Chapter 4 CPU Specifications
XBC E-Type Main Unit
4-15
Ver. 1
b. Word device: takes 4 or 8 bits from word device’s bit contact used as operand. When
specified bit contact is used as the source and 4 or 8 bits is taken from specified
contact, the bit which exceeds the applicable word unit will be processed as 0. Like
above, if specified bit contact is used as the destination, the data exceeding the word
will be lost.
MOV
8
The operand with 4 or 8
attached at the back of
instruction will be Nibble
and Byte data.
D00010.C
D00100.4
D00100
(WORD)
D00010
(WORD)
b15
b0
b4
b15
b0
b4
D00010.C
’
Byte data
If the bit
’
s position is C with Byte data to
take the upper 4 bits will be processed
as 0 since exceeding the word range.
0 0 0 0
4.6.4 Word data (Word)
Word data is 16-bit numeric data. It can be expressed in decimal and hexadecimal. If data is to be expressed in
hexadecimal, H should be added in front of the number.
· Decimal: -32,768 ~ 32,767 (Signed operation) or 0 ~ 65,535 (Unsigned operation)
· Hexadecimal: H0 ~ HFFFF
Word data can be expressed in word device or bit device.
1. Word device
Word device is specified in 1 word unit.
Remark
1) Since T and C are used as bit or word data based on the instruction applied they cannot be used in nibble & byte
instructions.
P00010
MOV D10 D20
1 word such as D10, D20 is the object
Summary of Contents for XBC-DN10E
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