On Thu, Dec 09, 1999 at 04:50:31PM -0600, [EMAIL PROTECTED] wrote:
> Not everybody follows the tn3270e list... But due to recent problems
> with an unknown order of 0x0D which is mentioned in this document, I thought
> I'd forward this over to this list. (Hope nobody else does it too :-)
I should probably start following it.
>
> Bill Suetholz
>
> -----FW: <[EMAIL PROTECTED]>-----
>
> Date: Thu, 9 Dec 1999 09:37:45 -0800
> Sender: [EMAIL PROTECTED]
> From: Barry Hansen <[EMAIL PROTECTED]>
> To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> Subject: Re: 5250 Data Stream Operation Codes
>
> I wish to point out the opcode list in that document is sadly incomplete and
> out of date. You will want to consider handling a more complete set, like
> this:
>
> x00 No operation
> x01 Invite op
> x02 Put
> x03 Put-then-Get
> x04 Save screen
> x05 Restore screen
> x06 Read immediate
> x07 Read mod immediate alt
> x08 Read screen
> x09 Internally generated Put (not used in DSPT)
> x0A Cancel invite
> x0B Turn on MSG light
> x0C Turn off MSG light
> x0D Read screen with extd attributes
> x0E Read screen to print
> x0F Read screen to print extd attributes
> x10 Read screen to print with gridline
> x11 Read screen to print with gridline with extd attributes
>
> Sorry but I don't know of any documentation on op codes. As far as I know,
> none exists. I hope someone can prove me wrong.
Actually, there are opcodes, commands, and orders. We were having a problem
with orders (which are part of the Write To Display command, which are done
with the Put opcode). The distinction has thrown me a few times as well - I
personally see no reason to have both opcodes and commands; using one or the
other would have been perfectly adequate. I think the real reason behind
opcodes was that the SNA transport is more complex than TCP/IP, and contains
more information which is used for scheduling packets and other such nonsense.
But don't quote me on that, I just blew up a Twinax installation :)
>
> Good luck, Barry Hansen
> [EMAIL PROTECTED]
> WRQ Inc., makers of Reflection, Express and Apptrieve
>
> > Any suggestions ?
> > Thanks, Geoffrey A. Brown.
>
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