IBM RT Series Hardware Reference Manual page 345

TNL SN20-9844 (March 1987) to 75X0235
Bits
Logic Function
12-15 (Subtype)
0
Set all bits to
.0.
1
+
Operand A and
+
Operand B
2
+
Operand A and -Operand B
3 Pass through Operand A
4
All zero's
5
+
Operand A and
+
Operand B
6
+
Operand A and -Operand B
7 Pass through Operand A
8 -Operand A and
+
Operand B
9 Pass through Operand B (test)
A
+
Operand A xor
+
Operand B
B
+
Operand A or
+
Operand B
C -Operand A or
+
Operand B
D Pass through Operand B (test)
E -Operand A or -Operand B
F
Set all bits to 1.
Figure 21. Graphic Operation Functions
Extended Monochrome Graphics Adapter 33