Re: [Freedos-user] HIMEMX.EXE - Invalid Opcode

2017-01-04 Thread Tony Richardson 
Although the standard installer gave me this same error, the legacy
installer worked fine.

Tony Richardson

On Jan 4, 2017 10:18 AM, "Jerome Shidel"  wrote:



> On Jan 4, 2017, at 9:16 AM, Tony Richardson 
wrote:
>
> I am having exactly the same problem (Invalid Opcode at HIMEMX line) with
a laptop from the same era.  FreeDOS 1.1 installed without problems.  I was
using the 1.2 standard CD.  I plan to try the 1.2 legacy CD tonight to see
if that makes a difference.  (Is there a description of the differences
between the standard and legacy installation CDs somewhere?)
>
> Tony

Yes. I've gone into the details in the FreeDOS-devel list and on Facebook
previously. But, don't think I've described it here.

Basically, the CD images are identical and install the exact same version
of FreeDOS. However, there is one major difference. The use different
booting methods. The Legacy (LGCY) version uses the original El Torito
bootable CD specification. To boot this CD, the system BIOS loads a image
file from the CD and uses it to emulate a floppy disk and boots it. The
normal FD12CD.iso is handled differently. It boots a binary image file for
ISOLINUX, this in turn uses memdisk to load and emulate a floppy for
booting.

Some systems behave erratically with one or the other method. For example,
the LGCY disc will appear to function correctly under VirtualBox. But, when
any program then access the data portion of the disc, the system freezes.
VirtualBox requires the FD12CD. But, some users have reported that method
did not work on their hardware and the LGCY version worked fine. These two
methods are mutually exclusive and cannot be combined without breaking
system compatibility with machines that only support the original
specification. So, both versions are required for maximum compatibility.

By all rights, any computer that supports booting from CD, should work with
the LGCY version. But, that is not the case. It may be the result of BIOS
vendors not fully testing their compatibility with the ancient CD boot
spec. But, it could be elsewhere.


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Re: [Freedos-user] HIMEMX.EXE - Invalid Opcode

2017-01-04 Thread Jerome Shidel 


> On Jan 4, 2017, at 9:16 AM, Tony Richardson  wrote:
> 
> I am having exactly the same problem (Invalid Opcode at HIMEMX line) with a 
> laptop from the same era.  FreeDOS 1.1 installed without problems.  I was 
> using the 1.2 standard CD.  I plan to try the 1.2 legacy CD tonight to see if 
> that makes a difference.  (Is there a description of the differences between 
> the standard and legacy installation CDs somewhere?)
> 
> Tony

Yes. I've gone into the details in the FreeDOS-devel list and on Facebook 
previously. But, don't think I've described it here.

Basically, the CD images are identical and install the exact same version of 
FreeDOS. However, there is one major difference. The use different booting 
methods. The Legacy (LGCY) version uses the original El Torito bootable CD 
specification. To boot this CD, the system BIOS loads a image file from the CD 
and uses it to emulate a floppy disk and boots it. The normal FD12CD.iso is 
handled differently. It boots a binary image file for ISOLINUX, this in turn 
uses memdisk to load and emulate a floppy for booting. 

Some systems behave erratically with one or the other method. For example, the 
LGCY disc will appear to function correctly under VirtualBox. But, when any 
program then access the data portion of the disc, the system freezes. 
VirtualBox requires the FD12CD. But, some users have reported that method did 
not work on their hardware and the LGCY version worked fine. These two methods 
are mutually exclusive and cannot be combined without breaking system 
compatibility with machines that only support the original specification. So, 
both versions are required for maximum compatibility.

By all rights, any computer that supports booting from CD, should work with the 
LGCY version. But, that is not the case. It may be the result of BIOS vendors 
not fully testing their compatibility with the ancient CD boot spec. But, it 
could be elsewhere. 

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Re: [Freedos-user] HIMEMX.EXE - Invalid Opcode

2017-01-04 Thread Tony Richardson 
I am having exactly the same problem (Invalid Opcode at HIMEMX line) with a
laptop from the same era.  FreeDOS 1.1 installed without problems.  I was
using the 1.2 standard CD.  I plan to try the 1.2 legacy CD tonight to see
if that makes a difference.  (Is there a description of the differences
between the standard and legacy installation CDs somewhere?)

Tony

On Tue, Jan 3, 2017 at 7:05 PM, Rugxulo  wrote:

> Hi,
>
> On Sun, Jan 1, 2017 at 4:43 PM,   wrote:
> >
> > I tried to boot FreeDOS 1.2 on my 2005 PC, specs:
> >
> > It is the FD12CD.ISO image, booted from CD-R. I chose "Install" and used
> > F8 to diagnose the problem.
> >
> > DEVICE=\FDSetup\BIN\HIMEMX.EXE stalls the system. It infinitely repeads:
> >
> > Invalid Opcode at 0FAE 1068 0046 0001 0002  0200   0183 
> > 4200 0001
> >
> > Skipping HIMEMX.EXE lets me continue with installation.
>
> I wonder if you somehow have a corrupted .iso download. Did you verify
> the md5sum? Also, what speed did you burn the CD-R? Slower (4x?) is
> presumably better. Even once burned, what is the md5sum of the
> HIMEMX.EXE file?
>
> Sure, it's possible that your machine somehow doesn't like HIMEMX
> (which seems strange). Who knows, it could be some subtle
> incompatibility due to BIOS (maybe?? turn off "Legacy USB"??).
>
> Or you may wish to try a different version (e.g. 3.32) just for
> comparison (or maybe even alternate drivers like FDXMS or XMGR).
>
> 
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Re: [Freedos-user] HIMEMX.EXE - Invalid Opcode

2017-01-03 Thread Rugxulo 
Hi,

On Sun, Jan 1, 2017 at 4:43 PM,   wrote:
>
> I tried to boot FreeDOS 1.2 on my 2005 PC, specs:
>
> It is the FD12CD.ISO image, booted from CD-R. I chose "Install" and used
> F8 to diagnose the problem.
>
> DEVICE=\FDSetup\BIN\HIMEMX.EXE stalls the system. It infinitely repeads:
>
> Invalid Opcode at 0FAE 1068 0046 0001 0002  0200   0183 
> 4200 0001
>
> Skipping HIMEMX.EXE lets me continue with installation.

I wonder if you somehow have a corrupted .iso download. Did you verify
the md5sum? Also, what speed did you burn the CD-R? Slower (4x?) is
presumably better. Even once burned, what is the md5sum of the
HIMEMX.EXE file?

Sure, it's possible that your machine somehow doesn't like HIMEMX
(which seems strange). Who knows, it could be some subtle
incompatibility due to BIOS (maybe?? turn off "Legacy USB"??).

Or you may wish to try a different version (e.g. 3.32) just for
comparison (or maybe even alternate drivers like FDXMS or XMGR).

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[Freedos-user] HIMEMX.EXE - Invalid Opcode

2017-01-01 Thread userbeitrag 
I tried to boot FreeDOS 1.2 on my 2005 PC, specs:

* BIOS

* Intel 945P chipset

* Pentium D-950 (64-bit capable)

* 2.5 GB DDR2 RAM

* SATA in "Compatible Mode" as P-ATA:

** Primary IDE Master: IOMEGA ZIP 250

** Primary IDE Slave: DVD-RW

* PATA from additional controller chip

** TRANSCEND IDE FLASH MODULE


It is the FD12CD.ISO image, booted from CD-R. I chose "Install" and used 
F8 to diagnose the problem.

DEVICE=\FDSetup\BIN\HIMEMX.EXE stalls the system. It infinitely repeads:

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


Skipping HIMEMX.EXE lets me continue with installation.


Just reporting...

Userbeitrag.


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