flat assembler
Message board for the users of flat assembler.
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DJ Mauretto 18 Aug 2011, 09:31
![]() ![]() ![]() ![]() What are you trying to do? DMA is a simple device read the spec http://ftp.utcluj.ro/pub/users/calceng/PMP/231466.pdf _________________ Nil Volentibus Arduum ![]() |
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fonolite 18 Aug 2011, 11:25
Thanks, DJ Mauretto
But I already know that 8237 ISA DMA as you link. I mean PCI DMA (Busmastering DMA) in below link. http://wiki.osdev.org/DMA#There_Is_More_Than_One_Kind_of_DMA_on_a_PC |
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DJ Mauretto 18 Aug 2011, 12:01
Quote: I mean PCI DMA (Busmastering DMA) in below link. Well, i ask you again, What are you trying to do? Do you wish to disable PCI busmaster DMA or what ? Note that it is a chipset specific configuration, it's not standard you must learn about your chipset ![]() _________________ Nil Volentibus Arduum ![]() |
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fonolite 18 Aug 2011, 23:40
Thanks, DJ Mauretto.
I want to stop this PCI Busmaster DMA for the certain time like masking ISA DMA. Not to disable it. You mean the northbridge chipset in my pc, right? I've searched it in the Intel 965 chipset datasheet , but I couldn't find that masking information. I'll search it again in detail. Thanks any way for your kindness... |
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DJ Mauretto 19 Aug 2011, 05:42
Quote: You mean the northbridge chipset in my pc, right? NO, the isa/pci dma interface is within southbridge under LPC device... Usually in PC desktop with intel chipset the southbridge is called ICH ![]() _________________ Nil Volentibus Arduum ![]() |
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