IBM 3278 Technical Reference page 21

Coaxial
Frame Bits
Commands 56789
Spare
1 1 001
Spare
1 1 0 1 1
Spare
1 1 1
o
1
Spare
1 1 1 1 1
WRITE Reserved
00000
Reset
00010
Load Address Counter High
o
0 1
o
0
Clear
00110
Spare
o
1
o
0 0
Load Control Register
o
1 010
Write Data
o
1 1
o
0
Insert Byte
o
1 1 1 0
Search Forward
1 000 0
Search Backward
10010
Load Address Counter Low
10100
Load Mask
1 0 1 1 0
Spare
1 100 0
Spare
1 1 010
Spare
1 1 100
Escape
1 1 1 1 0
(Part 2 of 2) Accepted Commands
1-13