Post by: RIPDOTCOM on December 07, 2002, 05:11:00 AM
Post by: h4tr3d on December 07, 2002, 05:29:00 AM
Post by: Potenza on December 09, 2002, 04:51:00 AM
Be sure to let us all know if this works...
Post by: testerx on December 11, 2002, 03:54:00 PM
Post by: blueoasis on December 11, 2002, 04:11:00 PM
Post by: RIPDOTCOM on December 12, 2002, 04:20:00 PM
The memory unit you inserted isnt functioning it may be damaged.
Post by: blueoasis on December 12, 2002, 04:31:00 PM
Post by: h4tr3d on December 13, 2002, 02:53:00 AM
| QUOTE |
| Plug and Play is a technology developed for the PCI bus, so that devices on the bus get their memory regions, I/O ports and IRQ lines assigned dynamically. This way, there will most probably be no I/O resource conflicts, no matter what you plug into the PCI slots. On a Plug and Play enabled IBM-PC, either the BIOS or the PnP OS (such as Windows 95/98/ME or Windows 2000/XP, but not Linux) assigns the I/O resources to the PCI devices. In case of Linux, the BIOS does all the work, and Linux can then query the assigned addresses from the PCI bus. The Xbox makes use of the PCI bus, too, but the Xbox kernel, unlike the Windows 2000 kernel it is derived from, is not Plug and Play aware. It expects certain hardware at predefined addresses, for instance the SMBus controller can always be accessed through the I/O port addresses beginning at 0xC000. So unlike Linux, it does not query the PCI hardware to get the correct resources, but it expects the code that has been run before the Xbox kernel to assign constant addresses and I/O lines for the different devices. For Linux on the Xbox, this has two implications: If we run the Linux kernel from within the Xbox kernel environment, we can read the resource allocation from the PCI configuration, just as on a PC, because the Xbox kernel bootloader has already assigned the resources of all devices. Our clean-room ROM replacement will either have to assign the same resources to the PCI devices as the original initialization code, or contain real Plug and Play resource assignment code. Any way, there will have to be some hardware initialization code. The PCI bus on the Xbox can be accessed as on any PC/AT through the ports at 0xCF8/0xCFC. Look at arch/i386/kernel/pci-pc.c in the Linux kernel for details. |
also
| QUOTE |
| OHCI USB Controller, IDE Controller These devices are compatible to standard PC devices and require no additional code |
now i know this says PCI, but i beleive the same holds true for USB. The xbox looks for predefined hardware, so this is why i beleive your HD would show up as a memory device but with an error. this is also why a usb hard drive would probably only work under linux at the moment.
i think changes would have to be made to the kernal so the xbox would be able to find the drive correctly and then run things from this location as well.
Post by: h4tr3d on December 13, 2002, 03:29:00 AM
| QUOTE |
| I'm enjoying talking to myself here, hopefuly someone else will read some of this and be able to contribute. As I'm finding out more I am posting it so all can see it without having look that up first and duplicate any effort. Doesn't look like you could plug a memory card directly into a port on the front, at least not for use with anything written using the SDK. To mount a memory card requires the slot ID, XDEVICE_TOP_SLOT or XDEVICE_BOTTOM_SLOT. I had assumed that along with XDEVICE_NO_SLOT these would map to 0, 1 & 2 (not in that order) to represent the port numbers on the integrated hub. However these constants turn out to be 0, 0 & 1, so the extra 1 is obviously added in the library for the two slots (giving 0, 1 & 2), and so we are not able to get down to the first port on the hub (real 0) for the to access a momory card there. Unless we can put a value of -1 to get back upto 0. That wouldn't work either, the xbox assigns a drive letter to the memory card (just like a pen drive under windows, then you use it like a normal disk drive). The letter assigned is apparently predetermined by the slot the card is in, so the library wouldn't know what letter to issue if we got it to plug in to the first port on the hub. rab. |
here he is saying that you cant just plug a memory device into the front of the xbox. you must plug a memory device into the controller in order for it to be recognized properly.
also:
| QUOTE |
| Went out and bought a memory card to test my theory (didn't get the genuine MS one, got an InterAct authorised accessory one, which came with an extra "break-away" cable, which was handy to connect my keyboard to the box at the same time as my controller). Connected a USB lead to it, like so:(no picture) Plugged it into the PC and it shows up a an unknown USB device, under Windows XP. It shouldn't need drivers for a standard USB storage device, so it must be a bit different. To test a bit of other USB thinksings I plugged the memory card into the back om keyboard hub, and plugged the keyboard into the xbox, and the box can access the memory unit as expected. rab. |
basically he is saying that he plugged in a memory card to windows but it wouldnt be recognized, and conversly when he plugged the memory card into his xbox thru the usb hub in his keyboard it worked fine...im assuming he had his keyboard plugged into the front of the xbox.
so this is contradictory, because a memory device does work when plugged into the front of the xbox thru another hub....what is going on here??
| QUOTE |
| Finally got my final year project done, and so had time to play with this a bit more. Plugged the memory card into the PC under linux to get some info from it. T: Bus=02 Lev=03 Prnt=03 Port=01 Cnt=02 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=32 #Cfgs= 1 P: Vendor=05fd ProdID=1316 Rev= 1.00 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 60mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=42 Prot=50 Driver=(none) E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms As you can see it is a mass storage device (0x08), but it has a subclass of 0x42, which in the spec is listed as reserved for future use. Has this been implemented now? If so what is it? Haven't been able to find much about it. rab. |
aha...keep reading, we are getting there....
| QUOTE |
| I suspect it would be possible to write a driver, though I don't know how easy it would be. The subclass of 0x42 is not an official one as far as I can tell. This defines block message format used to comunicate with the device, so you would need to understand it to write a driver. I suspect MS made up a new, non-standard, one so they could licence the info, and prevent just anyone making them. |
so basically a memory card could not be recognized under windows without a special driver....on the other hand, a standard usb storage device like a hard drive wont be recognized by the xbox, no matter where its plugged in, i believe.
you could try it, however.
controller with usb port
this guy put 2 usb ports in his controller...this would enable you to plug the harddrive in here and see if it makes a difference....i dont think it will though.
even if it did work, that still doesnt mean you could run anything stored here other that gamesaves.
Post by: RIPDOTCOM on December 13, 2002, 06:35:00 PM
Post by: h4tr3d on December 13, 2002, 10:25:00 PM
)anyone have some spare time/knowledge they want to share?
Post by: Pheonix on December 18, 2002, 10:49:00 AM
Post by: razorrifh on December 18, 2002, 01:50:00 PM
Post by: BenJeremy on November 27, 2002, 09:58:00 PM
USB drives show up as memory cards on the Xbox, apparently.
Post by: Scan-C on November 28, 2002, 02:56:00 PM
| QUOTE (BenJeremy @ Nov 28 2002, 05:58 AM) |
| Try a search of the forums next time.... been there, done that, as they say. USB drives show up as memory cards on the Xbox, apparently. |
that's the way i take my savegames to a friend.an external usb drive 500 mb is more than i would ever need
and it was cheaper than any memory card
Post by: Cornholio on November 29, 2002, 01:44:00 PM
| QUOTE (BenJeremy @ Nov 28 2002, 04:58 AM) |
| USB drives show up as memory cards on the Xbox, apparently. |
Yes, but don't the memory cards just show up as another drive (i.e. with a drive letter) ?
Is there any reason you couldn't launch an XBE from a memory card?
Post by: socrates on November 29, 2002, 01:55:00 PM
Post by: foocankill on December 01, 2002, 05:14:00 PM
Post by: Cornholio on December 02, 2002, 04:24:00 AM
A USB DVD-ROM drive.
No more having to remove the internal DVD to wire up another one. Just plug up a USB DVD drive to a controller port.
You could add an option to the EvoX menu to get it to boot from this DVD drive. And in future I'm sure a BIOS patch could be added to get the box to try and boot from this drive, and then the internal drive, without too much difficulty.
Sure, it wouldn't be as fast as IDE. But it's still like 1.25MB/SEC, which seems to be about as fast as the internal drive reads original Xbox games anyway. So all in all, pretty good solution if you ask me.
Post by: Cornholio on December 02, 2002, 09:00:00 AM
Post by: stiGGy on December 02, 2002, 10:53:00 AM
Post by: foocankill on December 04, 2002, 08:05:00 PM
Post by: Fuzzy on December 04, 2002, 08:59:00 PM
| QUOTE (BenJeremy @ Nov 28 2002, 04:58 AM) |
| Try a search of the forums next time.... been there, done that, as they say. USB drives show up as memory cards on the Xbox, apparently. |
speaking of which have you seen my post? me and brass monkey are going to try and make a usb memory card so that instead of sacrificing a port you plug it into a memory card. Sounds cool huh? yea i guess not...