| Line 4... |
Line 4... |
-- # This processor module instantiates the "neoTRNG" true random number generator. #
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-- # This processor module instantiates the "neoTRNG" true random number generator. #
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-- # See the neoTRNG's documentation for more information: https://github.com/stnolting/neoTRNG #
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-- # See the neoTRNG's documentation for more information: https://github.com/stnolting/neoTRNG #
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-- # ********************************************************************************************* #
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-- # ********************************************************************************************* #
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-- # BSD 3-Clause License #
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-- # BSD 3-Clause License #
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-- # #
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-- # #
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-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. #
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-- # Copyright (c) 2022, Stephan Nolting. All rights reserved. #
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-- # #
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-- # #
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-- # Redistribution and use in source and binary forms, with or without modification, are #
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-- # Redistribution and use in source and binary forms, with or without modification, are #
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-- # permitted provided that the following conditions are met: #
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-- # permitted provided that the following conditions are met: #
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-- # #
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-- # #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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| Line 196... |
Line 196... |
-- # #
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-- # #
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-- # See the neoTRNG's documentation for more information: https://github.com/stnolting/neoTRNG #
|
-- # See the neoTRNG's documentation for more information: https://github.com/stnolting/neoTRNG #
|
-- # ********************************************************************************************* #
|
-- # ********************************************************************************************* #
|
-- # BSD 3-Clause License #
|
-- # BSD 3-Clause License #
|
-- # #
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-- # #
|
-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. #
|
-- # Copyright (c) 2022, Stephan Nolting. All rights reserved. #
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-- # #
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-- # #
|
-- # Redistribution and use in source and binary forms, with or without modification, are #
|
-- # Redistribution and use in source and binary forms, with or without modification, are #
|
-- # permitted provided that the following conditions are met: #
|
-- # permitted provided that the following conditions are met: #
|
-- # #
|
-- # #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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| Line 387... |
Line 387... |
-- sample shift register --
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-- sample shift register --
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if (deb.valid = '1') then
|
if (deb.valid = '1') then
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ctrl.sreg <= ctrl.sreg(ctrl.sreg'left-1 downto 0) & deb.data;
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ctrl.sreg <= ctrl.sreg(ctrl.sreg'left-1 downto 0) & deb.data;
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end if;
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end if;
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|
|
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-- data valid? --
|
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if (ctrl.cnt = "000") and (ctrl.run = '1') and (deb.valid = '1') then
|
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valid_o <= '1';
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else
|
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valid_o <= '0';
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end if;
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end if;
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end if;
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end process control_unit;
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end process control_unit;
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|
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-- random byte output --
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-- random byte output --
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data_o <= ctrl.sreg;
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data_o <= ctrl.sreg;
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|
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-- data valid? --
|
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valid_o <= '1' when (ctrl.cnt = "000") and (ctrl.run = '1') else '0';
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|
|
|
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end neoTRNG_rtl;
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end neoTRNG_rtl;
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-- ############################################################################################################################
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-- ############################################################################################################################
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