[Coco] Serial to usb printers

[Luis Fernández]

Thanck you very much

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



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Making 
CoCoDskUtilPack V 1.0.10.zip, Scan magazines and organize maltedmedia
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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
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> From: gheskett at wdtv.com
> To: coco at maltedmedia.com
> Date: Tue, 5 Jun 2012 22:12:41 -0400
> Subject: Re: [Coco] Serial to usb printers
> 
> On Tuesday, June 05, 2012 09:49:12 PM Luis Fernández did opine:
> 
> > Hi
> > I do not know enough hardware to do this but I wonder?
> > If the serial, the coco, has input and output, and 5V
> >  And the usb I think, has something similar, but at high speed (tien
> > 4-wire input and output voltage) Can anything be done or already done
> > something?
> > 
> If you are talking out driving a modern usb driven printer via the coco's 
> bit banger, there are currently 2 ways I use often.  I did, before 
> drivewire, run a couple scripts on this linux box that monitored the usb 
> port created by connecting the bit banger port to a ser-usb adapter, 
> waiting for something to be sent to /p on the coco/os9 system, writing it 
> to a file, and when the data stopped, assumed EOF and sent it back to a 
> printer plugged into the same hub as the ser-usb adapter was, using the 
> cups 'lp' facility, which used ghostscript to convert the text into a 
> rasterized image the printer understood.
> 
> However, since I have a 6309 in my coco3, and as nitros9 has never 
> readjusted the /p timings such that "xmode /p bau=6" actually ran at 9600 
> baud, which has to be pretty closely matched for the adapter to function.  
> For my system, the default timing of 13 at bootup, giving around 12.5 to 13 
> kilobaud, needed to be slowed by the utility that can adjust that to 
> something in the 30 to 31 area.
> 
> Nowadays I use drivewire, which uses one of its 16 data channels as a 
> printer port, doing the same thing except at 115 kilobaud.  The printer 
> itself is a $120 B&W Brother HL2140 laser that runs at 21-22 pages a minute 
> using the default font.  Fastest printer I've ever had on my coco, and 
> beautiful output as lp can also specify any truetype font that exists on 
> this machine.  Big, black fonts will of course use up an $85 toner 
> cartridge faster though.
> 
> The older bash scripts are on my web page, but the drivewire solution is 
> better, I don't have to fiddle with /p port speeds.
> 
> Cheers, Gene
> -- 
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