diff options
Diffstat (limited to 'basys3/basys3.srcs/ppu_addr_dec.vhd')
| -rw-r--r-- | basys3/basys3.srcs/ppu_addr_dec.vhd | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/basys3/basys3.srcs/ppu_addr_dec.vhd b/basys3/basys3.srcs/ppu_addr_dec.vhd index df83964..e0c374f 100644 --- a/basys3/basys3.srcs/ppu_addr_dec.vhd +++ b/basys3/basys3.srcs/ppu_addr_dec.vhd @@ -43,9 +43,9 @@ begin AUX_WEN <= AUX_RANGE and WEN; -- address ranges - TMM_RANGE <= '1' when not (ADDR(15) = '1' and ADDR(14) = '1') else '0'; - BAM_RANGE <= '1' when (ADDR(15) = '1' and ADDR(14) = '1') and (ADDR(11) = '0') else '0'; - FAM_RANGE <= '1' when (ADDR(15) = '1' and ADDR(14) = '1') and (ADDR(11) = '1' and ADDR(10) = '0') else '0'; - PAL_RANGE <= '1' when (ADDR(15) = '1' and ADDR(14) = '1') and (ADDR(11) = '1' and ADDR(10) = '1' and ADDR(9) = '0') else '0'; - AUX_RANGE <= '1' when (ADDR(15) = '1' and ADDR(14) = '1') and (ADDR(11) = '1' and ADDR(10) = '1' and ADDR(9) = '1') else '0'; + TMM_RANGE <= '1' when not ((ADDR(15) and ADDR(14) and ADDR(13)) or (ADDR(15) and ADDR(14) and ADDR(12))) else '0'; + BAM_RANGE <= '1' when TMM_RANGE = '0' and (ADDR(11) = '0') else '0'; + FAM_RANGE <= '1' when TMM_RANGE = '0' and (ADDR(11) = '1' and ADDR(10) = '0') else '0'; + PAL_RANGE <= '1' when TMM_RANGE = '0' and (ADDR(11) = '1' and ADDR(10) = '1' and ADDR(9) = '0') else '0'; + AUX_RANGE <= '1' when TMM_RANGE = '0' and (ADDR(11) = '1' and ADDR(10) = '1' and ADDR(9) = '1') else '0'; end Behavioral; |