- From: Ian Abbott <abbotti_at_mev.co.uk>
- Date: Mon, 07 Feb 2005 16:15:44 +0000
On 02/07/05 15:09, Ian Abbott wrote: > So interrupt driven commands are a bit of a no-no? I thought crappy > unreliable interrupt timing would be better than even crapper process > scheduling timing! > > There are a few existing drivers that make use of interrupt driven > commands for data acquisition: > > 8255 - has some incomplete support for commands > dt2814 - has interrupt driven ai > pcl711 - has interrupt driven ai > pcl812 and pcl816 - uses interrupt driven ai if DMA disabled > pci818 - sometimes uses interrupt driven ai (depending on convert_src, > etc.) Admittedly, in the case of interrupt driven ai, the data value is latched by a hardware signal, so perhaps that's not a valid comparison, in which case, only the incomplete support for commands in the 8255 driver is a valid comparison. That, and the amplc_pci230 driver that I forgot to mention - it does interrupt driven ao. -- -=( Ian Abbott _at_ MEV Ltd. E-mail: <abbotti_at_mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
Received on 2005-02-07Z16:15:44