What was the first Intel x86 processor with “Base + Index * Scale + Displacement” addressing mode?
Multi tool use
As the title says, what's the first x86 processor from Intel that supports the following addressing mode?
mov %reg, 8(base, index, 4)
^^^^^^^^^^^^^^^^^
where the content of %reg will be stored to the address base + 4*index + 8 (both base and index are registers).
I only know that 8086 doesn't support this and 80586 supports this. I'm guessing it's 80386 because it's the first 32-bit x86 Intel CPU?
intel x86
asked Apr 27 at 12:40
iBugiBug
1273
add a comment |
As the title says, what's the first x86 processor from Intel that supports the following addressing mode?
mov %reg, 8(base, index, 4)
^^^^^^^^^^^^^^^^^
where the content of %reg will be stored to the address base + 4*index + 8 (both base and index are registers).
I only know that 8086 doesn't support this and 80586 supports this. I'm guessing it's 80386 because it's the first 32-bit x86 Intel CPU?
intel x86
asked Apr 27 at 12:40
iBugiBug
1273
1
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18
add a comment |
As the title says, what's the first x86 processor from Intel that supports the following addressing mode?
mov %reg, 8(base, index, 4)
^^^^^^^^^^^^^^^^^
where the content of %reg will be stored to the address base + 4*index + 8 (both base and index are registers).
I only know that 8086 doesn't support this and 80586 supports this. I'm guessing it's 80386 because it's the first 32-bit x86 Intel CPU?
intel x86
asked Apr 27 at 12:40
iBugiBug
1273
As the title says, what's the first x86 processor from Intel that supports the following addressing mode?
mov %reg, 8(base, index, 4)
^^^^^^^^^^^^^^^^^
where the content of %reg will be stored to the address base + 4*index + 8 (both base and index are registers).
I only know that 8086 doesn't support this and 80586 supports this. I'm guessing it's 80386 because it's the first 32-bit x86 Intel CPU?
intel x86
intel x86
asked Apr 27 at 12:40
iBugiBug
1273
asked Apr 27 at 12:40
iBugiBug
1273
asked Apr 27 at 12:40
iBugiBug
1273
asked Apr 27 at 12:40
iBugiBug
1273
asked Apr 27 at 12:40
iBugiBug
1273
1273
1
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18
add a comment |
1
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18
1
1
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18
add a comment |
1 Answer
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This addressing mode was introduced with the first 32-bit x86 processor, i.e. the 80386.
Ref: 80386 Programmer's reference manual sec 2.5.3.2.
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
add a comment |
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This addressing mode was introduced with the first 32-bit x86 processor, i.e. the 80386.
Ref: 80386 Programmer's reference manual sec 2.5.3.2.
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
add a comment |
This addressing mode was introduced with the first 32-bit x86 processor, i.e. the 80386.
Ref: 80386 Programmer's reference manual sec 2.5.3.2.
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
add a comment |
This addressing mode was introduced with the first 32-bit x86 processor, i.e. the 80386.
Ref: 80386 Programmer's reference manual sec 2.5.3.2.
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
This addressing mode was introduced with the first 32-bit x86 processor, i.e. the 80386.
Ref: 80386 Programmer's reference manual sec 2.5.3.2.
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
answered Apr 27 at 13:01
alephzeroalephzero
2,6461917
2,6461917
add a comment |
add a comment |
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lo2ank1DK7,knMH7vpoA3bl9
1
Downvote button says "This question does not show any research effort" so that's what I'm clicking. Stack Exchange is not supposed to be the first stop.
– pipe
Apr 28 at 0:18