| Title: | Atari ST, TT, & Falcon |
| Notice: | Please read note 1.0 and its replies before posting! |
| Moderator: | FUNYET::ANDERSON |
| Created: | Mon Apr 04 1988 |
| Last Modified: | Tue May 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1433 |
| Total number of notes: | 10312 |
I have partly written a Dungeon Master type game in C on an STe and
havebeen using linea7 bitblt to copy graphic blocks to the physical
screen.
On the STe with the blitter switched on it works fine but if I
switch the blitter off the first block copy appears to continue copying
memory indefinately until memory not allocated to the screen is
overwritten and the cpu hangs.I get the same problem on an stfm with no
blitter.
I thought that the linea routine would use the blitter if available
and software if not,but the parameter settings should be the same.
I've tried recompiling the source with the blitter switched of but
it made no difference.
Any ideas.
Thanks
Brian.
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1150.1 | AIDEV::HUTCHINSON | Hutch | Wed Jul 03 1991 12:16 | 8 | |
Brian, I can't help you ref the blitter/lineA conflict but I caution you to consider the use of non-lineA routines. The current word from Atari is that LineA will not be supported in future versions of the OS. It *should* work OK now but you might run into problems in the future. Hutch | |||||
| 1150.2 | Software Blitter? | VFOVAX::PATTERSON | The world is flat, it's the universe thats round | Wed Jul 03 1991 13:35 | 4 |
Could be a bug in the Line-A routine, try using a software blitter program. Jim | |||||
| 1150.3 | HELP NEEDED ON COPY-RASTER!!! | AIDEV::MISKINIS | Mon Dec 02 1991 18:04 | 30 | |
Hello, I've been trying to get the LINEAE routine (copy raster form) to work from MWC (Mark Williams C), but can't seem to get it right... Has anyone done this from ANY higher level language? In the LINEA.H include file, there's la_blit structure, which I'm filling (correctly I think), but according to the internals book, the address of this must be placed in A6. A conflicting statement in the include file says that the LINEA routines take their arguments from global variables, and the exceptions are the BITBLT and SPRITE functions... Help! I need to be able to copy arbitrary rectangles from the screen->screen, screen->RAM, and RAM-> screen, from C!!! Actually, I even tried to create a pre and post routine like: stuff_a6(); pushes a6 on the stack, copies the address of the la_blit structure to a6 lineae(); restore_a6(); pops a6 off the stack... Has anyone managed to get this linea call to work from C??? Thanks! _John_ | |||||