John > 3274
3271 > STUPID >From the perspective of the new millennium. At the time (1970 approximately) >I'm sure it was a sensible design choice. Chris Mason On Thu, 10 Nov 2011 11:48:30 -0600, McKown, John <john.mck...@healthmarkets.com> wrote: > ... > >Remember how old the 3270 architecture is. Wikipedia says about 1972. Think 1 >Mhz 8080 as "top of the line" micro processor. The original 3277 and its >controllers were STUPID. Rather than put a more powerful processor in the >controller, IBM decided to offload the "complicated" function of calculating >the position of the data into the host. Made of discrete transistors and >resistors! Very primitive. So, the host just sent a simple to understand >"buffer address" (a single number) to the 3274. It basically just starting >stuffing data characters at that location in a RAM buffer. More power == most >cost == fewer purchases. Much like some of the "krud" in z/OS today due to >"short sighted" architects who were worried about memory and slow CPUs and >expensive DASD. > >The answer to these problems is obvious: Convert from archaic z/OS to modern >Windows 8! At least that's what a lot of "Windows weenies" around here are >saying. Over and over and over and over. "Better! Faster!! Cheaper!!!" is >their cry. Anything z/OS can do, they state can be done using Windows and at >lower TCO. Herr Gobbles would be proud of them. > >-- >John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
