diff --git a/include/link/main.h b/include/link/main.h
index 3915f49b..218ca6d0 100644
--- a/include/link/main.h
+++ b/include/link/main.h
@@ -4,6 +4,6 @@
 #include "types.h"
 
 extern SLONG fillchar;
-extern char smartlinkstartsymbol[256];
+extern char *smartlinkstartsymbol;
 
 #endif
diff --git a/include/link/symbol.h b/include/link/symbol.h
index 3be6e43c..29fdfdcf 100644
--- a/include/link/symbol.h
+++ b/include/link/symbol.h
@@ -4,7 +4,7 @@
 #include "types.h"
 
 void sym_Init(void);
-void sym_CreateSymbol(char *tzName, SLONG nValue, SBYTE nBank);
+void sym_CreateSymbol(char *tzName, SLONG nValue, SLONG nBank);
 SLONG sym_GetValue(char *tzName);
 SLONG sym_GetBank(char *tzName);
 
diff --git a/src/asm/asmy.y b/src/asm/asmy.y
index 3e9b3837..46d4554d 100644
--- a/src/asm/asmy.y
+++ b/src/asm/asmy.y
@@ -20,6 +20,49 @@
 char	*tzNewMacro;
 ULONG	ulNewMacroSize;
 
+void
+bankrangecheck(char *name, ULONG secttype, SLONG org, SLONG bank)
+{
+	SLONG minbank, maxbank;
+	char *stype;
+	switch (secttype) {
+	case SECT_ROMX:
+		stype = "ROMX";
+		minbank = 1;
+		maxbank = 0x1ff;
+		break;
+	case SECT_SRAM:
+		stype = "SRAM";
+		minbank = 0;
+		maxbank = 0x1ff;
+		break;
+	case SECT_WRAMX:
+		stype = "WRAMX";
+		minbank = 1;
+		maxbank = 7;
+		break;
+	case SECT_VRAM:
+		stype = "VRAM";
+		minbank = 0;
+		maxbank = 1;
+		break;
+	default:
+		yyerror("BANK only allowed for "
+		    "ROMX, WRAMX, SRAM, or VRAM sections");
+	}
+
+	if (bank < minbank || bank > maxbank) {
+		yyerror("%s bank value $%x out of range ($%x to $%x)",
+		    stype, bank, minbank, maxbank);
+	}
+
+	if (secttype == SECT_WRAMX) {
+		bank -= minbank;
+	}
+
+	out_NewAbsSection(name, secttype, org, bank);
+}
+
 size_t symvaluetostring(char *dest, size_t maxLength, char *sym)
 {
 	size_t length;
@@ -497,22 +540,16 @@ void	if_skip_to_endc( void )
 
 %%
 
-asmfile : lines lastline;
-
-lastline : /* empty */
-	| line {
-		nLineNo += 1;
-		nTotalLines += 1;
-	};
+asmfile : lines;
 
+/* Note: The lexer add '\n' at the end of the input */
 lines : /* empty */
 	| lines line '\n' {
 		nLineNo += 1;
 		nTotalLines += 1;
 	};
 
-line : /* empty */
-	| label
+line : label
 	| label cpu_command
 	| label macro
 	| label simple_pseudoop
@@ -1060,76 +1097,14 @@ section:
 		}
 	|	T_POP_SECTION string ',' sectiontype ',' T_OP_BANK '[' const ']'
 		{
-			if( $4==SECT_ROMX ) {
-				if( $8>=1 && $8<=0x1ff )
-					out_NewAbsSection($2,$4,-1,$8);
-				else
-					yyerror("ROM bank value $%x out of range (1 to $1ff)", $8);
-			} else if ($4 == SECT_SRAM) {
-				if ($8 >= 0 && $8 <= 3) {
-					out_NewAbsSection($2, $4, -1, $8);
-				} else {
-					yyerror("SRAM bank value $%x out of range (0 to 3)", $8);
-				}
-			} else if ($4 == SECT_WRAMX) {
-				if ($8 >= 1 && $8 <= 7) {
-					out_NewAbsSection($2, $4, -1, $8 - 1);
-				} else {
-					yyerror("WRAMX bank value $%x out of range (1 to 7)", $8);
-				}
-			} else if ($4 == SECT_VRAM) {
-				if ($8 >= 0 && $8 <= 1) {
-					out_NewAbsSection($2, $4, -1, $8);
-				} else {
-					yyerror("VRAM bank value $%x out of range (0 to 1)", $8);
-				}
-			} else {
-				yyerror("BANK only allowed for ROMX, WRAMX, SRAM, or VRAM sections");
-			}
+			bankrangecheck($2, $4, -1, $8);
 		}
 	|	T_POP_SECTION string ',' sectiontype '[' const ']' ',' T_OP_BANK '[' const ']'
 		{
-			if( $4==SECT_ROMX ) {
-				if( $6>=0 && $6<0x10000 ) {
-					if( $11>=1 && $11<=0x1ff )
-						out_NewAbsSection($2,$4,$6,$11);
-					else
-						yyerror("ROM bank value $%x out of range (1 to $1ff)", $11);
-				} else
-					yyerror("Address $%x not 16-bit", $6);
-			} else if ($4 == SECT_SRAM) {
-				if ($6 >= 0 && $6 < 0x10000) {
-					if ($11 >= 0 && $11 <= 3) {
-						out_NewAbsSection($2, $4, $6, $11);
-					} else {
-						yyerror("SRAM bank value $%x out of range (0 to 3)", $11);
-					}
-				} else {
-					yyerror("Address $%x not 16-bit", $6);
-				}
-			} else if ($4 == SECT_WRAMX) {
-				if ($6 >= 0 && $6 < 0x10000) {
-					if ($11 >= 1 && $11 <= 7) {
-						out_NewAbsSection($2, $4, $6, $11 - 1);
-					} else {
-						yyerror("WRAMX bank value $%x out of range (1 to 7)", $11);
-					}
-				} else {
-					yyerror("Address $%x not 16-bit", $6);
-				}
-			} else if ($4 == SECT_VRAM) {
-				if ($6 >= 0 && $6 < 0x10000) {
-					if ($11 >= 0 && $11 <= 1) {
-						out_NewAbsSection($2,$4,$6,$11);
-					} else {
-						yyerror("VRAM bank value $%x out of range (0 to 1)", $11);
-					}
-				} else {
-					yyerror("Address $%x not 16-bit", $6);
-				}
-			} else {
-				yyerror("BANK only allowed for ROMX, WRAMX, SRAM, or VRAM sections");
+			if ($6 < 0 || $6 > 0x10000) {
+				yyerror("Address $%x not 16-bit", $6);
 			}
+			bankrangecheck($2, $4, $6, $11);
 		}
 ;
 
diff --git a/src/asm/globlex.c b/src/asm/globlex.c
index e2866661..cbf6235f 100644
--- a/src/asm/globlex.c
+++ b/src/asm/globlex.c
@@ -161,7 +161,7 @@ ParseSymbol(char *src, ULONG size)
 			if (*src == '@')
 				marg = sym_FindMacroArg(-1);
 			else if (*src >= '0' && *src <= '9')
-				marg = sym_FindMacroArg(*src);
+				marg = sym_FindMacroArg(*src - '0');
 			else {
 				fatalerror("Malformed ID");
 				return (0);
diff --git a/src/asm/output.c b/src/asm/output.c
index 7005c1dd..d4147a1b 100644
--- a/src/asm/output.c
+++ b/src/asm/output.c
@@ -389,7 +389,10 @@ createpatch(ULONG type, struct Expression * expr)
 				rpnexpr[rpnptr++] = value >> 16;
 				rpnexpr[rpnptr++] = value >> 24;
 			} else {
-				symptr = addsymbol(sym_FindSymbol(tzSym));
+				struct sSymbol *sym;
+				if ((sym = sym_FindSymbol(tzSym)) == NULL)
+					break;
+				symptr = addsymbol(sym);
 				rpnexpr[rpnptr++] = RPN_SYM;
 				rpnexpr[rpnptr++] = symptr & 0xFF;
 				rpnexpr[rpnptr++] = symptr >> 8;
@@ -397,15 +400,19 @@ createpatch(ULONG type, struct Expression * expr)
 				rpnexpr[rpnptr++] = symptr >> 24;
 			}
 			break;
-		case RPN_BANK:
+		case RPN_BANK: {
+			struct sSymbol *sym;
 			symptr = 0;
 			while ((tzSym[symptr++] = rpn_PopByte(expr)) != 0);
-			symptr = addsymbol(sym_FindSymbol(tzSym));
+			if ((sym = sym_FindSymbol(tzSym)) == NULL)
+				break;
+			symptr = addsymbol(sym);
 			rpnexpr[rpnptr++] = RPN_BANK;
 			rpnexpr[rpnptr++] = symptr & 0xFF;
 			rpnexpr[rpnptr++] = symptr >> 8;
 			rpnexpr[rpnptr++] = symptr >> 16;
 			rpnexpr[rpnptr++] = symptr >> 24;
+			}
 			break;
 		default:
 			rpnexpr[rpnptr++] = rpndata;
diff --git a/src/link/main.c b/src/link/main.c
index 954d0234..8eda44a8 100644
--- a/src/link/main.c
+++ b/src/link/main.c
@@ -22,7 +22,7 @@ enum eBlockType {
 
 SLONG options = 0;
 SLONG fillchar = 0;
-char smartlinkstartsymbol[256];
+char *smartlinkstartsymbol;
 
 char *progname;
 
@@ -79,7 +79,7 @@ main(int argc, char *argv[])
 			break;
 		case 's':
 			options |= OPT_SMART_C_LINK;
-			strcpy(smartlinkstartsymbol, optarg);
+			smartlinkstartsymbol = optarg;
 			break;
 		case 't':
 			options |= OPT_SMALL;
diff --git a/src/link/symbol.c b/src/link/symbol.c
index b0040022..36cbd7d5 100644
--- a/src/link/symbol.c
+++ b/src/link/symbol.c
@@ -76,7 +76,7 @@ sym_GetBank(char *tzName)
 }
 
 void 
-sym_CreateSymbol(char *tzName, SLONG nValue, SBYTE nBank)
+sym_CreateSymbol(char *tzName, SLONG nValue, SLONG nBank)
 {
 	if (strcmp(tzName, "@") == 0)
 		return;