• IN instruction
  
• OUT instruction
  

Coding:

bin:				MOD	1010	PRT	OP2

hex:				MOD	A	PRT	OP2

(MOD - modifier: affects on operands type - word/byte; PRT - port number, OP2 - destination operand)

Description:
PRT ==> OP2
This instruction gets a value from specifid port and write the result to OP2.

Examples:

0A10

port 1 ==> R0

port 1 value will be stoped to R0

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OUT instruction

Coding:

bin:				MOD	1011	OP1	PRT

hex:				MOD	B	OP1	PRT

(MOD - modifier: affects on operands type - word/byte, or maybe specifies "short constant"; OP1 - cource operand, PRT - port number)

Description:
OP1 ==> PRT
This instruction gets a value of OP1 and places it to specified port.

Examples:

0B03	R0 ==> port 3	R0 value will be put to port 3
08D3 0020	20 ==> port 3	this operation will put specified constant to port 3

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