high quality graphics on TMS 9918.

Page 3/3
1 | 2 |

By eimaster

Expert (96)

eimaster's picture

12-10-2017, 02:57

Suppose that I redefined a number of characters to use them as a background like some mountains, a lake and trees. Can I have a smoth-scrolling by bitwise rotating (left or right) with carry from the 1st character into the last one or vise versa?!

By PingPong

Prophet (2911)

PingPong's picture

12-10-2017, 08:10

Teoretically yes

By hit9918

Prophet (2667)

hit9918's picture

12-10-2017, 10:36

better dont rotate but have 8 versions ready rotated in RAM
so the whole thing goes just as plain copy

and the most capable mode also has has different colorbytes in the 8 versions
it depends on the graphics

and doublebuffering
say you use char 0 and char 1 in one frame
then use char 128 and 129 in the other frame
one can do a lot more things when one doesnt need to be ahead of the TV beam

By ARTRAG

Enlighted (5854)

ARTRAG's picture

12-10-2017, 15:04

Why not to use raster synchronized effects as in the i/o demo?

By AmiMSX

Rookie (20)

AmiMSX's picture

12-10-2017, 16:12

Overflow wrote:

You might not know: a kick-ass demo was released on TI99/4A this year.
Should be nominated for "that's not possible on that platform" award - Easter 2018.
Check https://www.youtube.com/watch?v=ZhSUhE03XFw or Pouet.

This one is pretty impressive too for such a "crippled" computer as the TI99/4A :
https://www.youtube.com/watch?v=25OyLzWOB90

By ARTRAG

Enlighted (5854)

ARTRAG's picture

12-10-2017, 19:00

The scrolling is done in screen 1 using multiple tike banks

By PingPong

Prophet (2911)

PingPong's picture

12-10-2017, 23:07

No.

By PingPong

Prophet (2911)

PingPong's picture

12-10-2017, 23:11

eimaster wrote:

And how could TMS 9918 produce such high quality and even smoth scroll both horizontally and vertically? There must be something missing in MSX machine compared to TexasInstrument machine. A hardware thing not a software maybe.
Anyway that is imazing.

tms is tms everywhere is used. And despite msx cpu is 8 bit it is faster than ti99.
Even vram write speed is higher on msx. On msx we can overrun the vdp, on ti this is not possible. This means that they write slower even on vblk

By ARTRAG

Enlighted (5854)

ARTRAG's picture

13-10-2017, 00:21

PingPong wrote:

No.

The Alex Kid on TI99/4A in the video is screen 1.
There is also an F18A version but it is not the one above.
You can see how it works here:
http://atariage.com/forums/topic/243742-alex-kidd-on-miracle...

By ARTRAG

Enlighted (5854)

ARTRAG's picture

13-10-2017, 08:38

See at page 1, the same binary supports both TMS9918A and F18A
http://atariage.com/forums/topic/243742-alex-kidd-on-miracle...

Page 3/3
1 | 2 |
My MSX profile