8086
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8088
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The instruction Queue is 6 byte long.
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The instruction Queue is 4 byte long.
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In 8086, memory divides into two banks
-even or lower bank
-odd or higher bank
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The memory in 8088 does not divide into two banks.
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The data bus of 8086 is 16-bit wide
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The data bus of 8088 is 8-bit wide.
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It has BHE (bar) signal on pin no. 34 & there is no SSO
(bar) signal.
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It does not have BHE (bar) signal on pin no. 34 & has
only SSO (bar) signal. It has no S7 pin.
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Control pin in 8086 is M/IO (bar).
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It needs one machine cycle to R/W signal if it is at even
location otherwise it needs two.
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It needs one machine cycle to R/W signal if it is at even
location otherwise it needs two.
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In
8086, all address & data Buses are multiplexed.
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In 8088, address bus; AD7- AD0 buses
are multiplexed.
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It needs two IC 74343 for de-multiplexing AD0-AD19.
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It needs one IC 74343 for de-multiplexing AD0-AD7.
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Maximum supply current 360mA.
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Maximum supply current 340mA.
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Three clock speed: 5, 8, 10 MHz
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Two clock speed: 5, 8 MHz
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