Bitmap multicolor mode of TMS

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بواسطة PingPong

Prophet (3756)

صورة PingPong

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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بواسطة PingPong

Prophet (3756)

صورة PingPong

19-07-2021, 15:00

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

بواسطة Manuel

Ascended (18088)

صورة Manuel

19-07-2021, 17:45

Which VDP were you emulating?

بواسطة PingPong

Prophet (3756)

صورة PingPong

19-07-2021, 19:21

Manuel wrote:

Which VDP were you emulating?

V9938. Are those modes supported?

بواسطة PingPong

Prophet (3756)

صورة PingPong

20-07-2021, 09:11

v9938

بواسطة Metalion

Paragon (1430)

صورة Metalion

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.

بواسطة gdx

Enlighted (4634)

صورة gdx

20-07-2021, 11:25

Can you put a link to you program test?

بواسطة PingPong

Prophet (3756)

صورة PingPong

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

بواسطة PingPong

Prophet (3756)

صورة PingPong

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)

بواسطة PingPong

Prophet (3756)

صورة PingPong

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 ?

بواسطة gdx

Enlighted (4634)

صورة gdx

21-07-2021, 10:26

I tested on the National CF-2700 MSX1 only.

OpenMSX:

Real Machine:

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