Wtd: ESDI 3.5" hd + hd ?'s

From: SUPRDAVE <SUPRDAVE_at_aol.com>
Date: Mon Jan 5 20:50:28 1998

Didnt ESDI come out when the IBM PS/2 announced?


In a message dated 98-01-05 21:31:57 EST, you write:

<<
> MFM (early 80's?)
 
 Very early 80's, I think, for the ST-506.
 
> RLL (late 80's?)
 
 I tend to think of this as a minor variation of MFM, myself :-)
 
> SCSI (late 70's?)
 
 The first official-type "SCSI specification" was proposed by an
 ANSI committee in 1984. It was almost backwards-compatible with SASI
 (Shugart Associates System|Storage Interface) which had been kicking
 around since 1978 or 1979.
 
> ESDI (?)
 
 Mid-80's
 
> IDE
 
 aka "ATA", clostely related to the announcement of the IBM AT... which would
 put it around 1985 or shortly afterwards? This wasn't really a new standard;
 the IDE bus interface looks exactly like a WD1002 hooked up to a MFM drive!
 
> any others?
 
 The SA4000 and SA1000 interfaces date from the late 70's.
 
 And let's not forget the granddaddy of them all, SMD! (CDC, 1975 or so?)
 And SMD's immediate descendant, the MASSBUS...
 
 Tim. (shoppa_at_triumf.ca)
>>
Received on Mon Jan 05 1998 - 20:50:28 GMT