[Coco] Serial to usb printers

Luis Fernández luis46coco at hotmail.com
Wed Jun 6 10:13:44 EDT 2012

I understand all that, 
have to plot each letter and besides you have to handle the USB protocol which is complex 
But the question is to the hardware connection, the physical connection, voltages etc. ..,
 is it possible?, 
need to interface?

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My personal blog: http://www.luis45ccs.blogspot.com, 
Excuse my English, I use google translator, my language is Spanish, I'm Spanish but I live in Venezuela

> Date: Wed, 6 Jun 2012 08:49:48 -0400
> From: farna at amc-mag.com
> To: coco at maltedmedia.com
> Subject: Re: [Coco] Serial to usb printers
> Won't work with a modern USB printer. Modern PC printers use the driver on the PC to do all the data work. The printer itself has no "brains". The CoCo needs a printer that translates the data to printed characters. You'd have to write a driver for a modern inkjet printer. No brains is why they are so cheap! Anything that can store or use raw data with a minimal driver should work, even a keyboard.
> A printer driver would be a lot of overhead for a CoCo. The only way I'd attempt something like that would be to write a print utility that would run by itself. In other words, save your writing to a file then run the program to print the file. That way the print driver/program can have 100% use of the CPU -- the only practical way to print at a reasonable speed with a modern inkjet printer from a CoCo.
> ---------------
> Date: Tue, 5 Jun 2012 23:02:45 -0400
> From: Luis Fern?ndez<luis46coco at hotmail.com>
> I thought pendrive and read and write anything you connect to usb
> I have the protocol specification v1.0 and USB v2.0
> and is communicated as 1st on the low speed and then go up if You might still
> I also know that the protocol is very difficult but the possibility of connecting any device
> through the port (serial or cartridge) is interesting.
> Could connect keyboards, speakers, Pendrives, printers
> -- 
> Frank Swygert
> Editor - American Motors Cars Magazine
> www.amc-mag.com
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