Help with Spectravideo SVI-727 80 column cartidge!!!

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Por mars2000you

Enlighted (6271)

Imagen del mars2000you

10-12-2013, 16:30

HD6845 is a clone of Motorola 6845, also known as 6845 CRTC or the CRTC6845 :

http://en.wikipedia.org/wiki/Motorola_6845

Here's the implementation in blueMSX :

https://sourceforge.net/p/bluemsx/code/HEAD/tree/trunk/blueM...

https://sourceforge.net/p/bluemsx/code/HEAD/tree/trunk/blueM...

Por o.geerdink

Hero (587)

Imagen del o.geerdink

10-12-2013, 19:47

It has it's own memory, I don't know if that is also main ram for z80 like in amstrad (allowing superb demogrfx see youtube)

If it works the same as on amstrad I will try to port a demo by altering the I/O ports. Who knows it might work as that cartrdige to play sega games LOL!

Any freaks around utrecht/amsterdam can ofcourse come and play with it and program as I'm already working on another MSX project myself.

Por Maggoo

Paragon (1216)

Imagen del Maggoo

10-12-2013, 20:08

Is the ROM of that cart available somewhere? It's not included in BlueMSX and I could not find it in the regular archives...

Por o.geerdink

Hero (587)

Imagen del o.geerdink

12-12-2013, 00:39

I got the rom, will try to extract it.

Por Briqunullus

Hero (531)

Imagen del Briqunullus

02-04-2022, 21:23

Does anybody have that SVI727.ROM file?

Por Briqunullus

Hero (531)

Imagen del Briqunullus

03-04-2022, 22:22

I think I have found the rom file. According to BlueMSX's rom database, the SVI-727 rom is the same as the Swedish SVI-806 rom. I have found two versions of the SVI-806 roms, one of them is Swedish. The sha1 also checks out.

Something very interesting shows up in these dumps:

Both feature the name of J. Suzuki, a programmer at ASCII who also worked on MSX-DOS!

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