Separated main code from UI and PLATform support code, plus other generally small fixes here and there.

src/machine/machine_ps2_mca.c

@@ -809,7 +809,10 @@ machine_ps2_common_init(machine_t *model)
 
         machine_common_init(model);
 
+#if 0
+	/* Already done in pc.c. */
         mem_add_bios();
+#endif
         dma16_init();
         ps2_dma_init();
         keyboard_at_init();