v8.01 includes peripheral simulation for C8051F120. All VT_REGs are not present in debugger though. I can not connect to UART0 since only S1IN and S1OUT are present.
I obtained the listing by typing DIR VTEG. Also, I see the registers in the Symbols Window. The registers missing that I need are for the UART0 peripheral. These include S0OUT, SOIN, and S0TIME. They appear for UART1 however. The 120 has two UARTs.
You are correct, there seems to be a problem. Can you please send an email to your support, so that we can supply a patch. Reinhard
Done.