I use Keil uVision2 v2.20. Cygnal C8051F320/1 is not listed in the device list. So what do I need to select from the list, to make a new project for this controller? Thanks.
Time for an update perhaps. My copy of uV2 version 2.38a has both the 320 & 321 in the device list. Also take a look at http://www.keil.com/dd/ the place to check if any device is supported by the Keil tools.