Re: Hardware DASD design question.

2005-06-22 Thread Bill Fairchild
In a message dated 6/22/2005 7:23:43 A.M. Central Daylight Time, [EMAIL PROTECTED] writes: Only certain drives. The S/360 DASD and the original S/370 DASD did not have skip displacement, although they did have alternate tracks. IIRC, the 3330 was the first DASD that had skip

Re: Hardware DASD design question.

2005-06-22 Thread Shmuel Metz (Seymour J.)
In [EMAIL PROTECTED], on 06/22/2005 at 08:59 AM, Bill Fairchild [EMAIL PROTECTED] said: IIRC, the 3330 was the first DASD that had skip displacements. My recollection is that the 3340, 3344 and 3350 were the first. I'll have to see whether I still have my 3330 manuals. -- Shmuel

Re: Hardware DASD design question.

2005-06-22 Thread Bill Fairchild
In a message dated 6/22/2005 1:37:35 P.M. Central Daylight Time, [EMAIL PROTECTED] writes: My recollection is that the 3340, 3344 and 3350 were the first. I'll have to see whether I still have my 3330 manuals. Could well be. I hesitated on saying 3330. I think the 3340 and 3344 had 3

Re: Hardware DASD design question.

2005-06-22 Thread Ed Finnell
In a message dated 6/22/2005 2:46:21 P.M. Central Standard Time, [EMAIL PROTECTED] writes: couple of devices/controller types, and is no longer documented. It would let you read ALL the bytes on the track, including the inter-record gaps and all these SDs, inter alia. But what you