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Hello everyone, in this lesson, let's take a look at the division of video memory channels of the graphics card.

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The result of the graphics card test software test is to give a channel name

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We must match the channel name with the video memory

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All the video memory of the graphics card is counted counterclockwise,

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and generally two video memories are used as one channel

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ABCD in this order

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The two memory is divided into high memory and low memory

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For N cards, generally the high-bit graphics exist in the front,

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and the low-bit graphics exist in the back.

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Then the arrangement of N card memory is A1 A0 B1 B0 C1 C0 D1 D0

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B0 C1 C0 D1 D0

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For the A card, the low-bit graphics are in the front, and the high-bit graphics are in the back.

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So the arrangement method of A card video memory is A0 A1 B0 B1 C0 C1 D0 D1

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A0 A1 B0 B1 C0 C1 D0 D1

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We should pay attention that the empty pads are also counted when the digital display is stored.

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Although it is not equipped with video memory,

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it also occupies a position and cannot be skipped directly

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At the same time, it is often found during maintenance that

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there is also a video memory on the back of the graphics card.

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When digitally displaying memory,

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it is necessary to project the memory on the reverse side to the front side to count

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If the video memory on the reverse side overlaps with the video memory on the front side,

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we can regard these two video memory as one video memory

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If they do not overlap, treat the memory on the reverse side as the memory on the front

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For example, suppose there is a video memory on the back of this position, projected to the front

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Then the location number of this video memory is B1

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The rest of the video memory and so on

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A card also has a video memory arrangement method regardless of high and low bits,

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directly ABCD arranged in the past

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We don't need to memorize the arrangement like this

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We look at the results given by the video memory test software, and we know which arrangement it is.

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This is the division of the graphics memory channel