Digital Equipment DECstation 5000/100 Series, Maintenance Manual

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Table E-3. Exception Codes
Number Mnemonic Description
0 Int Interrupt
1 Mod TLB modification exception
2 TLBL TLB miss exception (load or instruction
fetch)
3 TLBS TLB miss exception (store)
4 AdEL Address error exception (load or instruction
fetch)
5 AdES Address error exception (store)
6 IBE Bus error exception (instruction fetch)
7 DBE Bus error exception (data reference: load or
store)
8 Sys Syscall exception
9 Bp Breakpoint exception
10 RI Reserved instruction exception
11 CpU Coprocessor unusable exception
12 OV Arithmetic overflow exception
13-31 reserved
CPU and System Registers E–5