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RTC: disable alarm options.

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This commit is contained in:
sorgelig
2018-08-21 15:27:41 +08:00
parent ff3ab93d69
commit 14328be1d6
1 changed files with 8 additions and 8 deletions
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16
src/rtc/mc146818a.vhd
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@ -56,11 +56,11 @@ begin
-- 14 Bytes of Clock and Control Registers Read
case A(7 downto 0) is
when x"00" => Dout <= seconds_reg;
when x"01" => Dout <= seconds_alarm_reg;
-- when x"01" => Dout <= seconds_alarm_reg;
when x"02" => Dout <= minutes_reg;
when x"03" => Dout <= minutes_alarm_reg;
-- when x"03" => Dout <= minutes_alarm_reg;
when x"04" => Dout <= hours_reg;
when x"05" => Dout <= hours_alarm_reg;
-- when x"05" => Dout <= hours_alarm_reg;
when x"06" => Dout <= weeks_reg;
when x"07" => Dout <= days_reg;
when x"08" => Dout <= month_reg;
@ -147,11 +147,11 @@ begin
a_reg(7) <= '1';
c_reg(4) <= '1';
-- alarm
if ((seconds_reg = seconds_alarm_reg) and
(minutes_reg = minutes_alarm_reg) and
(hours_reg = hours_alarm_reg)) then
c_reg(5) <= '1';
end if;
-- if ((seconds_reg = seconds_alarm_reg) and
-- (minutes_reg = minutes_alarm_reg) and
-- (hours_reg = hours_alarm_reg)) then
-- c_reg(5) <= '1';
-- end if;
-- DM binary-coded-decimal (BCD) data mode
--if b_reg(2) = '0' then
if seconds_reg(3 downto 0) /= "1001" then