ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 125

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

PS024410-0108
Bit
Position Value Description
[1]
[0]
Condition Codes
0
1
0
1
Table 57. Condition Codes
Binary Hex
0000
0001
0010
0011
0100
0101
0110
0110
0111
0111
1000
1001
1010
The C, Z, S and V Flags control the operation of the conditional jump (JP cc and JR cc)
instructions. Sixteen frequently useful functions of the Flag settings are encoded in a 4-bit
field called the condition code (cc).
binary condition codes can be created using more than one assembly code mnemonic. The
result of the Flag test operation determines if the conditional jump executes.
User Flag 1 (F1)
Available to software for use as a general-purpose bit.
Bit Clear
Bit Set
User Flag 2 (F2)
Available to software for use as a general-purpose bit.
Bit Clear
Bit Set
0
1
2
3
4
5
6
6
7
7
8
9
A
Assembly
Mnemonic Definition
F
LT
LE
ULE
OV
Ml
Z
EQ
C
ULT
T (or blank) Always True
GE
GT
P R E L I M I N A R Y
Always False
Less Than
Less Than or Equal
Unsigned Less Than or
Equal
Overflow
Minus
Zero
Equal
Carry
Unsigned Less Than
Greater Than or Equal (S XOR V) = 0
Greater Than
Table 57
summarizes the condition codes. Some
Flag Test Operation
–
(S XOR V) = 1
(Z OR (S XOR V)) = 1
(C OR Z) = 1
V = 1
S = 1
Z = 1
Z = 1
C = 1
C = 1
–
(Z OR (S XOR V)) = 0
Z8 LXM CPU Programming Summary
Product Specification
ZLP12840 OTP MCU
119