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Tandy 1400LT - Page 272

Tandy 1400LT
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Initialization Word Format
IW1
(Initialization Word 1)
1
IW4
IW4 Write
t
Selection
I
0
I
IW4 Not Written
The Higher
3 Bits
of
the Lower Byte
of
the Interrupt Routine
i
Address
in
CALL Mode
Interrupt
Scale
T
1
I
Single Mode
0
Extended Mode
I
T
lNTP
Trigger
1
I
Level-Trigger Mode
0
Edge-Trigger Mode
I
IW2
(Initialization Word
2)
At5-Aa: Higher Byte
of
Interrupt Routine
Address in CALL Mode
V7-V3: The Higher
5
Bits
of
Interrupt
Vector Number in Vector Mode
At5-Aa:
V7-V3: The Higher
5
Bits
of
InterruDt
Higher Byte
of
Interrupt Routine
Address in CALL Mode
Vector Number in Vector Mode
I
F-3

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