Are we sure that VG-8235 is not upgradable to 2plus? | MSX Resource Center (Страница 2/6)

By NYYRIKKI

Enlighted (6067)

23-05-2014, 19:51

By default it boots in 60Hz, but it will boot in 50Hz mode if you keep "H"-key pressed during boot.

By l_oliveira

Hero (534)

23-05-2014, 19:53

NYYRIKKI wrote:

By default it boots in 60Hz, but it will boot in 50Hz mode if you keep "H"-key pressed during boot.

Most awesome ! So I see now why you had to get rid of M and S from the logo

By NYYRIKKI

Enlighted (6067)

23-05-2014, 20:07

No, the logo is originally in KANJI-ROM and it takes about 1.5KB. I ended up with same problem as original developers: I simply could not squeeze it to EXTROM where it actually should be... So I wrote a new logo that takes only about 10% of the space. It does not have cute animation or similar, but it fits in... Actually I used every single free byte :-)

Here is example of the ROM used in real life.

I also modified other ROMs so that I can emulate F4-port, the computer boots faster than original and I can use it to crack games by skipping module boot etc. (See the description of the video) The computer on the video is originally MSX1 so I also needed to emulate RTC, but that is another story...

By giuseve

Paladin (787)

23-05-2014, 22:37

@nyyrikki

i have this big problem with the new NMS8245 upgraded to Plus
http://www.msx.org/forum/msx-talk/hardware/msx2-and-msx2-vid...
I saw your video and the trick of H-key. I could make the same on my MSX? When you start in 50Hz mode, it still remain in that mode also when you run a demo or a software that may tray to change the frequency???

Please, I need help !!!

By NYYRIKKI

Enlighted (6067)

23-05-2014, 22:56

giuseve wrote:

I saw your video and the trick of H-key. I could make the same on my MSX?

Yes you can.

Quote:

When you start in 50Hz mode, it still remain in that mode also when you run a demo or a software that may tray to change the frequency???

No, software can always override any setting BIOS does. This just changes the defaults... Practically same as if you would try to run your program on European MSX or Japanese MSX.

By l_oliveira

Hero (534)

23-05-2014, 23:00

giuseve wrote:

@nyyrikki

i have this big problem with the new NMS8245 upgraded to Plus
http://www.msx.org/forum/msx-talk/hardware/msx2-and-msx2-vid...
I saw your video and the trick of H-key. I could make the same on my MSX? When you start in 50Hz mode, it still remain in that mode also when you run a demo or a software that may tray to change the frequency???

Please, I need help !!!

Use a RGB monitor which don't care about vertical frequency. Most Euro software will run in 50hz but some will switch to 60hz most all Japanese games make an assumption that they're running in a NTSC computer.

Even more because there's no official PAL MSX2+ released.

By giuseve

Paladin (787)

23-05-2014, 23:02

I've tried to use VIRTUALDUB to test the video output. I used Capture section of VirtualDub , then I switch to HISTOGRAM section. It seems that there are some interferences in many part of the hystogram. Maybe my V9958 is not working properly? Maybe this could be the reason why my 8245MODIFIED doesn't talk correctly to the LCD TV??

The problem is that also the VG-8235 had some problems, but with screen,,,,,1 i resolved it.
But now it doesn't work !!
I need a solution

By NYYRIKKI

Enlighted (6067)

24-05-2014, 07:46

I would say your problem is the LCD TV... It is like trying to connect Cessna engine to jet fighter (cause is consumes less petrol) and then complaining that it doesn't fly too well.

No hard feelings, but I suggest that you take your LCD and go to nearest recycling center. With some luck they will take your TV for free and you may even find a proper CRT-display from there.

By giuseve

Paladin (787)

24-05-2014, 10:37

@ nyyrikki
Uhm, i don't think my wife would agree with you :-)
Anyway, I used a ~~better~~ VERY BEST AND EXPENSIVE scart cable finding a partial solution.
Please, read this: http://www.msx.org/forum/msx-talk/hardware/msx2-and-msx2-vid...

By yzi

Champion (444)

24-05-2014, 11:14

Look at what you can buy for 40 eur, KOSTENLOSER VERSAND, meaning free shipping, rediculously low price.
http://www.ebay.de/itm/Bosch-LTC2915-91-color-monitor-15-scr...
I have two of those. The only downside is, no RGB input, only composite and S-video.

I'm sure your wife will understand that you want to do this MSX thing properly. :) You just have to have a CRT monitor, otherwise it's a spoiled fake experience. The 15-incher isn't that big really.