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Subversion Repositories cpu_lecture

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    from Rev 21 to Rev 22
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Rev 21 → Rev 22

/cpu_lecture/trunk/src/io.vhd
144,12 → 144,15
L_TX_INT_ENABLED <= '0';
elsif (I_WE_IO = '1') then
case I_ADR_IO is
when X"38" => Q_7_SEGMENT <= I_DIN(6 downto 0); -- PORTB
when X"38" => -- PORTB
Q_7_SEGMENT <= I_DIN(6 downto 0);
L_LEDS <= not L_LEDS;
when X"40" => -- handled by uart
when X"41" => -- handled by uart
when X"43" => L_RX_INT_ENABLED <= I_DIN(0);
L_TX_INT_ENABLED <= I_DIN(1);
when X"2A" => -- UCSRB
L_RX_INT_ENABLED <= I_DIN(7);
L_TX_INT_ENABLED <= I_DIN(6);
when X"2B" => -- UCSRA: handled by uart
when X"2C" => -- UDR: handled by uart
when X"40" => -- UCSRC/UBRRH: (ignored)
when others =>
end case;
end if;

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