>>>>> On Mon, 27 Feb 2006 09:29:23 +0800, zhuzhenhua <zzh.hust@xxxxxxxxx> said: zzh> our board is a FPGA board for embedded system, there is no ISA, zzh> and use memory map IO, is there anything need to configure? Even if it is not true ISA, your FPGA should drive ISA-like signals for the chip. AC timings of these signals should meet the requirements of the chip. I do not know they are configurable or not. Do cross-check the 8019 datasheet and the FPGA specification. zzh> now i printk the ISR and RSR value when bogus packet accepted, zzh> are these two registers correct? messages as follow It seems correct. So it would be something wrong with get_8390_hdr ... --- Atsushi Nemoto