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- Newsgroups: comp.lang.pascal
- Path: sparky!uunet!mcsun!sun4nl!fwi.uva.nl!gene.fwi.uva.nl!wijkstra
- From: wijkstra@fwi.uva.nl (Marcel Wijkstra (AIO))
- Subject: Turbo (5.5) and 8514 HELP WANTED
- Message-ID: <1993Jan5.134005.18504@fwi.uva.nl>
- Sender: news@fwi.uva.nl
- Nntp-Posting-Host: larry.fwi.uva.nl
- Organization: FWI, University of Amsterdam
- Date: Tue, 5 Jan 1993 13:40:05 GMT
- Lines: 36
-
- Hi,
-
- For some computer graphics course, we use a room full of PS/2s with
- 8514/a graphics adapters and Turbo Pascal 5.5 . My supervisor wrote
- a neat interface to the Graph unit, that can be used in 8514 mode
- and VGA mode. We prefer the 8514 version (since it has some additional
- features, like being able to use 256 colours), but that has one
- major drawback:
-
- When an error occurs while in 8514 mode, the PS/2 does not switch back
- to the (VGA) text screen, as it does in VGA mode.
- The same problem occurs when 'Step'ping (F8) through a program: in VGA
- mode, the Turbo programming environment is visible after each step. But
- in 8514 mode, the graphics screen remains visible.
-
- So, somehow, the control remains with the 8514 instead of switching back
- to VGA when it is supposed to. The rest is okay; the keyboard is not
- dead (program execution can be resumed normally by typing blind) and
- after the program has ended (in a regular way), the text screen DOES
- reappear.
-
- Can this problem be solved? Or do we just have to live with it (or not
- use the 8514 mode)?
-
- Thanks in advance,
- Marcel.
-
- P.S. I know I have not been very specific about HOW the 8514 is being
- programmed, but that's because I do not have access to the source code
- (at least, not at the moment). But if you need more info, I can get hold
- of it.
- --
- X Marcel Wijkstra AIO (wijkstra@fwi.uva.nl)
- |X| Faculty of Mathematics and Computer Science
- X University of Amsterdam The Netherlands
- ======Life stinks. Fortunately, I've got a cold.========
-