues you're having?
>
> > - I noticed that start-up menus are not compatible with FreeDOS. It uses
> a
> > different method for menu options which means a lot of existing menus
> won't
> > be working with FreeDOS
> >
>
> Can you be more specific about the issues you're having?  There's been
> some recent talk about FD Command.com so there may be some interest to
> work on it.
>
>
> > - Took me a while to figure out why FreeDOS wasn't running on my Pentium
> PC.
> > I had to use the legacy version. There is a note related to this on the
> > download page, but it's ambiguous.
> >
>
> Why did it not run?  I do not see the note.
>
> > - Maybe included an option to run FDISK during the installation. I simply
> > quit the installer and ran it manually.
> >
> > Thank you for listening and keep up the good work!
> >
> > Phil
>
> 
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Re: [Freedos-devel] Working on a video review and found some issues

[Louis Santillan]

On Sat, Dec 3, 2016 at 6:45 PM, Philip Hoefer
 wrote:
> Hello!
>
> Excited about the new version and have begun working on a YouTube review for
> version 1.2. I focus on games, so that's what I test.
>
> Trying out a few games I found the following:
>
> - The supplied optical drive driver doesn't seem to handle CD audio tracks
> well. Games such as Tomb Raider do not play any CD audio music. Replacing
> the supplied optical drive driver with resolves this issue for most games.
>

Did you replace the Optical Drive driver with an OEM one?

> - Even when replacing the optical drive driver, some CD based games have
> issues, such as Fade To Black. To resolve these I had to use MSCDEX.EXE from
> Microsoft
>

Can you be more specific about the issues you're having?

> - I noticed that start-up menus are not compatible with FreeDOS. It uses a
> different method for menu options which means a lot of existing menus won't
> be working with FreeDOS
>

Can you be more specific about the issues you're having?  There's been
some recent talk about FD Command.com so there may be some interest to
work on it.


> - Took me a while to figure out why FreeDOS wasn't running on my Pentium PC.
> I had to use the legacy version. There is a note related to this on the
> download page, but it's ambiguous.
>

Why did it not run?  I do not see the note.

> - Maybe included an option to run FDISK during the installation. I simply
> quit the installer and ran it manually.
>
> Thank you for listening and keep up the good work!
>
> Phil

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