P C I N T E R R U P T V E C T O R T A B L E

Memory Location(s) Int# Description

0000:0000 - 0003 0 Divide by zero

0000:0004 - 0007 1 Single step

0000:0008 - 000B 2 Non-Maskable Interrupt

0000:000C - 000F 3 Break point instruction

0000:0010 - 0013 4 Overflow

0000:0014 - 0017 5 Print screen

0000:0018 - 001B 6 Reserved

0000:001C - 001F 7 Reserved

0000:0020 - 0023 8 Timer (18.2Hz) IRQ0

0000:0024 - 0027 9 Keyboard IRQ1

0000:0028 - 002B A Reserved IRQ2

0000:002C - 002F B Reserved for communications IRQ3

0000:0030 - 0033 C Reserved for communications IRQ4

0000:0034 - 0037 D Fixed Disk IRQ5

0000:0038 - 003B E Diskette IRQ6

0000:003C - 003F F Reserved for printer IRQ7

0000:0040 - 0043 10 Video I/O

0000:0044 - 0047 11 Equipment check (configuration

0000:0048 - 004B 12 Memory check (configuration)

0000:004C - 004F 13 Diskette I/O (Fixed Disk XT)

0000:0050 - 0053 14 RS232 I/O

0000:0054 - 0057 15 Casette I/O

0000:0058 - 005B 16 Keyboard I/O

0000:005C - 005F 17 Printer I/O

0000:0060 - 0063 18 ROM BASIC

0000:0064 - 0067 19 Bootstrap

0000:0068 - 006B 1A Time of day

0000:006C - 006F 1B Ctrl-Break control

0000:0070 - 0073 1C Timer control

0000:0074 - 0077 1D Video initialization

0000:0078 - 007B 1E Disk parameter table pointer

0000:007C - 007F 1F Graphics charactertable pointr

0000:0080 - 0083 20 DOS program terminate

0000:0084 - 0087 21 DOS function call

0000:0088 - 008B 22 DOS terminate address

0000:008C - 008F 23 DOS Ctrl-Break exit address

0000:0090 - 0093 24 DOS fatal error address

0000:0094 - 0097 25 DOS absolut disk read

0000:0098 - 009B 26 DOS absolut disk write

0000:009C - 009F 27 DOS terminate, stay resident

0000:00A0 - 00FF 28-3F Reserved for DOS

0000:0100 - 0103 40 Diskette I/O XT

0000:0104 - 0107 41 Fixed Disk parameters

0000:0108 - 017F 42-5F Reserved

0000:01B0 - 019F 60-67 User defined interrupts

0000:01A0 - 01FF 68-7F Not used

0000:0200 - 0217 80-85 Reserved for BASIC

0000:0218 - 03C3 86-F0 BASIC interpreter

0000:03C4 - 03FF F1-FF Not used