put rtc back in

MacPlus.sdc

@@ -1,5 +1,3 @@
 derive_pll_clocks
 derive_clock_uncertainty
 
-set_multicycle_path -from {emu|m68k|*} -setup 2
-set_multicycle_path -from {emu|m68k|*} -hold 1

MacPlus.sv

@@ -314,13 +314,6 @@ wire [21:1] dio_a =
 
 
 
-
-// keys and switches are dummies as the mist doesn't have any ...
-wire [9:0] sw = 10'd0;
-wire [3:0] key = 4'd0;
-
-
-
 	//assign SDRAM_CLK = clk64;
 	// the configuration string is returned to the io controller to allow
 	// it to control the menu on the OSD

rtl/rtc.v

@@ -60,7 +60,7 @@ reg   [8:0] yoe; // year of era
 reg  [10:0] doy; // day of year
 reg  [20:0] doe; // day of era
 reg  [23:0] days;
-/*
+
 always @(*) begin
 	//    Days from epoch (01/01/1904)
 	//    y -= m <= 2;
@@ -74,7 +74,7 @@ always @(*) begin
 	doe = yoe * 9'd365 + yoe/4 - yoe/100 + doy;
 	days = 5 * 146097 + doe - 719468 + 24107;
 end
-*/
+
 always @(posedge clk) begin
 	if (reset) begin
 		bit_cnt <= 0;