[Lazarus] SdpoSerial Tx and Rx buffers?

[Hans-Peter Diettrich]

Michael Schnell schrieb:
> On 02/18/2011 03:14 AM, Hans-Peter Diettrich wrote:
>>
>> Quite a bit. Applications don't have to care about such hardware details,
> 
> Yep and this is why user land software can't (and should not) detect the 
> point in time the data it issued towards the serial port actually has 
> left the box. These systems (Windows, Linux, Mac) are not supposed to 
> support hard realtime after all.

There exists no guarantee for undisturbed transmission. Secure software 
must be prepared to re-transmit the data, in its protocol, regardless of 
realtime requirements. It's perfectly sufficient when the software is 
informed that the next data packet can be supplied for transmission.

DoDi