The latest chipset code will support the following ::
Three Ultra33 controllers and 12 drives.
8 are UDMA supported and 4 are limited to DMA mode 2 multi-word.
The 8/4 ratio is a BIOS code limit by promise.
There is only one BIOS in the three contollers.
Jan 11 00:40:00 Orion kernel:
PDC20246: IDE controller on PCI bus 00 dev a0
PDC20246: not 100% native mode: will probe irqs later
PDC20246: ROM enabled at 0xfebd0000
PDC20246: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
ide0: BM-DMA at 0xef80-0xef87, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xef88-0xef8f, BIOS settings: hdc:pio, hdd:DMA
PDC20246: IDE controller on PCI bus 00 dev 98
PDC20246: not 100% native mode: will probe irqs later
PDC20246: ROM enabled at 0xfebc0000
PDC20246: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
ide2: BM-DMA at 0xef40-0xef47, BIOS settings: hde:DMA, hdf:pio
ide3: BM-DMA at 0xef48-0xef4f, BIOS settings: hdg:DMA, hdh:DMA
PDC20246: IDE controller on PCI bus 00 dev 90
PDC20246: not 100% native mode: will probe irqs later
PDC20246: ROM enabled at 0xfebb0000
PDC20246: (U)DMA Burst Bit DISABLED Primary PCI Mode Secondary PCI Mode.
ide4: BM-DMA at 0xef00-0xef07, BIOS settings: hdi:DMA, hdj:pio
ide5: BM-DMA at 0xef08-0xef0f, BIOS settings: hdk:DMA, hdl:DMA
PIIX3: IDE controller on PCI bus 00 dev 39
PIIX3: device not capable of full native PCI mode
Yes it can happen, what do you know 16 is in the scope if insanity....
Andre Hedrick
The (NEW) Linux IDE guy
