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공지사항

'2017/06'에 해당되는 글 7건

  1. 2017.06.06 APMSX supports 256KB games(Konami 8K ROM mapper)
  2. 2017.06.04 APMSX card being upgraded
  3. 2017.06.02 Hyperion 512K + card

I've upgraded the Konami 8K Mapper and now can run upto 256KB from 128KB.




It runs but, there is a issue .. Some sprites shaking and flashing.

When I decreased the speed to 2Mhz, it doesn't show same problem.

So, It must have problem on VDP control. maybe RAM accessing timing could be a issue.

I will check later when I need to debug the board.


ROM Mapper support would be finished with this Konami 8K mapper only.

256KB game running is good one. No MSX could run 256KB game without real ROM cartridge.

So, It would be OK for me.

Hope to like it too.


Thanks;

Ian Kim





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Posted by 이안김

Previous APMSX card is enough to run basic of MSX function 

but, I want some more enhanced function in it.

Now, I have new board.



What is different.

Used 144 pin CPLD as main controller.

I have more 32 IO pins now it is good enough.


I'm tring to add Konami 8K mapper and now it is working as below.

Now just support 128KB but, will extend it up to 256KB.


APMSX board have own 512KB SRAM and it support virtual slot for ROM cartridge emulation.

So I can load ROM file and can run without physical ROM cartridge. (Anyway, APMSX will have a external physical SLOT. so user still can use own cartridge)

And it accepted just 32KB ROM data but, now I can load 128KB ROM data and made it run properly.

The mapper is very different method unlike accessing APPLE II AUX memory .



I'm still having some more idea with APMSX but, I think, I should not expand too much on this board.

And It will support 256KB Konam 8K Mapper and little more? maybe.. then will be closed.


I will check the signal for External SLOT.

I've prepared for this but, have to test. 


Let's see the next what will happy with our APPLE II.
Thank you.

Ian Kim




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Posted by 이안김

Hi friends,

Now the Hyperion 512K+ card is on sale.

I have around 5 sets for users but if I have more orders, I will make more cards.

Please search my card on eBay.



User's Manual

Hyperion 512K RAM+ users manual.pdf


Thank you very much;

Ian Kim


* Newer version available now.


If you have any question or opinion, please let me know.

Thanks

Ian Kim

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