Need docs for Burroughs term (Jason T)
silent700 at gmail.com
Wed Jul 11 13:15:28 CDT 2007
On 7/11/07, Alan Perry <alanp at snowmoose.com> wrote:
> It was a block mode terminal where the mainframe application would send
> down the form (a mix of text and formatting codes) in one chunk and the
> terminal would display it, then the use would fill in the fields and send
> it back to the application in a block when the user hit the transmit key.
Ah ha - that explains the "receive" and "transmit" keys. I had
suspected it at least had some sort of "batch" mode.
> The protocol used to communicate with the terminals was called Poll/Select.
> It was half duplex. The terminal processor (can't remember what those were
> called in Burroughs-speak) would go through the terminals attached to it
> and query them to see if they had anything to send and, if a terminal did,
> it would.
Yes...the MT1100 manual I have shows a sort of "daisy-chain"
configuration where the terminals connect to each other, then to the
central processor or CPU. From memory, the ports on the back of mine
are marked "COMM D," "COMM P" and "S/IO." (Again, that's from memory
as I sit here at work.)
Eh, I won't be able to attach it to anything, but I'll bring it with
me to VCFmw this weekend as an oddball piece of hardware.
Thanks for the info, Alan!
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