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공지사항

Added some photos. 

Of course it has sound too.

Hope you like it. :)




































I'm waiting for updated PCB.

New board included for TMS9918 , Sound chip and Joypad port.

So, I can play games. 


As you know, this is not emulator. 

It is real VDP board with sound chip.


Also It works under the CP/M 80.

So, You can even make a game under the CP/M.

I want make some game with this option board.


Thanks;

Ian Kim


Posted by 이안김

I have hard time to make it work as the COLECOIVISON game console.

After several tries with hard learning of structure.

I could run it but, some game only.I don't know the reason why it can't play the other ROM.


First, It shows start screen by ROM BIOS.


And tested with ROM data. 

I can find upte 32KB sized ROM data but, This board ccould support up to 24KB not 32KB due to APPLE II structure.

This board also works with the privous SG-1000 joypad but not the same. Anyway internally will change this convertion to play properly.




I remember this game. 

It is very old game.. maybe when I was 11 years old, I did play it but, not good player .

In that time I didn't know what does carnival means.


It looks he is using his invented wheel. :)

It's CongoBongo..


Time pilot.. It is some similar as the arcade game..Anyway It's fun to me.


Oh my poor frog..

Maybe from that time, we have to consider to build alternate ways to avoid  the road kill.




And I'm trying to run other games but, still no idea what is the problem.

It looks memory fault or NMI fail. Anyway there is no ROM.. it means, it could be overwriten by code..

It having some hard to understand the structure of COLECOVISION...


Anyway, This VDP board isn't purpose for GAME emulator.

I'm want to show what this VDP board could do. but, It is a board for GAME play too.

Please don't forget it is a daughter board of the CP/M card. :)

And enjoy some game when you are tired while you are making your own program.


Thanks

Ian Kim

Posted by 이안김

Here is the VDP Daughter for CP/M Turbo7 card.

It can be installed as the below.






After some of address decoding and some signal processing..

It is working as the SG3000 and run some game as under.







Andthen there is some techinical issue.

CP/M tubo7 looks not handle IORQ properly. so, I've updated CP/M turbo7 and added the signal on the CPLD spare pin.

After start run, it looks not stable. 

I'm checking where is the problem came from, CPU, or signal or TTL?

I'm working on it.

Keep watching.. :)



** Solved stability issue.

I fixed it and works stable now.

It keep running more two 24 hours.


I'm considering to put a Sound chip same as SG3000 and Joyport pins..

Then board buyer could play games as the SG3000.

Maybe it would make it more fun..


** Just added Sound chip.



https://youtu.be/krZJV-vf4No


https://youtu.be/IR01BK_a9O4



** Added another interesting picture.


But, don't expect too much.

It doesn't means that I made MSX computer..

The board have different structure unlike MSX and I can't run ROM of MSX.

But, you can make your own coded to make it run on MSX computer and this board too.

This is the maximum ability of this board.


If you want MSX board, please wait some more weeks to complete the board.


Thanks;

Ian Kim


** I've tested another games of SG-3000 and all works.

Some of game may not work properly. 

Please aware it.

Thank you!

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Posted by 이안김

This is PCB for the MSX board on APPLE IIe.

Still a lots of work behind due to changed wiring. 




Thanks

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Posted by 이안김

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