[Coco] $4 USB HOST a chip

Mark Marlette mmarlette at frontiernet.net
Thu Feb 23 10:04:56 EST 2017

I will agree with Allen here, in the case of the keyboard.
All I have to do is change a few modules in the PS/2 interface at Cloud-9 and it will do USB.
Actually already done it....just never finished it as a product. I have a better idea.....don't ask... :)
Regards, Mark Marlette
mark at cloud9tech.com
mark at gamecamaddict.com

      From: Allen Huffman <alsplace at pobox.com>
 To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
 Sent: Thursday, February 23, 2017 8:49 AM
 Subject: Re: [Coco] $4 USB HOST a chip
> On Feb 23, 2017, at 8:38 AM, John W. Linville <linville at tuxdriver.com> wrote:
> That's just not true. Code running on the CoCo that probes the PIA
> for keyboard input is not going to work with a USB keyboard, no matter
> what the USB chip pushes down the serial port.

I don't know what the serial port has to do with this.

The adapter would plug in the keyboard port, just like the PS/2 adapters and such. Key up, key down, etc. would all be mapped in to the proper matrix so it would be 100% transparent to the CoCO.

> You are probably thinking that the USB chip can handle HID-style
> devices already, which might be true. But there will still need to
> be something running on the CoCo to translates whatever the USB chip
> sends on the serial port into useful input for programs running on
> the CoCo. Frank is right, it will be easier to centralize that piece
> of software in OS-9. Code running under DECB will need every program
> to be individually patched for the new USB chip's input.

Ah, I see. No, not serial. It would plug in to the Keyboard port.

A second interface would plug in to a joystick port for USB joysticks.

Best part ... either could take a cheap Bluetooth dongle, then you could use a bluetooth keyboard, bluetooth mouse, or CERTAIN types of Bluetooth game pads. It appears gamepad are not standardized, and they have different firmware for different types of PS gamepad.

        -- Allen

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