two screen vertical on video con scroll oriz ?

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By DanySoft

Champion (435)

DanySoft's picture

04-05-2011, 22:08

Hello, I made two different screen:
top screen is the vertical scroll
bottom screen is the screen latch Smile

But how do I scroll horizontally between two separate screen
vertically?
+--------+----------+
| 1 scr | scr 2 | <= screen between two separate screen
+--------+----------+ but I can not to work ....

I used three VDP:
VDP-25, and VDP-26-27 <= hardware scroll
VDP-19 <= to set line before disable Interrupt.

Now how do I work two screen video on ?????Question

Note: This two-screen on screen 5 or 7 are useful for horizontal scrolling while the other screen to the right, you need the points and lives. Wink

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By Sonic_aka_T

Enlighted (4130)

Sonic_aka_T's picture

04-05-2011, 22:17

While this is possible, it's very CPU intensive and very timing sensitive. I really wouldn't recommend trying this, as you're looking at maybe 80% CPU load just for the screen-split alone (it depends on the height). Essentially you'll need to tie up the CPU with 'do nothing' loops and VDP outs for the entire vertical 'duration' of your screen-split. It will also mean using instruction timings to 'accurately' time your split, which means any 'non-standard' CPU will mess things up, plus you'll need to write separate routines for 50Hz & 60Hz. Also, you may get artifact-ing while doing the actual split depending on how you plan things, and may get minor horizontal shifts if everything doesn't pan out just as you planned. I'd really recommend not using hardware scroll and using some other method to create your 'border' instead...

By DanySoft

Champion (435)

DanySoft's picture

04-05-2011, 22:27

Mah! With 50hz / 60hz worked two horizontal scrolling screen, but vertical was tested on msx Turbo R ? Question

By DanySoft

Champion (435)

DanySoft's picture

04-05-2011, 22:50

Then, we can use two screens (page1 and page2) on screen and scroll horizontal but down split-screen, are display the points and the lives .... Smile

It 's very big this two screen page 1 and page 2!!Shocked!

By Edwin

Paragon (1182)

Edwin's picture

07-05-2011, 14:21

After reading the question twice, I still don't understand what it is. If you want a more helpful answer, please be a little clearer in what you want to know. Especially if you use a machine translation (common for Italian users) because those do make technical stuff undecipherable.

By DanySoft

Champion (435)

DanySoft's picture

07-05-2011, 15:20

I used Google translator from English into Italian.
okay?
Which site is more suitable for translation? Question

By Edwin

Paragon (1182)

Edwin's picture

07-05-2011, 17:07

No translation sites are good at it. The best thing you can do is to give a better description of the effect you're trying to achieve. Maybe an example if you can find one.

By wolf_

Ambassador_ (9826)

wolf_'s picture

07-05-2011, 23:39

Or ask the question in Italian and let ARTRAG come to the rescue .. Tongue

By ARTRAG

Enlighted (6453)

ARTRAG's picture

08-05-2011, 01:07

My guess: 99% of probability, independently by the language, the matter has no answer...

By Daemos

Paragon (1713)

Daemos's picture

08-05-2011, 12:19

Perhaps. He is just simply trying to achieve the sonic effect. Maybe he likes to build a horizontal scrolling platform game that also can go up and down but tries to divide the level over two pages of VRAM. He likes to have a score bar etc on the right side of the screen (like roadfighter). Did I guess right Dannysoft?

By flyguille

Prophet (3028)

flyguille's picture

08-05-2011, 16:50

I thinks he want a game for two players, left one player, right the other.

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