Z86E3016PSG Datasheet, PDF (35/348 Pages) Zilog, Inc. – Z86E3016PSG

Z8 CPU
User Manual
17
The value of the lower nibble in the Register Pointer (FDh) corresponds to
the ERF Bank identification. Table 4 shows the lower nibble value and the
register file assigned to it.
Table 4. ERF Bank Address
Register
Pointer (FDh)
Low Nibble
Hex _{Register File}
0000b
0 Z8 Standard Register File.*
0001b
1 Expanded Register File Bank 1.
0010b
2 Expanded Register File Bank 2.
0011b
3 Expanded Register File Bank 3..
0100b
4 Expanded Register File Bank 4
0101b
5 Expanded Register File Bank 5..
0110b
6 Expanded Register File Bank 6
0111b
7 Expanded Register File Bank 7..
1000b
8 Expanded Register File Bank 8
1001b
9 Expanded Register File Bank 9..
1010b
A Expanded Register File Bank A
1011b
B Expanded Register File Bank B.
1100b
C Expanded Register File Bank C.
1101b
D Expanded Register File Bank D..
1110b
E Expanded Register File Bank E
1111b
F Expanded Register File Bank F.
*Note: the Z8^® Standard Register File is equivalent to Expanded Register File Bank 0.
UM001602-0904
Address Space