Factored out settings specific more to architecture and/or toolchain rather than specific target.

cpu/6502/6502-conf.h

@@ -0,0 +1,18 @@
+#ifndef __6502_CONF_H__
+#define __6502_CONF_H__
+
+typedef unsigned char  u8_t;
+typedef unsigned short u16_t;
+typedef unsigned long  u32_t;
+typedef unsigned short uip_stats_t;
+
+#define CC_CONF_REGISTER_ARGS 1
+#define CC_CONF_FASTCALL      __fastcall__
+
+#define CCIF
+#define CLIF
+
+#define UIP_ARCH_ADD32  1
+#define UIP_ARCH_CHKSUM 1
+
+#endif /* __6502_CONF_H__ */