On 28 Nov 2010 at 22:50, Phill Harvey-Smith wrote: I've got a couple of the OMTI 3127 RLL-to-SCSI converters. They basically have the OMTI RLL hard disk controller, a Z8 MCU, some EPROM, RAM and an NCR-licensed SCSI bus interface chip. Another example of SCSI-to-something else can be found in the various tape drive interfaces. Cipher used an 80188 and an NCR SCSI interface for their M990 tape streamer (the drive controller itself is a Z8002 MPU). You can see a similar pattern in scanners and the like--an MPU, some ROM, some RAM and a bus interface chip. If I were to make a SCSI hard disk substitute today, I'd probably use an ARM M3 with external RAM interface (for cache), some SRAM, an SDHC for storage and whatever I could find for a bus interface IC. On the other hand, SCSI-to-USB may be a more logical choice, given the wider range of USB devices available. --Chuck