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- removed pushd and popd from control lines. Reduce by 2.

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Committed on the Free edition of March Hare Software CVSNT Server.
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git-svn-id: http://moon:8086/svn/vhdl/trunk@921 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2011-06-25 15:09:09 +00:00
parent 5430521f4f
commit f265661633
2 changed files with 5 additions and 9 deletions
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lib/CPUs/JCpu/src/core/cpu.vhd
+3 -3
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@@ -306,8 +306,8 @@ pc_pushpop:
process(ctrl.lines, int_pc_load, int_stk_push, int_stk_pop, was_pop2pc)
begin
pc_load <= ctrl.lines.pc_load or int_pc_load;
stk_push <= (ctrl.lines.stk_pushd or ctrl.lines.stk_push) or (int_stk_push and not was_pop2pc);
stk_pop <= ctrl.lines.stk_popd or int_stk_pop or (ctrl.lines.stk_pop and not int_pc_load);
stk_push <= ctrl.lines.stk_push or (int_stk_push and not was_pop2pc);
stk_pop <= (ctrl.lines.stk_pop and not ctrl.lines.pc_load) or int_stk_pop or ((ctrl.lines.stk_pop and ctrl.lines.pc_load) and not int_pc_load);
end process;
lines_delay:
@@ -324,7 +324,7 @@ stk_mux:
begin
if was_pcld = '1' and int_stk_push = '1' then
stk_in <= idata;
elsif ctrl.lines.stk_pushd = '1' then
elsif ctrl.lines.stk_push = '1' and ctrl.lines.pc_load = '0' then
stk_in <= creg_ctrl_out.stk_high & reg_a_dout;
else
stk_in <= pc_next;