X-Git-Url: http://git.joshuawise.com/fpgaboy.git/blobdiff_plain/df770340caf8ecd26a55179484edb507082bd5c6..f888201b9894683abfff012bd68b641319fb2744:/insn_incdec16.v

diff --git a/insn_incdec16.v b/insn_incdec16.v
index 01f919c..95e0d38 100644
--- a/insn_incdec16.v
+++ b/insn_incdec16.v
@@ -1,29 +1,15 @@
 `ifdef EXECUTE
 	`INSN_INCDEC16: begin
 		case (cycle)
-		0:	begin
-				case (opcode[5:4])
-				`INSN_reg16_BC:	begin
-					tmp <= registers[`REG_B];
-					tmp2 <= registers[`REG_C];
-				end
-				`INSN_reg16_DE:	begin
-					tmp <= registers[`REG_D];
-					tmp2 <= registers[`REG_E];
-				end
-				`INSN_reg16_HL:	begin
-					tmp <= registers[`REG_H];
-					tmp2 <= registers[`REG_L];
-				end
-				`INSN_reg16_SP:	begin
-					tmp <= registers[`REG_SPH];
-					tmp2 <= registers[`REG_SPL];
-				end
-				endcase
-			end
+		0:	case (opcode[5:4])
+			`INSN_reg16_BC:	{tmp,tmp2} <= `_BC;
+			`INSN_reg16_DE:	{tmp,tmp2} <= `_DE;
+			`INSN_reg16_HL:	{tmp,tmp2} <= `_HL;
+			`INSN_reg16_SP:	{tmp,tmp2} <= `_SP;
+			endcase
 		1:	begin
-				`EXEC_INC_PC;
-				`EXEC_NEWCYCLE;
+				`EXEC_INC_PC
+				`EXEC_NEWCYCLE
 			end
 		endcase
 	end
@@ -34,26 +20,12 @@
 		case (cycle)
 		0:	{tmp,tmp2} <= {tmp,tmp2} +
 				(opcode[3] ? 16'hFFFF : 16'h0001);
-		1: begin
-				case (opcode[5:4])
-				`INSN_reg16_BC:	begin
-					registers[`REG_B] <= tmp;
-					registers[`REG_C] <= tmp2;
-				end
-				`INSN_reg16_DE:	begin
-					registers[`REG_D] <= tmp;
-					registers[`REG_E] <= tmp2;
-				end
-				`INSN_reg16_HL:	begin
-					registers[`REG_H] <= tmp;
-					registers[`REG_L] <= tmp2;
-				end
-				`INSN_reg16_SP:	begin
-					registers[`REG_SPH] <= tmp;
-					registers[`REG_SPL] <= tmp2;
-				end
-				endcase
-			end
+		1:	case (opcode[5:4])
+			`INSN_reg16_BC:	`_BC <= {tmp,tmp2};
+			`INSN_reg16_DE:	`_DE <= {tmp,tmp2};
+			`INSN_reg16_HL:	`_HL <= {tmp,tmp2};
+			`INSN_reg16_SP:	`_SP <= {tmp,tmp2};
+			endcase
 		endcase
 	end
 `endif