NEC PD754244 Network Card User Manual


 
CHAPTER 4 INTERNAL CPU FUNCTION
64 Users Manual U10676EJ3V0UM
Figure 4-3. Program Memory Map
76 0
MBE RBE Internal reset start address (higher 4 bits)
Internal reset start address (lower 8 bits)
MBE RBE INTBT start address (higher 4 bits)
INTBT start address (lower 8 bits)
MBE RBE INT0 start address (higher 4 bits)
INT0 start address (lower 8 bits)
MBE RBE INTT0 start address (higher 4 bits)
INTT0 start address (lower 8 bits)
MBE RBE INTT1/INTT2 start address (higher 4 bits)
INTT1/INTT2 start address (lower 8 bits)
MBE RBE INTEE start address (higher 4 bits)
INTEE start address (lower 8 bits)
GET instruction reference table
0000H
0001H
0002H
0003H
0004H
0005H
0006H
0007H
0008H
0009H
000AH
000BH
000CH
000DH
000EH
000FH
0020H
007FH
0080H
07FFH
0800H
0FFFH
CALLF !faddr instruction
entry address
Branch address of
BR !addr
BRCB !caddr
BR BCDE
BR BCXA
BRA !addr1
Note
CALL !addr
CALLA !addr1
Note
instructions
GETI Branch/call
Addresses
BR $addr instruction
relative branch address
(15 to 1, +2 to +16)
Address 5
0
0
0
0
0
0
4
0
0
0
0
0
0
Note Can be used in the MkII mode only.
Remark In addition to the above, a branch can be made to an address with the lower 8-bits only of the PC changed
by means of a BR PCDE or BR PCXA instruction.