Bitmap multicolor mode of TMS

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By PingPong

Prophet (3756)

PingPong의 아바타

19-07-2021, 13:17

Hi, from what we known as Bitmap Multicolor Mode here:
http://www.unige.ch/medecine/nouspikel/ti99/tms9918a.htm
i could not see the difference with the regular multicolor mode .

Is this mode supported on openMSX?

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By PingPong

Prophet (3756)

PingPong의 아바타

19-07-2021, 15:00

I've tryed in openMSX and i get a full white area , except the border

By Manuel

Ascended (18093)

Manuel의 아바타

19-07-2021, 17:45

Which VDP were you emulating?

By PingPong

Prophet (3756)

PingPong의 아바타

19-07-2021, 19:21

Manuel wrote:

Which VDP were you emulating?

V9938. Are those modes supported?

By PingPong

Prophet (3756)

PingPong의 아바타

20-07-2021, 09:11

v9938

By Metalion

Paragon (1434)

Metalion의 아바타

20-07-2021, 11:03

PingPong wrote:

Hi, from what we known as Bitmap Multicolor Mode here:
http://www.unige.ch/medecine/nouspikel/ti99/tms9918a.htm
i could not see the difference with the regular multicolor mode .

Is this mode supported on openMSX?

It's not a new mode, it's just the regular tile mode where all the 3 banks are filled with tiles in their numerical order.
. bank 1 filled with tiles 0-255
. bank 2 filled with tiles 0-255
. bank 3 filled with tiles 0-255
And of course, the same is done on the color banks.

This allows to draw everything you want, everywhere on the screen.
Hence the use of the "bitmap" name.

By gdx

Enlighted (4642)

gdx의 아바타

20-07-2021, 11:25

Can you put a link to you program test?

By PingPong

Prophet (3756)

PingPong의 아바타

20-07-2021, 15:43

gdx wrote:

Can you put a link to you program test?

Quote:

10 SCREEN 2
20 COLOR 1,2,14:CLS
30 LINE (0,0)-(100,100),1
40 VDP(1)=VDP(1)OR8
50 T$=INPUT$(1)

i know it is not a new mode. there can be only 8 different mode combinations on TMS vdp, and we already seen every possible configuration.
Just asking why i could not get a bitmap mode of 40x24 in three sections like some docs say on internet.
In this mode i should also have sprite sub system enabled

By PingPong

Prophet (3756)

PingPong의 아바타

20-07-2021, 15:45

Metalion wrote:

And of course, the same is done on the color banks.

no color banks here, no color at all. the doc i've found on internet say that there is no attribute table, colors work like in text mode, from vdp(7)

By PingPong

Prophet (3756)

PingPong의 아바타

21-07-2021, 09:09

Quote:

10 SCREEN 2
20 COLOR 1,2,14:CLS
30 LINE (0,0)-(100,100),1
40 VDP(1)=VDP(1)OR8
50 T$=INPUT$(1)

here is the source.
Can you type on a regular msx1 ?

By gdx

Enlighted (4642)

gdx의 아바타

21-07-2021, 10:26

I tested on the National CF-2700 MSX1 only.

OpenMSX:

Real Machine:

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