Well, that was Metalguy66's idea in 1st place, I'm just following the paradigm. Some year ago, he used hard facts to disect eventual A500 - NIC integration. In short, with functional SANA2 driver for one older Realtek chip (IIRC, the same one used in X-Surf) a one could use make simple RTL8029 interfacing with a small buffer, simple glue logic and few passive elements to adapt it to Zorro. There's no Zorro port inside A530 or HD+, but all signals are set in place in GVP's proprietary connector used with GVP286 PC bridge.
