> Hi,
> 
> AFAIK at least every chipset ond probably every motherboard 
> manufacturer has his own definition of such options.
> 
> The Asus P5A-B and K7M (P2B does not seem to have that option) 
> manual says:
i have asus with intel 440BX+extra HPT366 controller
 
> "If Enabled, it frees the PCI Bus during CPU accessing of 8-bit ISA 
> cards which normally consume about 50-60 PCI Clocks without PCI 
> delayed transaction. If PCI Bus Masters cannot use the PCI Bus, 
> leave this on the default setting of Disabled for ISA cards that are 
> not PCI 2.1 compliant."
now understand. my old zoltrix internal modem is surely not compatible -
and the problem was only when i downloaded something
 
> If I understand that correctly, if your ISA and PCI cards go well 
> together, you can get performance enhancements if you enable this. 
> If the ISA and PCI cards do not get along and you enable this 
> option, while an ISA card is accessing the CPU, PCI cards could be 
> blocked and errors can occur.
> 
> HTH
> 
> mike
> 
> 
>