Re: Dosemu cpu exception

[Ivan Baldo <ibaldo@adinet.com.uy>]

    Hello Hans.
    There is a tracker at http://sourceforge.net/projects/dosemu , I 
don't know if any DOSEmu developer reads this list so maybe it is more 
effective to use the tracker there (or maybe not...).
    Thanks!!!
    Bye.


El 13/04/09 18:44, Hans Bausewein escribió:
> Hello DOSEMU team,
>
> I could not find where to report bugs, so I hope this is a valid way.
>
> It seems that DOSEMU does not support newer CPU's. Maybe simply, because
> it was not updated since they arrived. I've checked the SVN version at
> http://dosemu.svn.sourceforge.net/viewvc/dosemu/trunk/src/base/init/
>
>
> My /proc/cpuinfo says:
>
> vendor_id       : AuthenticAMD
> cpu family      : 16
> model           : 2
> model name      : AMD Phenom(tm) 9550 Quad-Core Processor
>
>
> The
>
>   switch (get_proc_intvalue_by_key(
>           kernel_version_code > 0x20100+74 ? "cpu family" : "cpu" )) {
>
> in src/base/init/config.c tests for values 5, 6, 586, 686, 15.
>
> The result is that config.cpu_spd is zero, which causes a "Division by
> zero" on booting dos.
>
>
>
> If you run dosemu with options
>   -h0 -O
> it dumps the configuration to stderr.
>
> It dumps (among a lot else):
>   CPUclock infMHz
>
> That is a (poorly formatted) "infinity" result of the division:
>
>   (((double)LLF_US)/config.cpu_spd)
>
> in src/base/init/config.c
>
> Adding a case 16 to the switch statement solves this. It reports the CPU
> speed as 2210.17 MHz
>
> It also makes my DOSEMU boot. I'm not sure whether it's completely OK, yet.
> See the attached patch to the 1.4.0 version.
>
> There are more newer processors around. Here's number 17 in this Ubuntu
> bug report:
>
> https://lists.ubuntu.com/archives/universe-bugs/2009-January/036704.html
>
> Hans
>
>
>   

-- 
Ivan Baldo - ibaldo@adinet.com.uy - http://ibaldo.codigolibre.net/
From Montevideo, Uruguay, at the south of South America.
Freelance programmer and GNU/Linux system administrator, hire me!
Alternatives: ibaldo@codigolibre.net - http://go.to/ibaldo

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