i searched this forum for some answers, there already were questions concerning flashing via NIC, but these threads are a bit old and that's why i thought about asking this again. Just to make clear: my intention is to use a NIC just like the c't Flasher but with the advantage of the PCI bus. I saw that Uniflash supports PCI cards but in which way? Only flashing NIC bootroms or VGA Biosses?
Realtek (RTL) based NIC can only be used for 1 Mbit chips since that's the biggest EEPROM chip capacity that RTL chip can decode, so, there is no workaround to make them supports chip with larger capacity.