Specifications

S1C6S2N7 TECHNICAL SOFTWARE EPSON II-19
CHAPTER 3: PERIPHERAL CIRCUITS (Output Ports)
• Bit-unit operation of output ports
Label Mnemonic/operand Comment
LD Y,0F3H ;Set address of port
OR MY,0010B ;Set R01 to 1
AND MY,1011B ;Set R02 to 0
The three instruction steps above cause the output port to
be set, as shown in Figure 3.2.2.
Fig. 3.2.2
Setting of the output port
R03 R02 R01 R00
No change
Sets "1"
Sets "0"
No change
Address 0F3H
D3 D2 D1 D0