Date   : Fri, 26 May 2006 10:54:50 +0100
From   : "Graham/Carole Caulton" <graham.caulton@...>
Subject: Re: Status Bits on BBC Micro RS423 port

Thanks for info. I had made the mistake of searching everywhere (Web and 
Advanced User Guide) with "FE08". "Sheila &08" would have found it. Thanks.

----- Original Message ----- 
From: "Eelco Huininga" <eelco@...>
To: <bbc-micro@...>
Sent: Friday, May 26, 2006 8:18 AM
Subject: Re: [BBC-Micro] Status Bits on BBC Micro RS423 port


>
> &FE08 maps to the 6850's status register. The status bits are:
>
> bit 0: RDRF Receive Data Register Full
> bit 1: TDRE Transmit Data Register Empty
> bit 2: DCD Data Carrier Detect
> bit 3: CTS Clear To Send
> bit 4: FE Framing Error
> bit 5: OVRN Receiver Overrun
> bit 6: PE Parity Error
> bit 7: IRQ Interrupt Request
>
> A more detailed description of the 6850's status register can be found in 
> the 6850's datasheet or in the Advanced User Guide on page 389.
>
> Cheers,
> Eelco
>
>
>
> Graham/Carole Caulton wrote:
>> I have an application on my BBC Micro that uses a teletext adaptor to 
>> send information to my PC. Under windows xp this is playing up. Does 
>> anyone have a definition for the status bits at &FE08 (the RS423 port) 
>> which will help me sort out the problem.
>
>