Applied both mainline PCem commits;

Fixed the RTL8029AS again (one of my "fixes" broke it);
RTL8029AS PCI register 4 is now written to;
Added incomplete (and currently commented out) emulation of the AWE64 PCI;
Replaced sector-based floppy emulation with more accurate code.

src/model.c

@@ -625,5 +625,6 @@ void model_init()
         io_init();
         
 	fdc_update_is_nsc(0);
+	ide_ter_enabled = 0;
         models[model].init();
 }