I have an old ne2000plus isa ethernet card connected up to my Atmel 51rc. I can get it to soft reset load register and write register BUT when it comes to getting a packet from the remote DMA port then
I get nothing.
The code I am using is for the Packet Wacker from edtp.com (rtl8019as) and when I have the packet wacker connected It works.
What is the difference in the DMA port between the rtl8019as and the dp83905? Different recieve location?

code eg:

(from 'get_packet' called after and interrupt and ISR says PRX both
verfied to be working. the code below does NOT get valid data)

//execute Send Packet command to retrieve the packet
write_rtl(CR,0x1A);
for(i=0;i<4;++i)
{
read_rtl(RDMAPORT);
pageheader[i] = byte_read;
}



Definition:
~
#define txstart 0x40
#define rxstart 0x46
#define rxstop 0x60
~
//Only A0-A4 connected A8-A9 High Base IO=0x300

#define CNTR2 0x0F
#define RDMAPORT 0X10
#define RSTPORT 0x18


Thanks,