CompuServe Messages

Continued.. Now, about parts count and the 2090. No, I don't consider a higher parts count an advantage. It is definitely true that doing a given job with a lower parts count is a goal to be desired. What you are doing, though, is mistaking what 'the job' is. The 2090 and the C Ltd host adapter, to name only two, do not perform the same job. True, they both help move data from a hard drive into memory, and vice versa, but that's where the comparison ends. You can communicate with someone across the country by walking there, by telephone, or by radio, though you wouldn't say you were really 'doing the same job', even though the communication is still acheived. Remember, the 2090 handles DMA, a direct (native) ST506 interface, and because of that, does considerable more than the C Ltd controller does. The C Ltd, and others like it, depend heavily on a single, specialized chip, and the software to handle it. If you doubt the amount of logic required to perform DMA or to implement a native ST506 interface, I'm sure you canfind other opinions than mine. -larry