Messages in this thread | | | Date | Thu, 11 Nov 1999 22:56:25 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: Need info about serial port programming -UPDATE |
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On Fri, 12 Nov 1999, Jens Benecke wrote:
> On Thu, Nov 11, 1999 at 06:53:00PM +0000, Alan Cox wrote: > > > > serial port, which makes me kind of sick. It seems that there is no > > > thought of a standard serial RS232 handshake protocol. > > Take the soldering iron and insert it somewhere educational for them 8) >
I had to make a serial transceiver that would do 120 kBYTES per second. I had to rip bytes into bits and also generate a clock. Two pins on the 'printer' port is all you need. It isn't pretty, but it works.
Receive 'latched' the 'paper-out' bit on the printer-status interrupt. (old printer-port, one-way). This worked. It was decided to do this when it was discovered that the 8250 UART was clocked-internally on the baud-rate so that RTS/DTR would never change fast enough.
Cheers, Dick Johnson
Penguin : Linux version 2.3.13 on an i686 machine (400.59 BogoMips). Warning : It's hard to remain at the trailing edge of technology.
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