X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/5f7913a508f18ca9664223dde5ae16608595a08b..81358c71b258a72a2777bba0a0b4a82a7cae298a:/insn_ld_reg_imm8.v

diff --git a/insn_ld_reg_imm8.v b/insn_ld_reg_imm8.v
new file mode 100644
index 0000000..77768e0
--- /dev/null
+++ b/insn_ld_reg_imm8.v
@@ -0,0 +1,43 @@
+`ifdef EXECUTE
+	`INSN_LD_reg_imm8: begin
+		case (cycle)
+		0:	begin
+				`EXEC_INC_PC;
+				`EXEC_NEXTADDR_PCINC;
+				rd <= 1;
+			end
+		1:	begin
+				`EXEC_INC_PC;
+				if (opcode[5:3] == `INSN_reg_dHL) begin
+					address <= {registers[`REG_H], registers[`REG_L]};
+					wdata <= rdata;
+					rd <= 0;
+					wr <= 1;
+				end else begin
+					`EXEC_NEWCYCLE;
+				end
+			end
+		2:	begin
+				`EXEC_NEWCYCLE;
+			end
+		endcase
+	end
+`endif
+
+`ifdef WRITEBACK
+	`INSN_LD_reg_imm8:
+		case (cycle)
+		0:	begin end
+		1:	case (opcode[5:3])
+			`INSN_reg_A:	begin registers[`REG_A] <= rdata; end
+			`INSN_reg_B:	begin registers[`REG_B] <= rdata; end
+			`INSN_reg_C:	begin registers[`REG_C] <= rdata; end
+			`INSN_reg_D:	begin registers[`REG_D] <= rdata; end
+			`INSN_reg_E:	begin registers[`REG_E] <= rdata; end
+			`INSN_reg_H:	begin registers[`REG_H] <= rdata; end
+			`INSN_reg_L:	begin registers[`REG_L] <= rdata; end
+			`INSN_reg_dHL:	begin /* Go off to cycle 2 */ end
+			endcase
+		2:	begin end
+		endcase
+`endif