PAL/NTSC Check?

[Super TWiT]

I am trying to sort out whether I truly have a pal or ntsc amiga and test different emulated conditions as well.  As it turns out, sysinfo always says I am operating under a pal setup (both with my real amiga and an emulated ntsc amiga 500).  Anyway, I found this assembler code from here.  When trying to assemble the topmost example with vasmm68k for linux, I get these errors

error 4 in line 1 of "code": no current section specified

error 4 in line 2 of "code": no current section specified

error 4 in line 3 of "code": no current section specified

warning 1022 in line 5 of "code": missing '

error 4 in line 5 of "code": no current section specified

error 4 in line 6 of "code": no current section specified

***maximum number of errors reached!***

Anyone have any ideas as to why the example code won't work?  Is it the way my text editor saves unix-type line returns?

[Franko]

I am trying to sort out whether I truly have a pal or ntsc amiga and test different emulated conditions as well.  As it turns out, sysinfo always says I am operating under a pal setup (both with my real amiga and an emulated ntsc amiga 500).  Anyway, I found this assembler code from here.  When trying to assemble the topmost example with vasmm68k for linux, I get these errorsAnyone have any ideas as to why the example code won't work?  Is it the way my text editor saves unix-type line returns?

While I only use DevPac myself and not in the standard way (ie: with includes etc...), after a quick look at the code your using, is the assembler package you use setting up the proper assign & includes for assembling. Otherwise things like the line...

cmp.b   #50,VBlankFrequency(a6)

The label VBlankFrequency would not be recognised...

I could quickly Assemble the code myself for you into a 68k prog and email you it if you really need it...

[Super TWiT]

I have no idea, I am completely new to assembly, and just was using vasm because it was free.  This is how I executed vasm from my terminal:

./vasmm68k_mot -o test code

The ./ is just launching an executable in linux.  I tried to run this

./vasmm68k_mot -Fhunkexe -o test -nosym code

as suggested by their tutorial to compile a CLI application, but I got this back

fatal error 17: could not initialize output module

[Super TWiT]

Okay, now we are getting somewhere.  I recompiled the application from source, and now the hunkexe module IS found.  Now, the compile errors I get are

warning 7 in line 5 of "code": ' expected

error 1 in line 5 of "code": illegal operand types

warning 7 in line 6 of "code": ' expected

error 1 in line 6 of "code": illegal operand types

I looked and there doesn't appear to be a produced output file.

[Franko]

Sorry I don't have a clue about Linux, but a quick look at the code your trying to assemble...

   move.l   4.w,a6          ; execbase
   cmp.b   #50,VBlankFrequency(a6)
   beq.s   .pal

     jmp   I'm NTSC
.pal   jmp   I'm PAL

   move.l  GfxBase,a6
     btst      #2,gb_DisplayFlags(a6)  ; Check for PAL
   bne.s   .pal

     jmp   I'm NTSC
.pal   jmp   I'm PAL

Firstly this would not assemble into anything useable even from the cli/shell. It needs routine's to print out on the cli/shell the result ie: PAL or NTSC. All this bit of code is for is to show you which bit's of the exec.library & graphics.library you would need to check in order to find out whether your Amiga is running in PAL or NTSC mode.

So unless you have the source code for the rest of the routines their is not much point in trying to assemble it at all, sorry...

[Super TWiT]

I don't, I just saw it online....  Do you know of any program that will tell me if I'm operating in ntsc or pal mode?  I tried sysinfo, but it always (no matter on my real amiga or on an emulated amiga which definitely is set to ntsc) that I'm running in PAL mode.

[mechy]

I don't, I just saw it online....  Do you know of any program that will tell me if I'm operating in ntsc or pal mode?  I tried sysinfo, but it always (no matter on my real amiga or on an emulated amiga which definitely is set to ntsc) that I'm running in PAL mode.

Try whichamiga from aminet, it will tell you just about everything i think.

[Karlos]

Instead of this test:

cmp.b   #50,VBlankFrequency(a6)

You could  write a few lines of C:

Code: [Select]

#include <stdio.h>
#include <exec/execbase.h>
#include <proto/exec.h>

int main(int argn, char** argv)
{
printf(&quot;VBlankFrequency is %u Hz\n&quot;, (unsigned)SysBase->VBlankFrequency);
return 0;
}

This will just print out the frequency, it won't do anything else. You should probably do it via GfxBase if using 2.x or higher.

Pretty sure that can be trimmed down if you use dos.library print rather than C stdio.

[Zac67]

Why, the easiest way to find out is to disable startup-sequence in Early Bootmenu and then ask your monitor what it's running on.