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[/] [open8_urisc/] [trunk/] [VHDL/] [o8_epoch_timer.vhd] - Diff between revs 212 and 213
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| Rev 212 |
Rev 213 |
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Line 42... |
-- 0x5 AAAAAAAA B1 of Current Epoch Time(RO)
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-- 0x5 AAAAAAAA B1 of Current Epoch Time(RO)
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-- 0x6 AAAAAAAA B2 of Current Epoch Time(RO)
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-- 0x6 AAAAAAAA B2 of Current Epoch Time(RO)
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-- Note that any write to 0x04,0x05, or 0x06 will copy the
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-- Note that any write to 0x04,0x05, or 0x06 will copy the
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-- current epoch time to a readable output buffer
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-- current epoch time to a readable output buffer
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-- 0x7 -------- Epoch Time Latch/Clear Control Register
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-- 0x7 -------- Epoch Time Latch/Clear Control Register
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-- Any write to 0x7 will clear/reset the timer and compare val
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-- Any write to 0x7 will clear/reset the all timer regs
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--
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--
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-- Revision History
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-- Revision History
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-- Author Date Change
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-- Author Date Change
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------------------ -------- ---------------------------------------------------
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------------------ -------- ---------------------------------------------------
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-- Seth Henry 07/28/11 Design Start
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-- Seth Henry 07/28/11 Design Start
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-- Seth Henry 12/19/19 Renamed to "o8_epoch_timer" to fit "theme"
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-- Seth Henry 12/19/19 Renamed to "o8_epoch_timer" to fit "theme"
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-- Seth Henry 04/10/20 Overhauled the register interface of the timer to
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-- make the interface more sensible to software.
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library ieee;
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library ieee;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_1164.all;
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use ieee.std_logic_unsigned.all;
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use ieee.std_logic_unsigned.all;
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use ieee.std_logic_arith.all;
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use ieee.std_logic_arith.all;
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