PTO-TILE-MODEL-MEMORY-STRIDE

1// PTO-UNIT: {"id":"PTO-TILE-MODEL-MEMORY-STRIDE","surface":"tile","classification":["model","memory","stride"],"depends_on":["PTO-TILE-MODEL-MEMORY-ADDRESSING"]}2readonly func TileMemoryStridedIndex(row: integer {0..65535},3                                     column: integer {0..65535},4                                     row_stride_elements: Word) => Word5begin6    return MultiplyWord(NaturalToWord(row as integer {0..262144}),7                        row_stride_elements) +8           NaturalToWord(column as integer {0..262144});9end;10
11pure func TileDenseRowStrideBytes(columns: integer {0..65535},12                                  data_type: TileDataType) => Word13begin14    if TileDataTypeIsFourBit(data_type) then15        let packed_bytes = ((columns + 1) DIVRM 2) as integer {0..32768};16        return NaturalToWord(packed_bytes as integer {0..262144});17    else18        return MultiplyWord(19            NaturalToWord(columns as integer {0..262144}),20            NaturalToWord(TileElementBytes(data_type) as21                integer {0..262144}));22    end;23end;24
25readonly func TileMemoryStridedByteAddress(26    base_address: Word, row: integer {0..65535},27    column: integer {0..65535}, row_stride_bytes: Word,28    data_type: TileDataType) => Word29begin30    let row_base = base_address + MultiplyWord(31        NaturalToWord(row as integer {0..262144}), row_stride_bytes);32    if TileDataTypeIsFourBit(data_type) then33        return row_base + NaturalToWord(34            (column DIVRM 2) as integer {0..262144});35    else36        return row_base + MultiplyWord(37            NaturalToWord(column as integer {0..262144}),38            NaturalToWord(TileElementBytes(data_type) as39                integer {0..262144}));40    end;41end;42
43pure func TileMemoryStridedByteHighNibble(44    column: integer {0..65535}, data_type: TileDataType) => boolean45begin46    return TileDataTypeIsFourBit(data_type) && column MOD 2 == 1;47end;48