My 2645A Reference Manual (yes, I still have one, knew I'd need it
someday, hasn't been opened for 15 years though) on page 2-2 states that
Absolute addressing cannot be used while Memory Lock is on. On page 2-4
it says that when Memory Lock is on, only screen relative addressing can
be used.

That's what it SAYS. Before changing any code, I would try it out by
manually typing in the Esc sequence to see if it behaves the way you
desire.

HTH

Tracy Pierce wrote:
>
> I have a program which runs online, letting the user select parameters to be
> fed to a report program, which is then run with its output pointed to disk.
> The online program then presents the report to the online user, with the
> only whistle being that the first line of the report, known to be page
> headings, is written to line 5 of display memory, then on line 6 Memory Lock
> is turned on, and the rest of the report is dumped line-by-line to the
> display.  That all works fine.
>
> But at the end of that cycle, I want to put the cursor in the locked area,
> which seems to be inaccessible, apparently because I'm using memory-relative
> cursor positioning.  When I try to do the subsequent IO sequence at line 3,
> the cursor ends up on line 6, "as close as it can get" to line 3. (and of
> course my prompt overwrites the first data line of the report).
>
> Before I go playing with my terminal-IO driver, can someone tell me off the
> top whether switching to screen-relative cursor positioning for subsequent
> IO will let me place the cursor in the area above the Memory-lock line?
>
> This is all being done with pure character-mode; the user can actually do
> the IO from anywhere on the screen, but it looks nicer if it happens in the
> expected location.  Strictly a cursor positioning problem.
>
> A simple YES answer from one of you terminal IO experts would be most
> welcome; if it's NO, some workaround would be great!
>
> TIA
>
> Tracy Pierce, Systems Programmer
> Golden Gate Bridge, Hwy & Trnsp Dist
> P.O.Box 9000, Presidio Station
> San Francisco, CA  94129-0601
> phone 415-923-2266
> email to [log in to unmask]