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Address bits
23-0
PC Mapper output
0003C4H INT #F1-FF USER PROGRAMS
000200H INT #80-F0 BASIC
0001E0H INT #78-7F USER PROGRAMS
0001DCH INT #77 IRQ15
0001D8H INT #76 IRQ14
0001D4H INT #75 IRQ13
0001D0H INT #74 IRQ12
0001CCH INT #73 IRQ11
0001C8H INT #72 IRQ10
0001C4H INT #71 IRQ9
0001C0H INT #70 IRQ8
0001A0H INT #68-6F RESERVED
00019CH INT #67 EXP MEM MANG
000180H INT #60-66 USER PROGRAMS
00012CH INT #4B-5F RESERVED
000128H INT #4A USER RTC ALARM
00011CH INT #47-49 RESERVED
000118H INT #46 HD DISK #1 PARAM
000110H INT #44-45 RESERVED
00010CH INT #43 VIDEO CHAR TABLE
000108H INT #42 EGA BIOS
000104H INT #41 HD DISK #0 PARAM
000100H INT #40 FLOPPY DISK ISR
000080H INT #20-3F RESERVED DOS
00007CH INT #1F VIDEO CHAR TABLE
000078H INT #1E FLOPPY PARAMS
000074H INT #1D AVAILABLE
000070H INT #1C AVAILABLE
00006CH INT #1B KEYBOARD BREAK
000068H INT #1A RTC ISR
000064H INT #19 BOOSTRAP LOADER
000060H INT #18 ROM BASIC
00005CH INT #17 LPT PRINTER BIOS
000058H INT #16 KEYBOARD BIOS
000054H INT #15 SYS SERVICE BIOS
000050H INT #14 SERIAL PORT BIOS
00004CH INT #13 FLOPPY DISK BIOS
000048H INT #12 MEM SIZE INT
000044H INT #11 EQUIP LIST
000040H INT #10 VIDEO BIOS
00003CH INT #0F IRQ7 LPT1
000038H INT #0E IRQ6 FLOPPY DISK
000034H INT #0D IRQ5 LPT2
000030H INT #0C IRQ4 SERIAL #1
00002CH INT #0B IRQ3 SERIAL #2
000028H INT #0A IRQ2 SLAVE INT
000024H INT #09 KEYBOARD
000020H INT #08 IRQ0 SYS TIMER
00001CH INT #07 NUM COPROCESSOR
000018H INT #06 INVALID OPCODE
000014H INT #05 PRINT SCREEN
000010H INT #04 OVERFLOW DETECT
00000CH INT #03 BREAKPOINT TRACE
Interrupt Vector
Table
28