X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/5f7913a508f18ca9664223dde5ae16608595a08b..81358c71b258a72a2777bba0a0b4a82a7cae298a:/insn_ld_reg_imm16.v

diff --git a/insn_ld_reg_imm16.v b/insn_ld_reg_imm16.v
new file mode 100644
index 0000000..b9bd84e
--- /dev/null
+++ b/insn_ld_reg_imm16.v
@@ -0,0 +1,40 @@
+`ifdef EXECUTE
+	`INSN_LD_reg_imm16: begin
+		`EXEC_INC_PC;
+		case (cycle)
+		0:	begin
+				`EXEC_NEXTADDR_PCINC;
+				rd <= 1;
+			end
+		1:	begin
+				`EXEC_NEXTADDR_PCINC;
+				rd <= 1;
+			end
+		2:	begin `EXEC_NEWCYCLE; end
+		endcase
+	end
+`endif
+
+`ifdef WRITEBACK
+	`INSN_LD_reg_imm16: begin
+		case (cycle)
+		0:	begin /* */ end
+		1:	begin
+				case (opcode[5:4])
+				`INSN_reg16_BC:	registers[`REG_C] <= rdata;
+				`INSN_reg16_DE:	registers[`REG_E] <= rdata;
+				`INSN_reg16_HL:	registers[`REG_L] <= rdata;
+				`INSN_reg16_SP:	registers[`REG_SPL] <= rdata;
+				endcase
+			end
+		2:	begin
+				case (opcode[5:4])
+				`INSN_reg16_BC:	registers[`REG_B] <= rdata;
+				`INSN_reg16_DE:	registers[`REG_D] <= rdata;
+				`INSN_reg16_HL:	registers[`REG_H] <= rdata;
+				`INSN_reg16_SP:	registers[`REG_SPH] <= rdata;
+				endcase
+			end
+		endcase
+	end
+`endif