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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_alu16.vhd] - Diff between revs 191 and 193
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Rev 193 |
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--
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--
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-- VHDL Units : o8_alu16
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-- VHDL Units : o8_alu16
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-- Description: Provides a mix of common 16-bit math functions to accelerate
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-- Description: Provides a mix of common 16-bit math functions to accelerate
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-- : math operations on the Open8 microprocessor core.
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-- : math operations on the Open8 microprocessor core.
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--
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--
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-- Notes : All output registers are updated by writing an instruction to
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-- Notes : All output registers are updated by writing to offset 0x1F.
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-- : offset 0x1F.
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--
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-- : The math unit is busy when the MSB of the status
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-- : The math unit is busy when the MSB of the status
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-- : register is high, and done/ready when it reads low.
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-- : register is high, and done/ready when it reads low.
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-- : Almost Equal checks to see if Addend 1 is no more, or less,
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-- : Almost Equal checks to see if Addend 1 is no more, or less,
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-- : addend 2 within the specified tolerance. For example,
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-- : addend 2 within the specified tolerance. For example,
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-- : addend_1 = 2 is almost equal to addend_2 = -1 with a
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-- : addend_1 = 2 is almost equal to addend_2 = -1 with a
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