G1-ATA Devices

[OzOnE]

Wow, a lot of progress here to catch up with.

Sorry, but I can only reply in English - I don't think Google translate would work very well anyway.

Looks like there is good support for the G1 adapter now.

I'm super grateful to Lawrence (BlueCrab) for adding the code to KOS.
He also has one of the G1 adapters for testing.

Yep, I'm 99% sure it's just bad luck with the CF adapter that SWAT is using.
I had similar issues with an adapter not working, and when I bought a new cheap £3 one, it worked fine.

I suspect it's because the jumper on some of these adapters only allow swapping of Master / Slave between the two CF sockets?
You would think that wouldn't be a problem when using only one CF card though, so I'm not really sure what causes the problem.

I'll be sending a working CF adapter to SWAT soon, but I'm still recovering from the Flu, so have been unable to even test the latest DCIO code.

@megavolt85 - how are you connecting an IDE device to your DC?
Do you have your own adapter, or did you solder directly to the motherboard?

Great idea with the ATX DC-DC converter btw.
That would be perfect for portable Dreamcast gaming - I could even use that in a tent.


For easier testing with IDE devices (set as slave, GD drive still plugged in), you could try my simple test code...

https://mega.co.nz/#!ilpwxLBK!9koDmA8ziS...Dn0bOxvodk

The problem is, I think this may now clash with the new G1 slave driver in KOS, so it may only work with the older version of DS??

The code has it's own problems too - I think it worked best if you leave a GD disk in the drive, then press Y ONCE to switch to the CF card / HDD.

It should display the raw sectors on the IDE device, and you can switch between HEX and ASCII-HEX display by pressing X.

The DMA code is broken too - it seems to work OK if I add a short delay between loading of each block, but waiting for the proper DMA interrupt just crashes everything.
Also, I found that the code froze at the start if the DC keyboard is not plugged in!

There's some other junk in the code from where I was trying to load IP.BIN and 1ST_READ.BIN from a game GDI.
I didn't use any file system at all on my CF card - I just wrote the track03.ISO for the game directly to the CF card.

In the code is my failed attempt at getting GD redirection working too, but it may still be helpful to someone?

I think I'll just have to try a G1 adapter with the new KOS and see what happens.
The source code for KOS is on sourceforge now too, so we can see exactly how it's managing the sectors etc.


When I've got over this Man Flu, I'll be testing all of this stuff too.

OzOnE.