Graphic modes

Página 2/20
1 | | 3 | 4 | 5 | 6 | 7

Por Sonic_aka_T

Enlighted (4130)

Imagen del Sonic_aka_T

30-10-2005, 19:37

check the site...

Por Trebmint

Champion (294)

Imagen del Trebmint

30-10-2005, 20:21

Yes its a full Windows-like GUI OS. Also its very sturdy, almost bug free, and will very soon be available to CPC developers as the beta will be released within two weeks.

I can see no reason why this won't work on MSX2, and hopefully all the apps that have by that time been written for the amstrad machine will then work on the msx.

Por wolf_

Ambassador_ (9892)

Imagen del wolf_

30-10-2005, 20:33

Does the Amstrad have a fast videochip? The MSX doesn't, if you count with fast graphics .. well that might be the stinker of this story .. Tongue

Por Yukio

Paragon (1540)

Imagen del Yukio

30-10-2005, 20:34

Appear to be interesting.
I think that more classic systems would be nice!

Por Trebmint

Champion (294)

Imagen del Trebmint

30-10-2005, 20:54

I think the Video systems of the MSX and CPC seem to be very different. Asking if the Amstrad has a fast videochip is not really a valid question as the Videochip just displays a 16k section of the primary 64k, meaning no specialist VRAM or sprites like the MSX. Consequently the Video Ram is accessed in the same way as the normal ram.

To copy bytes to the screen is as simple as doing an LDI, or LD (hl),a. Whether you consider that fast or slow is a matter of opinion, but I'd say slow. You tell me? I'd love to know. Admittedly only having 16k to shift would be less than 64k of mode 6.

Por Sonic_aka_T

Enlighted (4130)

Imagen del Sonic_aka_T

30-10-2005, 21:05

Well, the bottleneck on the MSX system is really moving data from the Main RAM to the Video RAM. This has to be done by the CPU, which of course is very time consuming. Once data is actually in the Video RAM though, things aren't half that bad. The V9938 has a blitter, which can do a number of simple tasks, such as doing logical copies, highspeed moves, fills, lines and whatnot. Sure, we all wish the darn thing were faster, but considering the time and age these beasts are from...

Anyhow, mode 6 is indeed a little 'heavier' than mode 5 would be, but unlike wolf suggests, it's very possible to make a GUI in mode 6 as well. That, of course, doesn't change the fact that however fast you get your routines to work in mode 6, they'd still be twice as fast in mode 5. All in all though, the ability to draw filled rectangles, lines and copy text-data using VDP commands must make rendering the screen a bit easier than it is on the CPC. How fast it will turn out is just a matter of trying it, but the fact that other mode 5 GUIs were reasonably fast means it's certainly possible.

Por W76NearDark

Paladin (684)

Imagen del W76NearDark

30-10-2005, 21:11

Wouldn't the GFX9K be a consideration worth as well?

Por Sonic_aka_T

Enlighted (4130)

Imagen del Sonic_aka_T

30-10-2005, 21:13

nah, there's no challenge in that! Tongue

Por W76NearDark

Paladin (684)

Imagen del W76NearDark

30-10-2005, 21:23

I think it would be nice that such an OS would work on a standard MSX2, but I also think it would be nice to take the benefits from additional hardware expansions, like in a bonus feature.

Por Maggoo

Paragon (1214)

Imagen del Maggoo

30-10-2005, 21:40

Just use drivers for your OS. A V9938 driver and a V9990 driver Smile

Página 2/20
1 | | 3 | 4 | 5 | 6 | 7