Tandy 1400LT - Page 274

Command Word Format
IMW (Interrupt Mask Word)
Mi Me M5 M4
M3
MZ Mi MO
PFCW (Priority Finish and Control Word)
1
101
Polling Command
D7 De
Ds D4 D3 DZ Di Do
1117
0
No Level Without Rotation Normal FI Command
Normal Rotation
FI Command
Designation
With Rotation
Without Rotation Specific
FI Command
No Operation
Rotation and
MCW (Mode Control Word)
Aa
101
D7 De D5 D4
D3 Dz Di Do
X I SNM I EXCN I
0 I 1 I POL I
SR I IS/m I
0 X No Operation
1 1 IRR Select
F-5