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INTERRUPT JUMP TABLE
Each entry has 3 bytes
so that a jump can be placed there. By default all are set to hex 0A (Return
from Exception) except the four noted with
� . The word +ORIGIN is used in software in
preference to an absolute address so that the correct value will be returned on
either the normal TDS2020F or with
the TDS2020DV and Forth version 4.xxDV:
|
-114 +ORIGIN
|
gives hex 8812 on Forth version 4.xx
|
|
|
-114 +ORIGIN
|
gives hex 4012
on Forth version 4.xxDV
|
|
|
|
|
|
+ORIGIN
|
|
V4.xxDV
|
V4.xx
|
Function
|
|
|
-132
|
|
4000
|
8800
|
Not presently used
|
|
|
-129
|
�
|
4003
|
8803
|
Invalid instruction
|
|
|
-126
|
|
4006
|
8806
|
Divide by 0 (DIVXU,)
|
|
|
-123
|
|
4009
|
8809
|
Trap on overflow (TRAP/VS,)
|
|
|
-120
|
�
|
400C
|
880C
|
Address error
|
|
|
-117
|
|
400F
|
880F
|
Trace
|
|
|
-114
|
|
4012
|
8812
|
Unidentified NMI
|
|
|
-111
|
|
4015
|
8815
|
Trap 0 (TRAPA # 0)
|
|
|
-108
|
|
4018
|
8818
|
Trap 1 (TRAPA # 1)
|
|
|
-105
|
|
401B
|
881B
|
Trap 2 (TRAPA # 2)
|
|
|
-102
|
|
401E
|
881E
|
Trap 3 (TRAPA # 3)
|
|
|
-99
|
|
4021
|
8821
|
Trap 4 (TRAPA # 4)
|
|
|
-96
|
|
4024
|
8824
|
Trap 5 (TRAPA # 5)
|
|
|
-93
|
|
4027
|
8827
|
Trap 6 (TRAPA # 6)
|
|
|
-90
|
|
402A
|
882A
|
Trap 7 (TRAPA # 7)
|
|
|
-87
|
|
402D
|
882D
|
Trap 8 (TRAPA # 8)
|
|
|
-84
|
|
4030
|
8830
|
Trap 9 (TRAPA # 9)
|
|
|
-81
|
|
4033
|
8833
|
Trap 10 (TRAPA #10)
|
|
|
-78
|
|
4036
|
8836
|
Trap 11 (TRAPA #11)
|
|
|
-75
|
|
4039
|
8839
|
Trap 12 (TRAPA #12)
|
|
|
-72
|
|
403C
|
883C
|
Trap 13 (TRAPA #13)
|
]
|
|
-69
|
|
403F
|
883F
|
Trap 14 (TRAPA #14)
|
] Multitasker
|
|
-66
|
|
4042
|
8842
|
Trap 15 (TRAPA #15)
|
]
|
|
-63
|
|
4045
|
8845
|
IRQ0
|
|
|
-60
|
|
4048
|
8848
|
IRQ1
|
|
|
-57
|
|
404B
|
884B
|
FTR1 ICI
|
]
|
|
-54
|
|
404E
|
884E
|
FRT1 OCIA
|
] Timer 1
|
|
-51
|
|
4051
|
8851
|
FRT1 OCIB
|
]
|
|
-48
|
|
4054
|
8854
|
FRT1 FOVI
|
]
|
|
-45
|
|
4057
|
8857
|
FTR2 ICI
|
]
|
|
-42
|
|
405A
|
885A
|
FRT2 OCIA
|
] Timer 2
|
|
-39
|
|
405D
|
885D
|
FRT2 OCIB
|
]
|
|
-36
|
|
4060
|
8860
|
FRT2 FOVI
|
]
|
|
-33
|
|
4063
|
8863
|
FTR3 ICI
|
]
|
|
-30
|
|
4066
|
8866
|
FRT3 OCIA
|
] Timer 3
|
|
-27
|
|
4069
|
8869
|
FRT3 OCIB
|
]
|
|
-24
|
�
|
406C
|
886C
|
FRT3 FOVI
|
]
|
|
-21
|
|
406F
|
886F
|
CMIA
|
]
|
|
-18
|
|
4072
|
8872
|
CMIB
|
] 8-bit timer
|
|
-15
|
|
4075
|
8875
|
OVI
|
]
|
|
-12
|
|
4078
|
8878
|
ERI
|
] SCI
|
|
-9
|
|
407B
|
887B
|
RXI
|
]
|
|
-6
|
|
407E
|
887E
|
TXI
|
|
|
-3
|
|
4081
|
8881
|
A/D
|
|
+1
|
�
|
4085
|
8885
|
Internal watchdog
|
|
|
