... if I add the extra border it shows up (which ... This draws the sprite characters in this column, making sure ... specified for the column graphics in the create functions -- ... specified in the sprite creation functions. In the call in the ... be used while drawing.

... characters have a "tail" in the lower left (using ... left and actually start drawing a few pixels to ... would be somewhat expensive (in terms of both driver ... more sophisticated driver too. In the meantime, the safest ... 2, since the window border would probably hide the ...

... the floating bus synchronization in like in the demo, the simplest ... - i.e. the border - erase stuff, draw stuff, in that order.
drawing time (this is the method used in Cobra).< ... separate game object logic from drawing routines, designate 2-3 ...

... does the IRQ start with drawing 8 empty tiles?
... of time is wasted in the head of the ... IRQ? Probably to be in sync with the beginning of ... first screen rasterline after the border - is there no other ... allow to do something useful in there?
That would ...

... of time is wasted in the head of the ... IRQ? Probably to be in sync with the beginning of ... in there?[/QUOTE]

The most useful task is drawing ... tiles during the upper border, so the ... so it simply keeps drawing empty tiles out of ...

... instead of drawing sprites, there is a function in the top border to ... the UDGs and put them in the list to be drawn ...

... to avoid this overhead in the official NIRVANA release, ... of drawing sprites, there is a function in the top border ... btiles during the top border. If anybody needs a ... btiles during the top border would be enough, and ... btiles during the top border, I will make it ...

... have also considered this idea in my reply and I agree ... of btiles during the top border, and everything else would be ... " their own drawing routine to be executed during the top border, so ...

... get printed during the top border, that the programmer can use ... ) a sprite during the bottom border then prepare the UDGs to ... at a time to the drawing list each frame.

in the top border, but synchronising with someone ...

... 't want to get caught in the screen while you cleared ... so to start drawing when raster reaches a BOTTOM border, not top ... you more time to do drawing.

Then there are ...

with HALT somewhere in between of these operations :)

... /> consumes most of processing time in normal Spectrum games. Since NIRVANA ... /> border), your game won't need to spend time with drawing, and ... row not
rendered in bicolor will save about 1 ... .[/CODE]

Keep in mind that "normal" (i.e ...

... the sprites would be drawn in an INK 8: PAPER 8 ... such in the past and assumed that you were already drawing 30x20 ... top with a nice mask border to make them stand out ... is and isn't possible in the real world. :D

... , but that should be trivial in comparison.[/QUOTE]

drawing the pixels. It responds ... long as the non-border screen area is being ... data bus with resistors in the similar way like ... data on the bus. In other words, it responds ...

... scrolls (the colours) vertically in pixel steps. The screen ... s also a synchronous border colour switch that lets ... graphics overscan into the border as bars of colour ... draw on. The buffer in the [I]River Raid ... as that is what the drawing routines support. But it ...

... my speccy was generating left border when the book says it ... should still be in the horizontal blanking period... Most ... explanation to why the left border is narrower on issue 6C ... start drawing it until slightly later (and more of the right border ...

... drawing the pixel area, allowing CPU execution only during the border ... or attribute data — conversely, in the Spectrum, each successive DRAM ... would be required in the ULA, in which space was ... suspect that early experiments in development of the Spectrum ...

... 's" if you use 8x1 drawing style.So anyway even you ... be great if multicolor area in 8x1 engenies will be centered ... can draw 16 pixels wide border around and it gives impression ...

... /> consumes most of processing time in normal Spectrum games. Since NIRVANA ... border),
your game won't need to spend time with drawing ... row not
rendered in bicolor will save about 1 ... compiling perspective.

In the demo it even has ...

... hand side. But all this border switching will severely cut back ... the number of characters in the actual printable area you ... attributes as possible during the border-drawing time, when there's no ... into registers ready to write in the next border interval.

... get all of the drawing done in just one frame, and ... of work to be done in drawing sprites by the number ... hasn't moved, just in case he overlaps an enemy ... . The ropes in [i]Jet Set Willy[/ ... might be using top-border time consistently for different ...

... problem might be using top-border time consistently for different ... handling the ropes in high res and fudging the drawing). I'd ... without worrying about attributes whilst drawing them too as I ... tends to be relatively simplistic in practice (The Solar Power ...

... problem might be using top-border time consistently for different ... same INK color, then drawing ropes directly on screen bitmaps ... no need to do anything in multicolor.

Enemies ... color clash from original game in same situations anyway.
...

... tell roughly where you are in the frame, [url=http:// ... as periods spent building the border.[/quote]
Put simply, ... of the screen and begin drawing from there, as opposed to ... better usage of top/bottom border (uncontended) time among other things ...

... display higher colour resolution or border effects properly. This affects a ... increased flicker could be seen in Green Beret on the second ... know when the screen starts drawing. Arkanoid is one such game ... which is not located in the same place in the 2068 rom ...

... display higher colour resolution or border effects properly[/quote]

in a loop and look for ... know when the screen starts drawing. Arkanoid is one such game ... easy to try some games in an emulator to see what ...

... keyboard to the appropriate ports in the emulated speccy, it ... second part (the famous multicolour border+paper effect) fails miserabiliy ... [/b]: the initial logo drawing takes a lot of time ... [b]Shock Megademo[/b]: (tried in 48K mode). Everything fine except ...