Years ago I was getting help from Greg Price (who seemed to know more
about 3270 protocol than anybody on the planet) to implement PSS which I
called GDDM graphics. I don't know anything about APA.
Let's see if I have the definitions correct:
PSS = Programmed Symbol Set, the host creates little bitmaps the same
size as each character cell, and sends them to the terminal. Once they
all arrive, the host then sends characters that point to each one of
those new symbols as needed to "draw" lines and arcs and whatever on the
screen. I remember seeing real 3279's go crazy with "static" for a few
seconds prior to displaying a graphic screen, and I bet that was during
the process of loading the programmed symbols.
APA = All Points Available (or Addressable), which would allow any dot
on the screen to be set by the host. I assume that means I could send
special codes to the screen to say, draw a (real) line or arc, or maybe
just send an entire block of bits to the screen. And I think I read
this function was never available on any real IBM hardware, only on
emulators.
Seymour J Metz wrote:
What is "GDDM graphics", APA or PSS?
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@listserv.ua.edu> on behalf of Tom
Brennan <t...@tombrennansoftware.com>
Sent: Sunday, November 26, 2017 12:39 PM
To: IBM-MAIN@listserv.ua.edu
Subject: Re: Shocking Bug in Latest PCOMM Release
Hi Robert, you're right... and many of those errors were because I wrote
Vista initially for Windows 3.1, without using some of the built-in
functions for dialog windows. I used more of my own code because I
wanted things to look more like Win 95 while still running 3.1. That
was fine at the time, but of course Windows advanced and my dialogs were
left in the dust. So I need to work on that.
And a minute ago I said I thought GDDM graphics are unused. Well, I
said the same thing about IND$FILE back in 1998, thinking it would be
totally replaced by FTP. I was certainly wrong about that! Today I
think people use IND$FILE more than ever for smaller file transfers.
And there are folks like you without FTP available - I know how that is,
logging on to a customer's mainframe and needing to upload something
like SHOWMVS.
Robert Prins wrote:
On 2017-11-22 11:24, David Cole wrote:
I simply don't understand why anyone would still be putting up with
PCOMM.
Tom Brennan Vista remains both well and fully supported.
It is, was, and will always be the best.
It probably is the best, but it also has, at least for me, a few
annoying "features":
- the ind$file dialog cannot be resized (I cannot use FTP)
- the File transfer settings menu lacks a pull-down with all options
- it's not possible to keep macros in multiple directories
- accidentally recording a macro (while trying to play it) doesn't warn
you that the current macro will be overwritten
Robert
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