From: richk@grebyn.com (Richard Krehbiel)
Subject: Re: IDE vs SCSI
In-Reply-To: bgrubb@dante.nmsu.edu's message of 18 Apr 1993 19:30:47 GMT
Lines: 14
Organization: Grebyn Timesharing, Inc.

In article <1qsa97INNm7b@dns1.NMSU.Edu> bgrubb@dante.nmsu.edu (GRUBB) writes:

>   richk@grebyn.com (Richard Krehbiel) writes:
>   [Stuff about the connection between IDE and IDA deleated]
>   >8MHz clock, 16 bit width, 5MB/sec.
>   If IDE speed come from IDA WHERE does the 8.3MB/s sighted for IDE
>   come from?

Well, some quick math on my part shows that an 8.3MHz bus, 16 bits
wide, performing a transfer every two clock cycles will provide 8.3M
bytes/sec.  Someone said that it really takes 3 clock cycles to
perform a transfer, so that reduces the transfer rate to 5.5MB/s,
which is the commonly-used figure for ISA bus speed.  However, I
believe a two-clock transfer is possible (0 wait states).
-- 
Richard Krehbiel                                 richk@grebyn.com
OS/2 2.0 will do for me until AmigaDOS for the 386 comes along...