On 12/26/2011 4:49 PM, John McKown wrote:
Seeing a how BTAM is no longer available (can't order it), how do you use UNIT=device? Oh, EXCP? Burr! That is definitely not for a beginner.
The main problem with EXCP mode for 3270s is the need for authorization to handle attention notification (although I know at least one program that does polling!).
Also, since I'd be surprised if there are many non-SNA 3270 displays still in active use, it becomes even more difficult. Most users of 3720 today use TN3270. Which requires VTAM as best as I can tell.
While VTAM is convenient and ubiquitous in zOS shops, if IBM still supports the 3791L (really a 3174-1L), then true local non-SNA support is readily available, and EXCP is (non-noticeably?) faster than VTAM. TN3270(E) software has the drawback that it needs to run on PCs that in turn are a lot easier to compromise than "dumb" terminals. Gerhard Postpischil Bradford, VT
