Intel Quark SoC X1000 Core Developer's Manual page 282

Table 93. I/O Instructions Clock Count Summary (Sheet 2 of 2)
Instruction
Variable Port
INS = Input Byte/Word from DX Port
OUTS = Output Byte/Word to DX Port
REP INS = Input String
REP OUTS = Output String
Notes:
1. Two clock cache miss penalty in all cases.
2. c = count in CX or ECX.
3. Cache miss penalty in all modes: Add two clocks for every 16 bytes. Entire penalty on second
operation.
®
Intel Quark SoC X1000 Core
Developer's Manual
282
Format
1110 110w
0110 110w
0110 111w
1111 0010 : 0110 110w
1111 0010 : 0110 111w
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Intel Quark Core—Instruction Set Summary
Protected Protected
Real
Mode Mode
Mode
(CPL≤IOPL) (CPL>IOPL)
16 10
17 10
17 10
16+8c 10+8c 30+8c
17+5c 11+5c 31+5c
Order Number: 329679-001US
Virtual
86 Notes
Mode
30 29
32 30
32 30 1
29+8c 2
30+5c 3
October 2013