msx connect to pc with arduino

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By RvS

Resident (48)

RvS's picture

30-05-2020, 23:12

I am trying to contact the person that made this:
https://youtu.be/q8jvGS339yY
If he can include my serial code, it could run at 57600.

By ocitygate

Expert (67)

ocitygate's picture

08-02-2021, 13:34

Quote:

I am trying to contact the person that made this:
https://youtu.be/q8jvGS339yY
If he can include my serial code, it could run at 57600.

If you have any comments or questions, please contact @tiny_yarou on twitter.

By ocitygate

Expert (67)

ocitygate's picture

13-02-2021, 19:33

Quote:

If he can include my serial code, it could run at 57600.

I'm developing something similar to JJFS.
I have used your serial code and it works perfect. Thanks.

By Danjovic

Master (184)

Danjovic's picture

14-02-2021, 02:08

RvS wrote:

I may have a small piece of software that could help here.
I just finished a basic serial driver send/receive bytes via the joystick port here.

It is possible to put the entire byte altogether with parity and one or two stop bits into hl register and transmit them all in a single loop with exact timing (link)

Of course 57600 is quite ans achievement, congratulations!

By st1mpy

Paladin (737)

st1mpy's picture

21-04-2021, 01:43

I've got an arduino mega connected to cartridge slot. It can do read write (8 bit parallel data) using in and out io port calls. Through serial usb connection it can talk to pc terminal software as well. I've almost done loading a rom file from the sd card on arduino to msx, but I get some corruption. May be this wire mess on the breadboard is no good, but might just have to write an error checking code. There are so many things you can connect to an arduino, now this can share them all with a msx!

By st1mpy

Paladin (737)

st1mpy's picture

22-04-2021, 21:22

Sorted out the corruption, loads the game without error from SD card now. It didn't even need error detection so removed that, but it is slow (takes over a minute to load 16kb!). So need to fix that...

By st1mpy

Paladin (737)

st1mpy's picture

22-04-2021, 23:31

Got it load in more reasonable speed. 20 seconds with 8 bytes buffer, 12 seconds with 16 bytes buffer including time to write to disk, so I guess it can be even faster. (So, it's just the time to write to CF card on Beer Ide is contributing to the reduction/slow down).

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