On Tue, Jan 17, 2006 at 01:31:11PM +0100, Harald Welte wrote: > On Tue, Jan 17, 2006 at 11:11:02AM +0100, Patrick Boettcher wrote: > > On Tue, 17 Jan 2006, Harald Welte wrote: > > >*sigh* (sorry). > > >Is the PID filter really implemented in hardware, or is it implemented > > >in the Firmware? If it is the FX2 firmware, I'm happy to work on a > > >patched/hacked version for it. > > > > I'm not sure about that. Some say it is a separate hardware, but I > > believe it is just something in the firmware. > > Ok, I'll look into that. It's been some time since I last did 8051 > stuff, but a 8k firmware image is certainly not something too complex to > look into. > > After taking the device apart, there basically is nothing on the PCB > that looks intelligent enough ;) There's the MT532, the can tuner and > the FX2. I did some firmware work on an early, open DVB-T/USB-2 prototype based on the FX2 (long dead, but software and docs still available: http://linuxtv.org/cgi-bin/viewcvs.cgi/dvb-hw/dvbusb-fx2/). The FX2 has certain restrictions which make it IMHO impossible to implement PID filtering in firmware, although the main dvbusb-fx2 developer, Holger Waechtler, always claimed that he knew a way to do it. However, he didn't implement it (and thus no USB-1.1 compatibility) in the Terratec CinergyT^2, which he did based on the knowledge gained in the dvbusb-fx2 project. Maybe there's a newer version of the FX2? If you can live with a USB-2.0-only device, the CinergyT^2 seems to work pretty well and is fully supported, and still widely available. HTH, Johannes
