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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: stanlong on March 01, 2009, 03:14:56 AM

Title: A1200 USB port/s
Post by: stanlong on March 01, 2009, 03:14:56 AM

can I live any longer with out a USB port in my Vanilla Wedge  :oops:

Title: Re: A1200 USB port/s
Post by: rkauer on March 01, 2009, 03:50:35 AM

 A vanilla A1200? USB board (Subway) don't work without an accelerator with at least a 030 running at 33MHz (dog slow).

Title: Re: A1200 USB port/s
Post by: Rabbi on March 01, 2009, 03:54:49 AM

To even add a SUBWAY (http://www.e3b.de/usb/main_subway_e.html) card on the A1200 clock port, the requirements states that the minimum CPU is a 68030 of at least 25 MHz.  Looks like you'll need an accelerator of some sort.

Title: Re: A1200 USB port/s
Post by: Rebel-CD32 on March 01, 2009, 12:16:27 PM

You can use USB Mice, keyboards, hubs, printers and some other devices on as little as a 7Mhz 68000 with 512Kb RAM using the ANAIIS USB stack. Sure, it's not as fully featured as Poseidon, but it would get you through until you can afford to add an accelerator. ANAIIS works very well with my A1200 Subway.

Title: Re: A1200 USB port/s
Post by: Flashlab on March 01, 2009, 12:43:25 PM

What would you need USB for on a plain 1200?

Title: Re: A1200 USB port/s
Post by: platon42 on March 01, 2009, 06:04:44 PM

Quote

rkauer wrote:
 A vanilla A1200? USB board (Subway) don't work without an accelerator with at least a 030 running at 33MHz (dog slow).

Not quite correct. It will work with any CPU >=68020, but it will be dead slow. Moreover, I doubt that 2 MB is enough RAM for everything, so an accelerator with more RAM is sensible.

Title: Re: A1200 USB port/s
Post by: stanlong on March 03, 2009, 11:08:15 PM

what you got against dogs   dog slow

Title: Re: A1200 USB port/s
Post by: ChuckT on March 04, 2009, 02:28:46 AM

Why can't someone just program a UART to work with USB?  If you have a fast enough communications chip, you shouldn't need an accelerator.