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w3sz | 1 Nov 01:07
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Fwd: Re: svgalib 1.9.23 broken here

Hello, All,

Matan sent me a patch that fixes the problem with text not clearing  
properly from the screen when one goes from one window to the next with  
1.9.23.  If you have the problem, here is what worked for me:

1.  put the patch in a file named patchvga.h [or any other name; just  
change the command line]
2.  copy lrmi.c and lrmi.h from svgalib-1.9.21 to 1.9.23 src directory
3.  patch vga.h with patch named patchvga.h that is in svgalib-1.9.23  
directory using command:  patch src/vga.h -i patchvga.h
4.  gedit vga.h and replace all [2] instances of LRMI_regs with vm86_regs.
5.  then make uninstall, make clean, make install, make demoprogs

The patch is here:

--- svgalib-1.9.23/src/vga.h2005-10-04 16:36:55.000000000 +0300
+++ svgalib-1.9.24/src/vga.h2005-10-31 20:09:01.000000000 +0200
@@ -266,7 +266,7 @@

  /* Don't use linear in vga modes (even 320x200x256). It does not work  
with some
   * cards. */
-#define CAN_USE_LINEAR (__svgalib_modeinfo_linearset & LINEAR_USE &  
!STDVGAMODE(CM))
+#define CAN_USE_LINEAR ((__svgalib_modeinfo_linearset & LINEAR_USE) &&  
!STDVGAMODE(CM))

      typedef struct {
  int width;
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Koellner, Guenter | 7 Nov 08:53
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Delta Audiophile 2496 input levels

Hello,

recently I got a Delta Audiophile 2496 sound card. Currently I am only using it under Windows, but Linrad is
my later goal. In the mean time I am using it for Spectran, where it is really fine to sample with 96k and then
have a really fast running display, e.g. in the MMC.

There is only one problem which I was not able to solve: While I had to externally attenuate my input signal
with all of my previous sound cards in order not to overdrive the input (so the level that came from the TRX
was much too high), the Delta 2496 cannot become saturated at all. E.g. on Spectran I can only get around 20%
of the level, on WSJT the noise level can be set to be -5dB in the maximum.

By the way: I am still using W98 here. There is no Windows sound mixer available when the Delta 2496 is
installed, the only mixer application is the M-Audio mixer (nice grapical design).

Are there any hints what to do in this case?

73, Günter, DL4MEA

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leif-NjylAwyOilXQT0dZR+AlfA@public.gmane.org | 10 Nov 16:18

Linrad-02.pre

Hi All, 

The below text (with links) can be found here:
http://www.sm5bsz.com/linuxdsp/linroot.htm

73

Leif / SM5BSZ

Linrad-02.pre.02
For experienced Linrad users only Multithreaded Linrad for 
Linux and Microsoft Windows 98, 2000 and XP will come with 
the linrad-02.xx series.

Here is an experimental package for experienced Linrad users. 
lir02p02.tbz(399302 bytes) The package should compile and run 
under any Linux distribution. The command "make linrad.exe" 
will require GLIBC_2.3 if mingw32.tar.bz2 (11 665 983 bytes) 
is installed. If you want to try Linrad-02.pre.02 on a Windows 
machine, download w102p02.zip (254239 bytes) and uncompress 
it into C:\linrad and run linrad.exe from there.

Linrad-02.pre.02 is not fully adapted to the multi-threaded 
structure. Screen writes still occur from several threads 
and therefore the text colour becomes incorrect occasionally. 
The screen is not repainted under Windows after a Windows 
window resize. Processing may be stopped or started incorrectly 
after parameter changes and the program may even crasch after 
a parameter change that leads to a memory reorganization. 
All these problems are similar both under Linux and Windows.
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leif-NjylAwyOilXQT0dZR+AlfA@public.gmane.org | 10 Nov 16:39

Re: Delta Audiophile 2496 input levels

Hi Günter,

 
> recently I got a Delta Audiophile 2496 sound card. Currently I am 
> only using it under Windows, but Linrad is my later goal. In the 
> mean time I am using it for Spectran, where it is really fine to 
> sample with 96k and then have a really fast running display, 
> e.g. in the MMC.
You might try this card with linrad.exe under Windows:-)

> There is only one problem which I was not able to solve: While I 
> had to externally attenuate my input signal with all of my previous 
> sound cards in order not to overdrive the input (so the level 
> that came from the TRX was much too high), the Delta 2496 cannot 
> become saturated at all. E.g. on Spectran I can only get around 
> 20% of the level, on WSJT the noise level can be set to be -5dB 
> in the maximum.

 
> By the way: I am still using W98 here. There is no Windows 
> sound mixer available when the Delta 2496 is installed, the 
> only mixer application is the M-Audio mixer (nice grapical design).
If there is no switch to set the sensitivity in the M-Audio mixer
I would guess the card always has its peak level at 4V RMS.

> Are there any hints what to do in this case?
In case your hardware is good enough for the noise to be invisible
when your preamplifier is switched off you need an audio
amplifier;-)
(Continue reading)

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Conrad_G0RUZ | 11 Nov 00:43

Is this thing working?

Hello the last message that I got from this mailinglist was on the 23/9/05.
Has there been no messages since then? I suspect that something must be
broken so I have re-subscribed with my new email address.

I am preparing to have an Xpol set-up on 2m and will probably buy the full
Linrad hardware sometime soon. If there is a much cheaper way that I can
experiment that has PCBs readily available that will do a two channel IQ
pair then I would be interested in knowing about it. I am rapidly running
out of money as I have equipped eme stations for 144, 1296, 2320 and 10368
MHz.

73

Conrad G0RUZ

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Koellner, Guenter | 11 Nov 06:56
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AW: [linrad] Linrad-02.pre

Hello Leif,

yesterday I went further into the problem, also having done a short question on M-Audio's support:
Actually it was the input impedance of the 1496 that lowered the level. Just a simple opamp driver with
gain=1 driven by a 9v battery does it.

I have somehow not recognized that windows. Can you please somehow set me on the rails? Maybe only point me to
the file in the linrad archive?

73, Günter

-----Ursprüngliche Nachricht-----
Von: Linrad mailinglist [mailto:linrad@...] Im
Auftrag von leif@...
Gesendet: 10 November 2005 16:19
An: Linrad mailinglist
Betreff: [linrad] Linrad-02.pre

Hi All, 

The below text (with links) can be found here:
http://www.sm5bsz.com/linuxdsp/linroot.htm

73

Leif / SM5BSZ

Linrad-02.pre.02
For experienced Linrad users only Multithreaded Linrad for 
Linux and Microsoft Windows 98, 2000 and XP will come with
(Continue reading)

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Pierre Vanhoucke | 11 Nov 09:47
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Re: Linrad-02.pre


----- Original Message ----- 
From: <leif@...>

> Hi All,
> It is too early for bug reports, on the behaviour of Linrad-02
> itself, but reports on problems encountered with the build
> system under any Linux distribution or the hardware interface,
> selecting screens, fonts, or soundcards under Windows as well
> as Linux are welcome.

No problems with the build system under Suse9.2, with delta44 and oss  :).

Congratulations.

P.S. If I try to watch the cpu usage of linrad-02.pre.02 with top via a 
remote ssh connection,
the  PID of linrad is not displayed anymore.
With linrad-01.35,  the PID of linrad showed abaout 99% cpu usage.
Any idea why?

73,
Pierre/ON5GN

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leif-NjylAwyOilXQT0dZR+AlfA@public.gmane.org | 11 Nov 11:08

Re: AW: [linrad] Linrad-02.pre

Hi Günter,

Look for w102p02.zip near the bottom of:
http://www.sm5bsz.com/linuxdsp/linroot.htm

73

Leif / sm5bsz

> I have somehow not recognized that windows. Can you please 
> somehow set me on the rails? Maybe only point me to the 
> file in the linrad archive?

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leif-NjylAwyOilXQT0dZR+AlfA@public.gmane.org | 11 Nov 12:38

Re: Linrad-02.pre

Hi Pierre and all,

> P.S. If I try to watch the cpu usage of linrad-02.pre.02 with top via a 
> remote ssh connection,
> the  PID of linrad is not displayed anymore.
> With linrad-01.35,  the PID of linrad showed abaout 99% cpu usage.
> Any idea why?

01-35 should give 100%, maybe ssh needs 1% and that is why you 
read 99% only:-)

I do not know how to use ssh, but I guess you would find a much lower
value, close to the cpu load on the Linrad screen if you change
the general setup to use usleep in the idle loop.

Multi-threaded linrad shows up as several PIDs if I use AltF to 
look from another console in text mode. This is with older kernels
that repoart the individual threads. With modern kernels there
is only a single PID for the entire linrad task and the cpu load
reported is similar to the value linrad reports.

When using a second terminal while running linrad-02.xx you must
have logged in before starting linrad, otherwise linrad will not
continue to run happily (with the screen thread waiting for svgalib)

73

Leif / SM5BSZ

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Pierre Vanhoucke | 11 Nov 14:33
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Re: Linrad-02.pre and ssh


----- Original Message ----- 
From: <leif@...>
>
> I do not know how to use ssh

It is very simple ( at least  in my SUSE9.2 standard configuration) and has 
the very important  benefit of keeping an access to a linux box  via a tty 
session when the  console-driver  in the target system is dead  (for example 
due to svgalib troubles ), or when one wants to monitor linrad.

The only command I have to enter is:
"ssh 192.168.1.105"
where 192.168.1.105 is the IP number of the linux box I want to access.
This IP¨number is the one that is displayed in one of the startup-messages 
of the target linux system.
.
You can also acces the target linux system from a Windows box in the same 
lan .
All you have to do there is download and install the  "putty" program from 
the internet in your windows computer, start putty and enter the same IP 
number as above.

The basic requirements are of course that the two computers are connected in 
a lan, that ssh is installed  AND that the firewall on the target linux box 
is disabled (brute force solution ) , or configured in such a way that ssh 
sessions are allowed.

73,
(Continue reading)

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