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author | Josh Blum <josh@joshknows.com> | 2010-01-22 11:56:55 -0800 |
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committer | Josh Blum <josh@joshknows.com> | 2010-01-22 11:56:55 -0800 |
commit | 7bf8a6df381a667134b55701993c6770d32bc76b (patch) | |
tree | 4a298fb5450f7277b5aaf5210740ae18f818c9aa /control_lib/wb_semaphore.v | |
parent | 8f2c33eab9396185df259639082b7d1618585973 (diff) | |
download | uhd-7bf8a6df381a667134b55701993c6770d32bc76b.tar.gz uhd-7bf8a6df381a667134b55701993c6770d32bc76b.tar.bz2 uhd-7bf8a6df381a667134b55701993c6770d32bc76b.zip |
Moved usrp2 fpga files into usrp2 subdir.
Diffstat (limited to 'control_lib/wb_semaphore.v')
-rw-r--r-- | control_lib/wb_semaphore.v | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/control_lib/wb_semaphore.v b/control_lib/wb_semaphore.v deleted file mode 100644 index a9208e6a1..000000000 --- a/control_lib/wb_semaphore.v +++ /dev/null @@ -1,42 +0,0 @@ - -// up to 8 semaphores - -// After a read operation, the semaphore is always locked -// If it was already locked before the read (meaning someone else holds the lock) -// then a 1 is returned -// If it was not already locked (meaning the reader now holds the lock) -// then a 0 is returned - -// A write operation clears the lock - -module wb_semaphore - #(parameter count=8, DBUS_WIDTH=32) - (input wb_clk_i, - input wb_rst_i, - input [DBUS_WIDTH-1:0] wb_dat_i, - input [2:0] wb_adr_i, - input wb_cyc_i, - input wb_stb_i, - input wb_we_i, - output wb_ack_o, - output [DBUS_WIDTH-1:0] wb_dat_o); - - reg [count-1:0] locked; - - always @(posedge clock) - if(wb_rst_i) - locked <= {count{1'b0}}; - else if(wb_stb_i) - if(wb_we_i) - locked[adr_i] <= 1'b0; - else - locked[adr_i] <= 1'b1; - - assign wb_dat_o[DBUS_WIDTH-1:1] = {(DBUS_WIDTH-1){1'b0}}; - assign wb_dat_o[0] = locked[adr_i]; - assign wb_ack_o = wb_stb_i; - - -endmodule // wb_semaphore - - |