D. Predefined Symbols

The A166 Macro Assembler knows most of the SFR names, which are predefined names, often referred to as "system names." Predefined names can be turned off with the NOMOD166 directive. If NOMOD166 is given, the user must include a file containing the system name definitions for SFRs and possibly for system bits.

Predefined SFR names and PEC channels are shown in the table below:

Predefined SFR Names and PEC Channels
ADCIC ADCON ADDAT ADEIC CAPREL CC0 CC0IC CC1 CC10 CC10IC CC11 CC11IC CC12 CC12I CCC13 CC13I CCC14 CC14IC CC15 CC15I CCC1IC CC2	CC2IC CC3 CC3IC CC4 CC4IC CC5 CC5IC CC6 CC6IC CC7 CC7IC CC8 CC8IC CC9 CC9IC CCM0 CCM1 CCM2 CCM3 CP CRI CCSP	DP0 DP1 DP2 DP3 DP4 DPP0 DPP1 DPP2 DPP3 DSTP0 DSTP1 DSTP2 DSTP3 DSTP4 DSTP5 DSTP6 DSTP7 MDC MDH MDL ONES P0	P1 P2 P3 P4 P5 PECC0 PECC1 PECC2 PECC3 PECC4 PECC5 PECC6 PECC7 PSW S0BG S0CON S0EIC S0RBUF S0RIC S0TBUF S0TIC S1BG	S1CON S1EIC S1RBUF S1RIC S1TBUF S1TIC SP SRCP0 SRCP1 SRCP2 SRCP3 SRCP4 SRCP5 SRCP6 SRCP7 STKOV STKUN SYSCON T0 T01CON T0IC T0REL	T1 T1IC T1REL T2 T2CON T2IC T3 T3CON T3IC T4 T4CON T4IC T5 T5CON T5IC T6 T6CON T6IC TFR WDT WDTCON ZEROS

Predefined Bit Names
ADBSY ADCH ADCIE ADCIR ADEIE ADEIR ADM ADST BTYP BYT DISC CC0IE CC0IR CC10IE CC10IR CC11IE CC11IR CC12IE CC12IR CC13IE CC13IR CC14IE CC14IR CC15IE CC15IR	CC1IE CC1IR CC2IE CC2IR CC3IE CC3IR CC4IE CC4IR CC5IE CC5IR CC6IE CC6IR CC7IE CC7IR CC8IE CC8IR CC9IE CC9IR CI CLKEN CRIE CRIR E IEN ILLBUS	ILLINA ILLOPA ILVL MCTC MDRIU MTTC MULIP N NMI PRTFLT RDYEN ROMEN RWDC S0EIE S0EIR S0FE S0FEN S0M S0OE S0OEN S0PE S0PEN REN S0RIE S0RIR	S0STP S0TIE S0TIR S1EIE S1EIR S1FE S1FEN S1M S1OE S1OEN S1PE S1PEN S1REN S1RIE S1RIR S1STP S1TIE S1TIR SGTDIS STKOF STKUF T0IE T0IR T0M T0R	T1IE T1IR T1M T1R T2I T2IE T2IR T2M T2R T2UD T3I T3IE T3IR T3M T3OE T3OTL T3R T3UD T3UDE T4I T4IE T4IR T4M T4R T4UD	T5CLR T5I T5IE T5IR T5M T5R T5SC T5UD T6I T6IE T6IR T6OE T6OTL T6R T6SR T6UD UNDOPC USR0 V WDTIN WDTR WDTREL Z