I had a problem when I tried to assemble the program of the RTC which I got from the RTC tutorial.

Here are the errors I recieved:

1. Invalid byte base in bit adress expression (F20TH_OF_SECOND EQU TMR_SEC*.05)

2.Expression with forward reference not permitted( RESET_VALUE EQU 65536-F20TH_OF_SECOND)

3. Undefined symbol (pass-2) (MOV TH1,#HIGH RESET_VALUE )

I'm using microvision51.