For uncompressed object desks, location 56 in the next card contained the
next
"loading" instruction if a remember correctly.

With no recollection of an "I" opcode for read, I searched and found
http://1401.org/op-codes/.
You were probably thinking of the clear storage and branch (i.e. /056).

My set and clear wordmark opcodes were either wrong or reverse.

Don


-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED]]On Behalf Of
Phil Payne
Sent: Tuesday, January 29, 2002 8:22 AM
To: [EMAIL PROTECTED]
Subject: Re: IBM announces LINUX-only 1 to 4 engine zSeries


>         1 read from card readers

ISTR 'I' was read a card.  Operand A (if present) was the branch
location - boot decks were a succession of 'I056' commands - the boot
deck itself was executed to move its own contents into storage and set
word marks.

On a more relevant topic, the formal Announcement Letter for the
zSeries Linux offering is available:

http://isource.ibm.com/cgi-bin/goto?it=usa_annred&on=102-030

--
  Phil Payne
  The Devil's IT Dictionary - last updated 2002/01/20:
http://www.isham-research.com/dd.html
  UK +44 7785 302803
  Germany +49 173 6242039

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