IDE driver utilizing slave DMA, possible?

[DHL]

Hi all ATers, this is my 1st post, don't know whether this is the rite place to ask this....but here it is

I was looking at my old 486 one day, it has a HDD controller as a add on ISA card. Info in win95 device manager showed that it is not DMA capable (no DMA checkbox), at the same time there are both 8 and 16 bit system DMA channel available.

I thought to use slave DMA, special hardware are not necessary but only an IRQ, a DRQ, and a driver that will set it all up, therefore it would be possible that such a driver can increase performance and use system resource more efficiently. However I could not find anything about such drivers for windows. Does that mean my understanding is not quite complete and this idea is actually not feasible? Can anyone shed some light on this.......

I know it is a bit late to ask this, it should be ask when the mighty 486s were still roaring on the planet

DHL

 

[DHL]

Is this not technical enough? ttt

 

[CTho9305]

if someone feels it isn't technical enough, we'll flame you
i think this means nobody who has seen your thread has any idea!

 

[DHL]

Thanks for the comment, at least I know what's wrong.

Basically I am asking if any ISA devices can use the system DMA controller to do data transfer JUST by mean of special software drivers?

I think this is more relevant to ISA devices as most of the PCI devices I have seen have bus mastering capability.

Thanx