
070223 Operations Manual SAT-520PLUS 33
Interrupt Map
No.
Address
Type
Description
0
0
CPU
Divide by Zero
1
4
CPU
Single Step
386+
Debug Exception
2
8
CPU
NMI
3
0C
CPU
Breakpoint
4
10
CPU
Overflow
5
14
BIOS
Print Screen
186+
Bounds Exception
6
18
186+
Invalid Opcode
7
1C
186+
Coprocessor unavailable
8
20
HARDWARE
IRQ 0 - 18.2Hz heartbeat
286+
LIDT - Double fault exception
9
24
HARDWARE
IRQ 1 - Keyboard
286+
Coprocessor segment
A
28
HARDWARE
IRQ 2 - Chained to slave
286+
Invalid TSS exception
B
2C
HARDWARE
IRQ 3 - COM2
286+
Segment not present
C
30
HARDWARE
IRQ 4 - COM1
286+
Stack fault exception
D
34
HARDWARE
IRQ 5
286+
Protection Fault
E
38
HARDWARE
IRQ 6 - Floppy Disk
286+
Page fault
F
3C
HARDWARE
IRQ 7 - LPT 1
10
40
BIOS
Video BIOS functions
286+
Coprocessor exception
11
44
BIOS
BIOS equipment check
486+
Alignment check exception
12
48
BIOS
BIOS memory size
P5+
Machine check
13
4C
BIOS
BIOS disk function
14
50
BIOS
BIOS serial functions
15
54
BIOS
BIOS casette/misc funtions
16
58
BIOS
BIOS keyboard functions
17
5C
BIOS
BIOS printer functions
18
60
BIOS
SROM Basic Entry (IBM)
19
64
BIOS
BIOS Boot function
1A
68
BIOS
BIOS time of day functions
1B
6C
BIOS
BIOS keyboard break
1C
70
BIOS
BIOS chained timer tick
1D
74
BIOS
BIOS video initialization
1E
78
BIOS
BIOS diskette parameter
table
1F
7C
BIOS
BIOS CGA graphics fone
20
80
MS-DOS
Program Terminate
21
84
MS-DOS
DOS function calls
22
88
MS-DOS
Terminate address
23
8C
MS-DOS
Ctrl-Break address
24
90
MS-DOS
Fatal Error vector
25
94
MS-DOS
Absolute disk read
26
98
MS-DOS
Absolute disk write
27
9C
MS-DOS
Terminate address
Содержание SAT-520PLUS
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