diff options
Diffstat (limited to 'usrp2/gpmc/dbsm.v')
| -rw-r--r-- | usrp2/gpmc/dbsm.v | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/usrp2/gpmc/dbsm.v b/usrp2/gpmc/dbsm.v index 0f27be46a..ff61859ec 100644 --- a/usrp2/gpmc/dbsm.v +++ b/usrp2/gpmc/dbsm.v @@ -56,28 +56,18 @@ module dbsm full <= 0; end else - if(write_done) - if(writeable[write_sel]==(NUM_BUFS-1)) - begin - write_sel <= 0; - if(read_sel == 0) - full <= 1; - end + if(write_done & writeable[write_sel]) + if(write_sel ==(NUM_BUFS-1)) + write_sel <= 0; else - begin - write_sel <= write_sel + 1; - if(read_sel == write_sel + 1) - full <= 1; - end // else: !if(writeable[write_sel]==(NUM_BUFS-1)) - else if(read_done) - full <= 0; - + write_sel <= write_sel + 1; + always @(posedge clk) if(reset | clear) read_sel <= 0; else - if(read_done) - if(readable[read_sel]==(NUM_BUFS-1)) + if(read_done & readable[read_sel]) + if(read_sel==(NUM_BUFS-1)) read_sel <= 0; else read_sel <= read_sel + 1; |