CD uses PIO when it supports DMA

  • Thread starter Thread starter guitarfxr
  • Start date Start date
G

guitarfxr

I have a Teac CD-W28E, a CD-RW which supports MW DMA MODE
2, however, W2K only sets this device at PIO.

This is strange because the Hard Drive on the same
controller is set to DMA.

Any thoughts, I'm running W2K, SP3.

Thanks.

Doug
 
Edit registry:
HKLM\System\CCS\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}

0000 - IDE controller itself - reg_dword "EnableUDMA66", value 1.
0001 - primary channel,
0002 - secondary channel.

Both channels, dwords:
MasterDeviceTimingModeAllowed 0xFFFFFFFF
SlaveDeviceTimingModeAllowed 0xFFFFFFFF
UserMasterDeviceTimingModeAllowed 0xFFFFFFFF
UserSlaveDeviceTimingModeAllowed 0xFFFFFFFF
and
MasterDeviceTimingMode 0xFFFF or 0xFFFFF
SlaveDeviceTimingMode 0xFFFF or 0xFFFFF
or
for Multi-Word DMA Mode 2 and PIO4 (burners, very old HDDs...) - 0x0410
for Ultra ATA33 (CDROMs, DVDs, old HDDs...) - 0x2010
for Ultra ATA66 (just HDDs) - 0x8010
for Ultra ATA100 (modern HDDs) - 0x10010
for Ultra ATA133 (ultramodern HDDs) - 0x12010
 
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