Rainbow Electronics AT90LS8535 - Manual (Page 14)

14
AT90S/LS8535
1041H–11/01
Data Indirect with Pre-
decrement Figure 15. Data Indirect Addressing with Pre-decrement
The X-, Y-, or the Z-register is decremented before the operation. Operand address is
the decremented contents of the X-, Y-, or the Z-register.
Data Indirect with Post-
increment Figure 16. Data Indirect Addressing with Post-increment
The X-, Y-, or the Z-register is incremented after the operation. Operand address is the
content of the X-, Y-, or the Z-register prior to incrementing.
Constant Addressing Using
the LPM Instruction Figure 17. Code Memory Constant Addressing
Constant byte address is specified by the Z-register contents. The 15 MSBs select word
address (0 - 4K), the LSB selects low byte if cleared (LSB = 0) or high byte if set (LSB =
1).
Data Space
$0000
$025F
X, Y OR Z - REGISTER
0 15
-1
Data Space
$0000
$025F
X, Y OR Z - REGISTER
0 15
1
$FFF