Usb / would this be possible?

[Oli_hd]

short answer: no
Long answer: kinda, there are UART to USB converters that let you mount the device (IE the Amiga) as a USB peripheral so it could be accessed by USB from another computer, that said you could not plug a harddrive or other USB devices into your Amiga. Basically you would get the USB B type connector on your Amiga but it would be of no use.
The second and much more complicated way would be to make a small 8bit computer with USB and serial, add a bit of software on both the Amiga and the 8bit chip, basically a serial network between the two, that would give yo uaccess to harddrives, CD-Roms etc. It would be as slow as a serial network but it would work.
I have seen Ethernet demo boards that are only 1.5" square that do this.. not a great solution though.

[Oli_hd]

And why not try to use the user port directly?  I haven't had much time to solder things and so, but I am still thinking about to make a project wich makes usb connection possible on the C=64 using the user port and an AVR or PIC or something like that.

Im assuming your talking about the user port on a C64, if so sorry I wasnt
I was talking about just on the Amiga, now you could talk about using the printer port or the side expansion slot, in both of those situations I would think of looking at a small 8bit USB host chip like the SL811HS.
As for using a PIC are you talking about the ones with USB on-board because they are peripheral controllers, they are not host controllers so again, woudnt let you plug a harddrive in.
As for the AVR's, sorry I dont know jack about them.

[Oli_hd]

Maybe some people now understand why it's not quite straight forward in doing research and developing a USB host controller expansion for the Amiga (and not just taking a bog standard PCI card). There is not much of a choice regarding the controller chipset.

Ive just bought a great Philips USB 2.0 controller from Digikey (just to pad the order up to the £100 where I get free postage) which has a standard (well, as standard as it gets) CPU bus interface (16 or 32bit selectable) that drives three USB ports at 480mbps, does DMA, the lot.
There was also on-the-go controllers and single port version yeah the software may be a bit of fun (havent looked at it, this was gonna be for a none Amiga project) but the chips are out.
That said yeah the SL811 is evil, buts its about the only PLCC case USB host controller your gonna find and it is workin on the Amiga already so it was the obvious choice.

Anyhow it was a bit of a silly topic anyway a serial to USB controller would be Soooo slow you couldnt use it for much other than downloading photo's from a camera and there are nice IDE adaptors for that.

edit: The USB chip I got was a Philips ISP1760BE (Digikey Linky)

[Oli_hd]

Yup, thats the sort of thing utri007 was lookin for.
Now just to make it work on the miggy  :lol: