>Anyway, I've got me a PCI based Maxtor ATA133 RAID card here, with the 
>chip labelled Promise PDC20269, ATA133 V2.20 B10.  That is the only chip 
>on there, so its not like it has a ROM I can remove to reprogram or have 
>it done.  Are there drivers for this chip available for any flavor of 
>Mac OS?

The PDC20269M chip is the one which supports the Mac.

In order to prevent "diversion" to Mac use, the non-M chip (PDC20269) has 
an internal FLASH memory which is intentionally one-half the size 
required to accommodate the Mac firmware.

(Perhaps OS X can fake the required support, just as it faked the Slave 
support on Rev. 1 Beiges).


>I've got several IDE drives lying around, one is a ten gig and 
>one is a 13 gig, together they total almost what the SCSI drives, all 
>six of them, have in capacity.

My solution for large capacity at low cost per GB is to use an ACARD 
SCSI-IDE "bridge".

The latest firmware includes 48-bit LBA, for support of ANY size UATA 
drive, although the cards are limited to one device (drive) per card, and 
40 MB/sec throughput per card. (The LVD/SE versions are faster, of 
course).

I use lots of UW versions of this product on 160 GB to 250 GB hard drives 
on my Macs, and a version is also available which has an N-SCSI 
connector, which would be perfect for a PowerTower Pro and its 
on-motherboard F-SCSI bus.

(There is also a version of this card which can convert EIDE CD- or 
DVD-ROM-R-R/W units to SCSI, and Toast appears to support these converted 
devices as fully as it does a real SCSI device. I have had no problem 
playing DVDs, nor burning CDs, but I haven't tried to burn a DVD yet).

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