S5U1C62000A MANUAL
EPSON
59
(S1C60/62 FAMILY ASSEMBLER PACKAGE)
CHAPTER 5: ASSEMBLER
Relational operators
Examples
Old operators
==
Equal
SW==0
EQ
!=
Not equal
SW!=0
NE
<
Less than
ABC<5
LT
<=
Less than or equal
ABC<=5
LE
>
Greater than
ABC>5
GT
>=
Greater than or equal
ABC>=5
GE
&&
AND
ABC&&0xf
not available
||
OR
ABC||0b1010
not available
The relational operator returns 1 if the expression is true, otherwise it returns 0.
Priority
The operators have the priority shown below. If there are two or more operators with the same
priority in an expression, the assembler calculates the expression from the left.
1. + (plus sign), - (minus sign)
High priority
2. ^h, ^l, ~
↑
3. (
4.
*
, /, %, <<, >>
5. + (addition), - (subtraction)
6. ==, !=, <, <=, >, >=
7. &
8. |, ^
9. &&
10. ||
↓
11. )
Low priority
Examples
#define BLK_START
0x0
#define BLK_SIZE
16
#define BLK_END
BLBLK_SIZE-1
#define INIT_DATA 0xaa
:
LOOP:
ld
a,BLK_START^h>>4&0xf
ld
xh,a
ld
b,BLK_START^l&0xf
ld
xl,b
ldpx mx,(((INIT_DATA&0x80)!=0)*2+INIT_DATA)>>4&0xf
ldpx mx,(((INIT_DATA&0x80)!=0)*2+INIT_DATA)&0xf
cp
a,BLK_END>>4&0xf
JP
NZ,LOOP
cp
b,BLK_END&0xf
JP
NZ,LOOP
Compatibility with the older tools
The assembler supports the old-type operators for the asm62XX shown in "Types of operators".
They have the same priority as the corresponding new-type operators. Consequently, it is possible to
use sources created for the older tools.
The old-type operators are converted into the new format in the preprocessing stage.
