| Line 11... |
Line 11... |
--| This can be easily modified to control other modes besides the EPP.
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--| This can be easily modified to control other modes besides the EPP.
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--| File history:
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--| File history:
|
--| 0.01 | nov-2008 | First testing release
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--| 0.01 | nov-2008 | First testing release
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--| 0.20 | dic-2008 | Customs signals without tri-state
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--| 0.20 | dic-2008 | Customs signals without tri-state
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--| 0.21 | jan-2009 | Asinc RST_I for Wishbone compatibility
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--| 0.21 | jan-2009 | Sinc reset
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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--| Copyright ® 2008, Facundo Aguilera.
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--| Copyright ® 2008, Facundo Aguilera.
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--|
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--|
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--| This VHDL design file is an open design; you can redistribute it and/or
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--| This VHDL design file is an open design; you can redistribute it and/or
|
--| modify it and/or implement it after contacting the author.
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--| modify it and/or implement it after contacting the author.
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| Line 91... |
Line 91... |
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----------------------------------------------------------------------------------------
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----------------------------------------------------------------------------------------
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-- estado siguiente
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-- estado siguiente
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P_state_comb: process(present_state, next_state, RST_I, nSelectIn, nAutoFd, ext_req_val, nInit, nStrobe) begin
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P_state_comb: process(present_state, next_state, RST_I, nSelectIn, nAutoFd, ext_req_val, nInit, nStrobe) begin
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|
|
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if RST_I = '1' then
|
|
next_state <= st_compatibility_idle;
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else
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case present_state is
|
case present_state is
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|
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when st_compatibility_idle =>
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when st_compatibility_idle =>
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PError <= '0';
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PError <= '0';
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nFault <= '1';
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nFault <= '1';
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| Line 165... |
Line 167... |
-- Finalizaci?n del modo EPP
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-- Finalizaci?n del modo EPP
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|
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next_state <= st_epp_mode;
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next_state <= st_epp_mode;
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-- Se sale de este estado en forma asíncrona ya que esta acción
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-- Se sale de este estado en forma asíncrona ya que esta acción
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end case; -- no tiene handshake.
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end case; -- no tiene handshake.
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end if;
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end process P_state_comb;
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end process P_state_comb;
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