Why do you think there are only timer 1 and timer 0 modes? Did you check the tutorial on the 8052?

Or maybe even better: If you look at the datasheet of your controller (check the web site of the manufacturer), you should be able to figure out what specific timer modes you can use for that derivative.

on p7 of http://pdfserv.maxim-ic.com/en/ds/DS8...87C520.pdf it says that "The High-Speed Microcontroller User's Guide describes all SFRs."
You can find the info in http://pdfserv.maxim-ic.com/arpdf/Des...rguide.pdf on page 119 of that document.

Anything else? ;-)

Regards

Patrick