Z86C61 Datasheet, PDF (21/46 Pages) Zilog, Inc. – CMOS Z8 MICROCONTROLLER

REGISTER POINTER
7654321 0
Working Register
Group Pointer
Expanded Register
Group Pointer
Z8 Reg. File
%FF
%F0
Z86C61/62/96
Z8^® MICROCONTROLLER
Z8 STANDARD CONTROL REGISTERS
REGISTER
% FF
% FE
% FD
% FC
% FB
% FA
% F9
†
% F8
% F7
% F6
% F5
% F4
% F3
% F2
% F1
% F0
SPL
SPH
RP
FLAGS
IMR
IRQ
IPR
P01M
P3M
P2M
PRE0
T0
PRE1
T1
TMR
SIO
RESET CONDITION
D7 D6 D5 D4 D3 D2 D1 D0
UUUUUU U U
UUUUUU U U
000000 0 0
UUUUUU U U
0 UUUUU U U
000000 0 0
UUUUUU U U
010011 0 1
000000 0 0
111111 1 1
UUUUUU U 0
UUUUUU U U
UUUUUU 0 0
UUUUUU U U
000000 0 0
UUUUUU U U
%7F
%0F
%00
Reserved
EXPANDED REG. GROUP (F)
REGISTER
% (F) 0F
% (F) 0E
% (F) 0D
% (F) 0C
% (F) 0B
% (F) 0A
% (F) 09
% (F) 08
% (F) 07
% (F) 06
% (F) 05
% (F) 04
% (F) 03
% (F) 02
% (F) 01
% (F) 00
Reserved
Reserved
Reserved
Reserved
Reserved
ICE
P6M
P6D
P6
P45M
P5D
P5
P4D
P4
Reserved
Reserved
RESET CONDITION
0
UU UU
UUUU UU UU
UUUU UU UU
EXPANDED REG. GROUP (0)
REGISTER
% (0) 03
P3
% (0) 02
P2
% (0) 01
P1
% (0) 00
P0
RESET CONDITION
1 1 1 1 UU U U
UU U U UU U U
UU U U UU U U
UU U U UU U U
U = Unknown
† = For Z86C96 (ROMless) Reset condition:"10110110"
Figure 20. Expanded Register File Architecture
21