One chip MSX improvement project

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Van AxelStone

Prophet (3189)

afbeelding van AxelStone

10-11-2022, 09:25

@HRA! thanks to you for your work. Bug confirmed, I played yesterday the game and it has a weird effect with the clouds.

Van HRA!

Champion (289)

afbeelding van HRA!

13-11-2022, 05:23

AxelStone wrote:

@HRA! thanks to you for your work. Bug confirmed, I played yesterday the game and it has a weird effect with the clouds.

A modified firmware version has not yet been released.
Under what conditions have you tried it?

Van mpsantos7

Supporter (7)

afbeelding van mpsantos7

15-11-2022, 14:38

Hello.

I made it with partial success.
I edited the character table in your rom to run some programs in Portuguese and it worked well.
I added a customized mega assembler rom (I'm addicted to it), It worked, however it breakup megasd disk operation.
It appears that ocm--bios.dat with less than 512kb works fine.
I assume that working dead keys in keyboard depends firmware modification and it can be really difficult, no ?

Thanks.

Van ducasp

Paladin (669)

afbeelding van ducasp

15-11-2022, 22:20

mpsantos7 wrote:

Hello.

I made it with partial success.
I edited the character table in your rom to run some programs in Portuguese and it worked well.
I added a customized mega assembler rom (I'm addicted to it), It worked, however it breakup megasd disk operation.
It appears that ocm--bios.dat with less than 512kb works fine.
I assume that working dead keys in keyboard depends firmware modification and it can be really difficult, no ?

Thanks.

MSX BIOS will map column / row to specific characters and might have specific behavior for things like á à etc

FPGA code generates column / row based on PS/2 keys

So, if you want certain keys to have different behaviors, you need to figure out which are the column/row they activate on your Portuguese BIOS, which PS2 key you want to use for those column/row activations, and work on the keymap vhd file for the keyboard layout you want to implement those changes (i.e.: https://github.com/gnogni/ocm-pld-dev/blob/master/esemsx3/sr... )

Van HRA!

Champion (289)

afbeelding van HRA!

27-11-2022, 01:44

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