Document the slots. #387
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Document the slots. #387
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In the GW5A series, some fairly large functional blocks are located outside the main grid—that is, the grid has wires for pins, almost always scattered across several cells, but there are no functional fuses—these fuses are installed in special blocks (slots) that are not geometrically related to the main grid. Fuses are described in tables with types >1024, although there are naturally no tiles of this type, since there is no place for them in the main grid. Each slot has a unique number that determines which primitive is located in it. In fact, it is quite easy to determine the purpose of the slots—the output file contains blocks describing the slots used. So, if the lower left PLL is used (Gowin IDE allows you to specify the desired location of primitives), then the output file will contain a section describing slot number 6. Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
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In the GW5A series, some fairly large functional blocks are located outside the main grid—that is, the grid has wires for pins, almost always scattered across several cells, but there are no functional fuses—these fuses are installed in special blocks (slots) that are not geometrically related to the main grid.
Fuses are described in tables with types >1024, although there are naturally no tiles of this type, since there is no place for them in the main grid.
Each slot has a unique number that determines which primitive is located in it.
In fact, it is quite easy to determine the purpose of the slots—the output file contains blocks describing the slots used. So, if the lower left PLL is used (Gowin IDE allows you to specify the desired location of primitives), then the output file will contain a section describing slot number 6.