Filter
Top Products
Instruction Descriptions 4–87
Table 4–13: VAX Floating-Point Function Field Bit Summary
Bits Field Meaning
15–13 TRP Trapping modes:
12–11 RND Rounding modes:
10–9 SRC
Source datatype:
†
Contents Meaning for Opcodes 14
16
and 15
16
000 Imprecise (default)
001 Underflow enable (/U) – floating-point output
Integer overflow enable (/V) – integer output
010 UNPREDICTABLE for opcode 15
16
instructions
Reserved for opcode 14
16
instructions
011 UNPREDICTABLE for opcode 15
16
instructions
Reserved for opcode 14
16
instructions
100 /S – Exception completion enable
101 /SU – floating-point output
/SV – integer output
110 UNPREDICTABLE for opcode 15
16
instructions
Reserved for opcode 14
16
instructions
111 UNPREDICTABLE for opcode 15
16
instructions
Reserved for opcode 14
16
instructions
Contents Meaning for Opcodes 15
16
and 14
16
00 Chopped (/C)
01 UNPREDICTABLE
10 Normal (default)
11 UNPREDICTABLE
Contents Meaning for Opcode 15
16
Meaning for Opcode 14
16
00 F_floating F_floating
01 D_floating F_floating
10 G_floating G_floating
11 Q_fixed Reserved