Move the core to core/

[fpgaboy.git] / core / insn_ld_reg_imm16.v

diff --git a/core/insn_ld_reg_imm16.v b/core/insn_ld_reg_imm16.v
new file mode 100644 (file)
index 0000000..cf79aaa
--- /dev/null
+++ b/core/insn_ld_reg_imm16.v
@@ -0,0 +1,34 @@
+`ifdef EXECUTE
+       `INSN_LD_reg_imm16: begin
+               `EXEC_INC_PC
+               case (cycle)
+               0:      `EXEC_READ(`_PC + 1)
+               1:      `EXEC_READ(`_PC + 1)
+               2:      `EXEC_NEWCYCLE
+               endcase
+       end
+`endif
+
+`ifdef WRITEBACK
+       `INSN_LD_reg_imm16: begin
+               case (cycle)
+               0:      begin /* */ end
+               1:      begin
+                               case (opcode[5:4])
+                               `INSN_reg16_BC: `_C <= rdata;
+                               `INSN_reg16_DE: `_E <= rdata;
+                               `INSN_reg16_HL: `_L <= rdata;
+                               `INSN_reg16_SP: `_SPL <= rdata;
+                               endcase
+                       end
+               2:      begin
+                               case (opcode[5:4])
+                               `INSN_reg16_BC: `_B <= rdata;
+                               `INSN_reg16_DE: `_D <= rdata;
+                               `INSN_reg16_HL: `_H <= rdata;
+                               `INSN_reg16_SP: `_SPH <= rdata;
+                               endcase
+                       end
+               endcase
+       end
+`endif