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1 | -- J.STELZNER\r |
| 2 | -- INFORMATIK-3 LABOR\r |
| 3 | -- 23.08.2006\r |
| 4 | -- File: FLAG_BUS.VHD\r |
| 5 | \r |
| 6 | library IEEE;\r |
| 7 | use IEEE.std_logic_1164.all;\r |
| 8 | \r |
| 9 | entity FLAG_BUS is\r |
| 10 | port\r |
| 11 | (\r |
| 12 | PCI_CLOCK :in std_logic;\r |
| 13 | KONS_1 :in std_logic;\r |
| 14 | FLAG_IN_0 :in std_logic;\r |
| 15 | R_EFn :in std_logic;\r |
| 16 | R_HFn :in std_logic;\r |
| 17 | R_FFn :in std_logic;\r |
| 18 | FLAG_IN_4 :in std_logic;\r |
| 19 | S_EFn :in std_logic;\r |
| 20 | S_HFn :in std_logic;\r |
| 21 | S_FFn :in std_logic;\r |
| 22 | HOLD :in std_logic;\r |
| 23 | SYNC_FLAG :out std_logic_vector (7 downto 0)\r |
| 24 | ); \r |
| 25 | end entity FLAG_BUS;\r |
| 26 | \r |
| 27 | architecture FLAG_BUS_DESIGN of FLAG_BUS is\r |
| 28 | \r |
| 29 | \r |
| 30 | signal FF1_S_EFn :std_logic; \r |
| 31 | signal FF1_S_HFn :std_logic;\r |
| 32 | signal FF1_S_FFn :std_logic;\r |
| 33 | signal FF1_R_EFn :std_logic;\r |
| 34 | signal FF1_R_HFn :std_logic;\r |
| 35 | signal FF1_R_FFn :std_logic;\r |
| 36 | \r |
| 37 | signal FF2_S_EFn :std_logic; \r |
| 38 | signal FF2_S_HFn :std_logic;\r |
| 39 | signal FF2_S_FFn :std_logic;\r |
| 40 | signal FF2_R_EFn :std_logic;\r |
| 41 | signal FF2_R_HFn :std_logic;\r |
| 42 | signal FF2_R_FFn :std_logic;\r |
| 43 | \r |
| 44 | begin\r |
| 45 | \r |
| 46 | \r |
| 47 | process (PCI_CLOCK) \r |
| 48 | begin \r |
| 49 | if (PCI_CLOCK'event and PCI_CLOCK = '1') then \r |
| 50 | \r |
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51 | FF1_S_EFn <= not S_EFn;\r |
| 52 | FF1_S_HFn <= not S_HFn;\r |
| 53 | FF1_S_FFn <= not S_FFn;\r |
| 54 | FF1_R_EFn <= not R_EFn;\r |
| 55 | FF1_R_HFn <= not R_HFn;\r |
| 56 | FF1_R_FFn <= not R_FFn;\r |
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57 | \r |
| 58 | end if;\r |
| 59 | end process; \r |
| 60 | \r |
| 61 | \r |
| 62 | process (PCI_CLOCK) \r |
| 63 | begin \r |
| 64 | if (PCI_CLOCK'event and PCI_CLOCK = '1') then \r |
| 65 | \r |
| 66 | if HOLD = '0' then\r |
| 67 | \r |
| 68 | FF2_S_EFn <= FF1_S_EFn; \r |
| 69 | FF2_S_HFn <= FF1_S_HFn;\r |
| 70 | FF2_S_FFn <= FF1_S_FFn;\r |
| 71 | FF2_R_EFn <= FF1_R_EFn;\r |
| 72 | FF2_R_HFn <= FF1_R_HFn;\r |
| 73 | FF2_R_FFn <= FF1_R_FFn;\r |
| 74 | \r |
| 75 | elsif HOLD = '1' then\r |
| 76 | \r |
| 77 | FF2_S_EFn <= FF2_S_EFn; \r |
| 78 | FF2_S_HFn <= FF2_S_HFn;\r |
| 79 | FF2_S_FFn <= FF2_S_FFn;\r |
| 80 | FF2_R_EFn <= FF2_R_EFn;\r |
| 81 | FF2_R_HFn <= FF2_R_HFn;\r |
| 82 | FF2_R_FFn <= FF2_R_FFn;\r |
| 83 | \r |
| 84 | end if;\r |
| 85 | end if;\r |
| 86 | end process; \r |
| 87 | \r |
| 88 | SYNC_FLAG(0) <= FLAG_IN_0; \r |
| 89 | SYNC_FLAG(1) <= FF2_R_EFn; \r |
| 90 | SYNC_FLAG(2) <= FF2_R_HFn;\r |
| 91 | SYNC_FLAG(3) <= FF2_R_FFn;\r |
| 92 | SYNC_FLAG(4) <= FLAG_IN_4; \r |
| 93 | SYNC_FLAG(5) <= FF2_S_EFn; \r |
| 94 | SYNC_FLAG(6) <= FF2_S_HFn;\r |
| 95 | SYNC_FLAG(7) <= FF2_S_FFn;\r |
| 96 | \r |
| 97 | end architecture FLAG_BUS_DESIGN;\r |
| 98 | \r |
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