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Groups > comp.os.msdos.programmer > #849

Re: 64bit access in DOS mode...

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On 2013-03-08 09:19, liaoo wrote:
> I have one question about the 64-bit access in DOS mode...
>
> Before I wrote one application using (watcom c+dos/32a) and it can access all
> the memory space under 4GB successfully... * DOS/32a provides flat mode !
>
> Ex. I used below function to write 4-Byte:
> ============================================
 > void PciMemWtDW( DWORD memaddr,
>  DWORD data ) { DWORD *ptr = (DWORD *)memaddr; *ptr = data; }
> ============================================
>
> My question is: is it possible to access the memory above 4GB if I installed
>  8GB DRAM ?
>
> If not... then is there any other way to solve this issue ?

http://board.flatassembler.net/topic.php?t=8768
http://www.japheth.de/JWasm/Dos64.html

Robert
-- 
Robert AH Prins
robert(a)prino(d)org

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Thread

64bit access in DOS mode... liaoo <jimmyliaoo@gmail.com> - 2013-03-08 01:19 -0800
  Re: 64bit access in DOS mode... Robert AH Prins <spamtrap@prino.org> - 2013-03-08 12:12 +0000
  Re: 64bit access in DOS mode... rugxulo@gmail.com - 2013-03-14 07:22 -0700

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