need help with dreamcast HDD IDE

[OzOnE]

OK, may have just been a loose connection on my DC then, or the console was left in an unknown state?
It didn't seem to do it the other day, so I'll try it again later and see how it goes.

Right now, I've just tried booting from CD-R, and DS booting from HDD, and it's much better.
Now I can play twice as many games in Direct mode.

Just need to crack that BIOS protection now, and I'll probably never use a GD drive ever again. lol

It's definitely booting the core from the HDD though, which is excellent!

OzOnE.

[SWAT]

Ahh I'm edit prev post after your answer...
I make new bios for boot loader with switching, test it: http://www.dc-swat.ru/download/dc/ds/4.0..._switch.7z

[OzOnE]

Oooh, nice.

I think the link is broken though?
Looks like the URL was pasted, but is the short version (eg. "4.0..._switch.7z" at the end).

[SWAT]

Sorry, I'm make copy-paste from prev post... Fixed.

[OzOnE]

OK, trying now....

---

It just freezes at the "Press A" part?

I tried the controller in all four ports, and tried rebooting / removing the CD, but it won't go past the Press A part?

I'll try plugging in the DC keyboard - I noticed before with the KOS examples that it can freeze if no keyboard is plugged in!

---

Still no joy.

I have the keyboard plugged into port 2 now...

I tried pressing A on the controller with the BIOS switch set to the SWAT BIOS, then tried setting to Sega BIOS, then without a CD-R in / lid open, then with no SD card in etc. (resetting after each attempt).

Code is stuck somewhere?

[OzOnE]

If it makes it easier, you could try just adding a 4-second delay to allow switching to stock BIOS?

[SWAT]

I think it's freezes at GD-ROM initialization... I just added some message for check it. Download again.

[OzOnE]

OK, thanks.

Testing....

---

Just says...

"Please switch to stock BIOS and press A"
"Initializing GD-ROM..."

Then freezes?

[OzOnE]

(in other words, it shows the "Initializing GD-ROM" before I even press start?)

[SWAT]

Hmm... Ok, I'll deal with it later, I did just a delay of 5 seconds. Download again.

[OzOnE]

No problem.

Just trying the delay one....

---

Still freezes at the "Initializing GD-ROM" stage?

Does that mean I need to switch to the stock BIOS before the "Init GD-ROM" message shows?

I've tried that, but it gets stuck?
Has anything else changed in the code? Just a delay should have been enough?

OzOnE.

[SWAT]

(12.06.2014 13:12)OzOnE писал(а):  Does that mean I need to switch to the stock BIOS before the "Init GD-ROM" message shows?

Yes, before this message.

(12.06.2014 13:12)OzOnE писал(а):  Has anything else changed in the code? Just a delay should have been enough?

Just move initialization of GD drive and iso fs from KOS kernel to the boot loader code after delay...
Hmm maybe this is problem of the syscalls...
I make new bios, remove GD drive initialization and add only BIOS check before IDE initialization. Try it.

[OzOnE]

Working now.

Well, it WAS working...

So, I switched to the stock Sega BIOS just before the messages appeared and left it switched to stock...

It booted from SD (IDE wasn't shown?), but I was still able to read the HDD and boot Sonic Adv 1 in Direct mode.

But now it doesn't seem to want to boot after the Dreamshell 2.2 Boot Loader, just a black screen?

I think maybe something on my SD card has been corrupted?

It did definitely work though.

Do you need to load anything else from the custom BIOS after boot?
ie. should I switch back to the Flash BIOS at a certain point?

I've tried that too, but it's getting stuck after the loader screen now (red spiral)?

OzOnE.

[OzOnE]

Weird - it doesn't want to boot into DS at all now?

I've just formatted the SD card, then loaded DS RC 2.2 back on, but it still won't boot past the "Red Spiral" loader?

I can hear two faint clicks from the TV speakers as if it's initializing the AICA, but then a black screen?

I've tried unplugging the HDD and booting from SD, but still no joy?

Really strange, as it worked fine the first few times?

I'll boot from CD-R again and see what works...

[SWAT]

Nothing else is loaded from the BIOS.
Obviously not everything is so simple, need to continue to try.
I think we need to leave the conversation on forum, look at your private messages.

[OzOnE]

It's quite strange - I've tried comparing the Flash to the new one just to be sure, and it still boots fine via stock BIOS / CD-R, but the new test BIOS doesn't want to load DS core?

Oh well. I'll have to figure something out.

Do you have a method for debugging the BIOS on the real DC?

I'd love to be able to use the serial port again, so I can play with some KOS stuff.
I might try that tonight by booting from HDD, and connecting to the serial port.

OzOnE.

[SWAT]

Messages about Holly protection has moved to http://www.dc-swat.ru/forum/thread-2150.html