Move the core to core/

diff --git a/CoreTop.prj b/CoreTop.prj
index 4f1c839b65cab9872c07100b4c1cdf5ff3a5443c..c28c727587a200e36210c4e54d951011076281e8 100644 (file)
--- a/CoreTop.prj
+++ b/CoreTop.prj
@@ -1,7 +1,7 @@
 verilog work "Uart.v"
 verilog work "Timer.v"
 verilog work "Interrupt.v"
-verilog work "GBZ80Core.v"
+verilog work "core/GBZ80Core.v"
 verilog work "CPUDCM.v"
 verilog work "7seg.v"
 verilog work "System.v"

diff --git a/Makefile b/Makefile
index 15107c3000d49871784ffc99370b4d86a6d1c224..40d5efa7168e199800fa45f11fe2c2fdac1a80e5 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,17 @@
-VLOGS = 7seg.v Framebuffer.v GBZ80Core.v Interrupt.v LCDC.v Sound1.v \
+VLOGS = 7seg.v Framebuffer.v core/GBZ80Core.v Interrupt.v LCDC.v Sound1.v \
        Sound2.v Soundcore.v System.v Timer.v Uart.v Buttons.v PS2Button.v
 
-VLOGS_ALL = $(VLOGS) insn_call-callcc.v insn_incdec16.v insn_jr-jrcc.v \
-       insn_ld_reg_hl.v insn_ld_reg_reg.v insn_nop.v insn_ret-retcc.v \
-       allinsns.v insn_alu8.v insn_di-ei.v insn_jp_hl.v insn_ldh_ac.v \
-       insn_ld_reg_imm16.v insn_ld_sp_hl.v insn_pop_reg.v insn_rst.v \
-       CPUDCM.v insn_alu_a.v insn_halt.v insn_jp-jpcc.v insn_ld_hl_reg.v \
-       insn_ld_reg_imm8.v insn_ldx_ahl.v insn_push_reg.v insn_vop_intr.v \
-       insn_ldm8_a.v insn_ldm16_a.v insn_ldbcde_a.v insn_alu_ext.v \
-       insn_bit.v insn_two_byte.v insn_incdec_reg8.v insn_add_hl.v
+VLOGS_ALL = $(VLOGS) core/insn_call-callcc.v core/insn_incdec16.v \
+       core/insn_jr-jrcc.v core/insn_ld_reg_hl.v core/insn_ld_reg_reg.v \
+       core/insn_nop.v core/insn_ret-retcc.v core/allinsns.v \
+       core/insn_alu8.v core/insn_di-ei.v core/insn_jp_hl.v \
+       core/insn_ldh_ac.v core/insn_ld_reg_imm16.v core/insn_ld_sp_hl.v \
+       core/insn_pop_reg.v core/insn_rst.v CPUDCM.v core/insn_alu_a.v \
+       core/insn_halt.v core/insn_jp-jpcc.v core/insn_ld_hl_reg.v \
+       core/insn_ld_reg_imm8.v core/insn_ldx_ahl.v core/insn_push_reg.v \
+       core/insn_vop_intr.v core/insn_ldm8_a.v core/insn_ldm16_a.v \
+       core/insn_ldbcde_a.v core/insn_alu_ext.v core/insn_bit.v \
+       core/insn_two_byte.v core/insn_incdec_reg8.v core/insn_add_hl.v
 
 all: CoreTop.svf
 

diff --git a/PS2Button.v b/PS2Button.v
index 169346c73335883fede324d1afb2bd4404833e84..81a0e89b7fa3135ea4fcbc72a39a19e50dccc95e 100644 (file)
--- a/PS2Button.v
+++ b/PS2Button.v
@@ -1,4 +1,5 @@
 module PS2Button(
+       input clk,
        input inclk,
        input indata,
        output wire [7:0] buttons
@@ -10,9 +11,29 @@ module PS2Button(
        reg key_a = 0,key_b = 0,key_st = 0,key_sel = 0,key_up = 0,key_dn = 0,key_l = 0,key_r = 0;
 
        assign buttons = {key_st,key_sel,key_b,key_a,key_dn,key_up,key_l,key_r};
+       
+       /* Clock debouncing */
+       reg lastinclk = 0;
+       reg [5:0] debounce = 0;
+       reg fixedclk = 0;
+       reg [9:0] resetcountdown = 0;
+       
+       always @(posedge clk) begin
+               if (inclk != lastinclk) begin
+                       lastinclk <= inclk;
+                       debounce <= 1;
+                       resetcountdown <= 10'b1111111111;
+               end else if (debounce == 0) begin
+                       fixedclk <= inclk;
+                       resetcountdown <= resetcountdown - 1;
+               end else
+                       debounce <= debounce + 1;
+       end
 
-       always @ (negedge inclk) begin
-               if(bitcount == 10) begin
+       always @(negedge fixedclk) begin
+               if (resetcountdown == 0)
+                       bitcount <= 0;
+               else if (bitcount == 10) begin
                        bitcount <= 0;
                        if(parity != (^ key)) begin
                                if(keyarrow) begin

diff --git a/System.v b/System.v
index 68de591a44517b3318560559412ad13c9e6c8739..37ca872bdecb246d1e34f40394c565039b2eaff2 100644 (file)
--- a/System.v
+++ b/System.v
@@ -369,6 +369,7 @@ module CoreTop(
 `ifdef isim
 `else
        PS2Button ps2(
+               .clk(clk),
                .inclk(ps2c),
                .indata(ps2d),
                .buttons(ps2buttons)

diff --git a/GBZ80Core.v b/core/GBZ80Core.v
similarity index 100%
rename from GBZ80Core.v
rename to core/GBZ80Core.v

diff --git a/allinsns.v b/core/allinsns.v
similarity index 100%
rename from allinsns.v
rename to core/allinsns.v

diff --git a/insn_add_hl.v b/core/insn_add_hl.v
similarity index 100%
rename from insn_add_hl.v
rename to core/insn_add_hl.v

diff --git a/insn_alu8.v b/core/insn_alu8.v
similarity index 100%
rename from insn_alu8.v
rename to core/insn_alu8.v

diff --git a/insn_alu_a.v b/core/insn_alu_a.v
similarity index 100%
rename from insn_alu_a.v
rename to core/insn_alu_a.v

diff --git a/insn_alu_ext.v b/core/insn_alu_ext.v
similarity index 100%
rename from insn_alu_ext.v
rename to core/insn_alu_ext.v

diff --git a/insn_bit.v b/core/insn_bit.v
similarity index 100%
rename from insn_bit.v
rename to core/insn_bit.v

diff --git a/insn_call-callcc.v b/core/insn_call-callcc.v
similarity index 100%
rename from insn_call-callcc.v
rename to core/insn_call-callcc.v

diff --git a/insn_di-ei.v b/core/insn_di-ei.v
similarity index 100%
rename from insn_di-ei.v
rename to core/insn_di-ei.v

diff --git a/insn_halt.v b/core/insn_halt.v
similarity index 100%
rename from insn_halt.v
rename to core/insn_halt.v

diff --git a/insn_incdec16.v b/core/insn_incdec16.v
similarity index 100%
rename from insn_incdec16.v
rename to core/insn_incdec16.v

diff --git a/insn_incdec_hl.v b/core/insn_incdec_hl.v
similarity index 100%
rename from insn_incdec_hl.v
rename to core/insn_incdec_hl.v

diff --git a/insn_incdec_reg8.v b/core/insn_incdec_reg8.v
similarity index 100%
rename from insn_incdec_reg8.v
rename to core/insn_incdec_reg8.v

diff --git a/insn_jp-jpcc.v b/core/insn_jp-jpcc.v
similarity index 100%
rename from insn_jp-jpcc.v
rename to core/insn_jp-jpcc.v

diff --git a/insn_jp_hl.v b/core/insn_jp_hl.v
similarity index 100%
rename from insn_jp_hl.v
rename to core/insn_jp_hl.v

diff --git a/insn_jr-jrcc.v b/core/insn_jr-jrcc.v
similarity index 100%
rename from insn_jr-jrcc.v
rename to core/insn_jr-jrcc.v

diff --git a/insn_ld_hl_reg.v b/core/insn_ld_hl_reg.v
similarity index 100%
rename from insn_ld_hl_reg.v
rename to core/insn_ld_hl_reg.v

diff --git a/insn_ld_reg_hl.v b/core/insn_ld_reg_hl.v
similarity index 100%
rename from insn_ld_reg_hl.v
rename to core/insn_ld_reg_hl.v

diff --git a/insn_ld_reg_imm16.v b/core/insn_ld_reg_imm16.v
similarity index 100%
rename from insn_ld_reg_imm16.v
rename to core/insn_ld_reg_imm16.v

diff --git a/insn_ld_reg_imm8.v b/core/insn_ld_reg_imm8.v
similarity index 100%
rename from insn_ld_reg_imm8.v
rename to core/insn_ld_reg_imm8.v

diff --git a/insn_ld_reg_reg.v b/core/insn_ld_reg_reg.v
similarity index 100%
rename from insn_ld_reg_reg.v
rename to core/insn_ld_reg_reg.v

diff --git a/insn_ld_sp_hl.v b/core/insn_ld_sp_hl.v
similarity index 100%
rename from insn_ld_sp_hl.v
rename to core/insn_ld_sp_hl.v

diff --git a/insn_ldbcde_a.v b/core/insn_ldbcde_a.v
similarity index 100%
rename from insn_ldbcde_a.v
rename to core/insn_ldbcde_a.v

diff --git a/insn_ldh_ac.v b/core/insn_ldh_ac.v
similarity index 100%
rename from insn_ldh_ac.v
rename to core/insn_ldh_ac.v

diff --git a/insn_ldm16_a.v b/core/insn_ldm16_a.v
similarity index 100%
rename from insn_ldm16_a.v
rename to core/insn_ldm16_a.v

diff --git a/insn_ldm8_a.v b/core/insn_ldm8_a.v
similarity index 100%
rename from insn_ldm8_a.v
rename to core/insn_ldm8_a.v

diff --git a/insn_ldx_ahl.v b/core/insn_ldx_ahl.v
similarity index 100%
rename from insn_ldx_ahl.v
rename to core/insn_ldx_ahl.v

diff --git a/insn_nop.v b/core/insn_nop.v
similarity index 100%
rename from insn_nop.v
rename to core/insn_nop.v

diff --git a/insn_pop_reg.v b/core/insn_pop_reg.v
similarity index 100%
rename from insn_pop_reg.v
rename to core/insn_pop_reg.v

diff --git a/insn_push_reg.v b/core/insn_push_reg.v
similarity index 100%
rename from insn_push_reg.v
rename to core/insn_push_reg.v

diff --git a/insn_ret-retcc.v b/core/insn_ret-retcc.v
similarity index 100%
rename from insn_ret-retcc.v
rename to core/insn_ret-retcc.v

diff --git a/insn_rst.v b/core/insn_rst.v
similarity index 100%
rename from insn_rst.v
rename to core/insn_rst.v

diff --git a/core/insn_two_byte.v b/core/insn_two_byte.v
new file mode 100644 (file)
index 0000000..78cd7c7
--- /dev/null
+++ b/core/insn_two_byte.v
@@ -0,0 +1,11 @@
+`ifdef EXECUTE
+       `INSN_TWO_BYTE: begin
+               `EXEC_INC_PC    
+               `EXEC_NEWCYCLE_TWOBYTE
+       end
+`endif
+
+`ifdef WRITEBACK
+       `INSN_TWO_BYTE: begin
+       end
+`endif

diff --git a/insn_vop_intr.v b/core/insn_vop_intr.v
similarity index 100%
rename from insn_vop_intr.v
rename to core/insn_vop_intr.v