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Microarchitectures: Difference between revisions
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! ALU bits | ! ALU bits | ||
! Addr bits | ! Addr bits | ||
! New instructions | |||
! Notes | |||
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| 8086 | | 8086 | ||
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| 16 | | 16 | ||
| 20 | | 20 | ||
| x86-16 | |||
| Segmented memory | |||
Optional 80-bit 8087 FP coprocessor | |||
|- | |||
| 80186 | |||
| Intel | |||
| 2.6 μm | |||
| 16 | |||
| 20 | |||
| 8086-2 (ENTER/LEAVE, PUSHA/POPA, INS/OUTS) | |||
| Designed for embedded systems (clock, PIC, DMA on-die) | |||
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|} | |} | ||
[[CATEGORY: Hardware]] | |||
[[CATEGORY: x86]] | |||
Revision as of 16:35, 20 January 2011
Microarchitecture is defined as those elements of a CPU design which are, to first order, invisible to application programmers (ie, not part of the instruction set). Those elements which are visible comprise the architecture.
x86 μarchitectures
| Microarchitecture | Maker | Process (min) | ALU bits | Addr bits | New instructions | Notes |
|---|---|---|---|---|---|---|
| 8086 | Intel | 3.2 μm | 16 | 20 | x86-16 | Segmented memory
Optional 80-bit 8087 FP coprocessor |
| 80186 | Intel | 2.6 μm | 16 | 20 | 8086-2 (ENTER/LEAVE, PUSHA/POPA, INS/OUTS) | Designed for embedded systems (clock, PIC, DMA on-die) |
