Welcome to Vista Banter. You are currently viewing our boards as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to ask questions and reply to others posts, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact support. |
|
Hardware and Windows Vista Hardware issues in relation to Windows Vista. (microsoft.public.windows.vista.hardware_devices) |
|
LinkBack | Thread Tools | Display Modes |
|
|||
IDE Controler CMD 0649 PIO Mode 4 only
I use the IDE Controller CMD 0649 chipset for my DVDRRW optical rives the
controller is capable of ATA 100. Device Manager shows it as PIO mode 4 & the Enable DMA box is disabled. Editing the registry manually I am able to change to DMA mode but it resets upon a reboot. |
|
|||
IDE Controler CMD 0649 PIO Mode 4 only
First thing to check is that you have an 80 wire cable and not an old 40
wire. -- Cari (MS-MVP) Windows Technologies - Printing & Imaging http://www.coribright.com/windows "Flash" wrote in message ... I use the IDE Controller CMD 0649 chipset for my DVDRRW optical rives the controller is capable of ATA 100. Device Manager shows it as PIO mode 4 & the Enable DMA box is disabled. Editing the registry manually I am able to change to DMA mode but it resets upon a reboot. |
|
|||
IDE Controler CMD 0649 PIO Mode 4 only
PIO 4 is actually multi-word dma 2 which is what many optical drives still
only run at. "Flash" wrote in message ... I use the IDE Controller CMD 0649 chipset for my DVDRRW optical rives the controller is capable of ATA 100. Device Manager shows it as PIO mode 4 & the Enable DMA box is disabled. Editing the registry manually I am able to change to DMA mode but it resets upon a reboot. |
|
|||
IDE Controler CMD 0649 PIO Mode 4 only
Firstly I must point out that I have Dual Boot and am running XP Pro on the
same PC for 2 years without any DMA issues I have six DVDRW drives in the system using 3 IDE controllers all with 80 wire ATA-133cables 4 drives should operate at Ultra DMA Mode 2 & two should operate at Ultra DMA Mode 4. They operate successfully at these settings when I boot up into XP Pro. In PIO mode 4 excessive CPU usage is noticed and the writing speed is restricted to 4x, this is as expected with PIO mode Using a Pioneer burner on the M/B IDE channel I can get the correct Ultra DMA Mode 4, but unfortunately I do not have any spare IDE on my M/B The issue is with the controller drivers supplied with the OS and not the hardware set up -- Visit my Pioneer Firmwares site http://flashman.rpc1.org Read my reviews at http://www.dvd-recordable.org |