Reserved Symbols For Assembler; System Register (Sysreg); Data Buffer (Dbf) - NEC PD17062 Datasheet

23. RESERVED SYMBOLS FOR ASSEMBLER

The reserved PD17062 symbols for the assembler are listed below.
23.1 SYSTEM REGISTER
Symbol Attribute
MEM
AR3
MEM
AR2
MEM
AR1
MEM
AR0
MEM
WR
BANK MEM
MEM
IXH
MEM
MPH
FLG 0.7AH.3
MPE
MEM
IXM
MPL MEM
MEM
IXL
RPH MEM
MEM
RPL
PSW MEM
FLG 0.7EH.0
BCD
FLG 0.7FH.3
CMP
FLG 0.7FH.2
CY
FLG 0.7FH.1
Z
IXE FLG 0.7FH.0
23.2 DATA BUFFER
Symbol Attribute
DBF3 MEM 0.0CH
DBF2 MEM 0.0DH
DBF1 MEM 0.0EH
DBF0 MEM
282
Read/
Value
write
0.74H R Bits 15 to 12 of the address register
0.75H R Bits 11 to 8 of the address register
0.76H R/W Bits 7 to 4 of the address register
0.77H R/W Bits 3 to 0 of the address register
0.78H R/W Window register
0.79H R/W Bank register
0.7AH R Bits 10 to 8 of the index register high
0.7AH R Bits 6 to 4 of the memory pointer
R/W Memory pointer enable flag
0.7BH R/W Bits 7 to 4 of the index register
0.7BH R/W Bits 3 to 0 of the memory pointer
0.7CH R/W Bits 3 to 0 of the index register
0.7DH R Bits 6 to 3 of the register pointer
0.7EH R/W Bits 2 to 0 of the register pointer
0.7FH R/W Program status word
R/W BCD operation flag
R/W Compare flag
R/W Carry flag
R/W Zero flag
R/W Index enable flag
Read/
Value
write
R/W Bits 15 to 12 of the data buffer
R/W Bits 11 to 8 of the data buffer
R/W Bits 7 to 4 of the data buffer
0.0FH R/W Bits 3 to 0 of the data buffer
Description
Description
PD17062