- the i286 architecture, the
register is 16 bits wide. Its successors, the
EFLAGS and
RFLAGS registers (in
modern x86-64), are 32 bits and 64 bits wide, respectively...
-
publishes a bi-annual journal, Flagmaster, and a
virtual magazine called eFlags.
Since 2006 it has
sponsored an
annual public lecture on a flag-related...
-
system BIOSes. On some
NexGen CPUs that do
support CPUID,
EFLAGS.ID is not
supported but
EFLAGS.AC is,
complicating CPU detection.
Unlike the
older CMPXCHG...
- can be
temporarily disabled for
explicit memory accesses by
setting the
EFLAGS.AC (Alignment Check) flag. The stac (Set AC Flag) and clac (Clear AC Flag)...
- (Primary storage)
Control registers Instruction flag
registers (such as
EFLAGS in x86)
Interrupt mask
registers Memory management unit
registers Status...
-
Status register 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 (bit position) V R 0 N IOPL O D I T S Z 0 A 0 P 1 C
EFlags...
- PUSHF/POPF/STI/CLI/INT/IRET
instructions will
treat the
value of VIF in the real 32-bit
EFLAGS register as the
value of IF in the
simulated 16-bit
FLAGS register (32-bit...
-
Status register 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 (bit position) V R 0 N IOPL O D I T S Z 0 A 0 P 1 C
EFlags...
-
Detected (see also DR7, bit 13). 14 BS Single-Step
execution (enabled by
EFLAGS.TF) 15 BT Task
Switch breakpoint.
Occurs when a task
switch is done with...
- is 0 18 AM
Alignment mask
Alignment check enabled if AM set, AC flag (in
EFLAGS register) set, and
privilege level is 3 29 NW Not-write
through Globally...
