13 files changed, 211 insertions, 62 deletions

diff --git a/sys/dev/aic7xxx/Makefile b/sys/dev/aic7xxx/Makefile
index af75fce18aff..0a74ca9c8c47 100644
--- a/sys/dev/aic7xxx/Makefile
+++ b/sys/dev/aic7xxx/Makefile
@@ -1,4 +1,4 @@
-#	$Id: Makefile,v 1.2 1997/04/03 05:56:00 gibbs Exp $
+#	$Id: Makefile,v 1.3 1997/09/03 03:44:32 gibbs Exp $
 
 PROG=	aicasm
 
@@ -21,4 +21,11 @@ DEPENDFILE=
 
 CFLAGS+= -I.
 NOMAN=	noman
+
+.ifdef DEBUG
+CFLAGS+= -DDEBUG -g
+YFLAGS+= -t
+LFLAGS+= -d
+.endif
+
 .include <bsd.prog.mk>
diff --git a/sys/dev/aic7xxx/aic7xxx.reg b/sys/dev/aic7xxx/aic7xxx.reg
index 6ecae3bcdefd..b166c3381ec9 100644
--- a/sys/dev/aic7xxx/aic7xxx.reg
+++ b/sys/dev/aic7xxx/aic7xxx.reg
@@ -35,7 +35,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: aic7xxx.reg,v 1.4 1997/06/27 19:38:39 gibbs Exp $
+ *	$Id: aic7xxx.reg,v 1.5 1997/08/13 17:02:24 gibbs Exp $
  */
 
 /*
@@ -956,28 +956,6 @@ scratch_ram {
 		bit	FIFOFLUSH	0x02
 		bit	FIFORESET	0x01
 	}
-	/*
-	 * Number of SCBs supported by
-	 * this card.
-	 */
-	SCBCOUNT {
-		size		1
-	}
-	/*
-	 * Two's complement of SCBCOUNT
-	 */
-	COMP_SCBCOUNT {
-		size		1
-	}
-	/*
-	 * Mask of bits to test against
-	 * when looking at the Queue Count
-	 * registers.  Works around a bug
-	 * on aic7850 chips. 
-	 */
-	QCNTMASK {
-		size		1
-	}
 	SEQ_FLAGS {
 		size		1
 		bit	RESELECTED	0x80
@@ -1017,13 +995,6 @@ scratch_ram {
 		size		1
 	}
 	/*
-	 * The sequencer will stick the frist byte of any rejected message here
-	 * so we can see what is getting thrown away.
-	 */
-	REJBYTE	{
-		size		1
-	}
-	/*
 	 * The last bus phase as seen by the sequencer. 
 	 */
 	LASTPHASE {
@@ -1087,13 +1058,6 @@ scratch_ram {
 	CMDOUTCNT {
 		size		1
 	}
-	/*
-	 * Maximum number of entries allowed in
-	 * the QOUT/INFIFO.
-	 */
-	FIFODEPTH {
-		size		1
-	}
 	ARG_1 {
 		size		1
 		mask	SEND_MSG	0x80
@@ -1133,3 +1097,18 @@ const BUS_16_BIT		0x01
 const BUS_32_BIT		0x02
 const MAX_OFFSET_8BIT		0x0f
 const MAX_OFFSET_16BIT	0x08
+
+/*
+ * Downloaded (kernel inserted) constants
+ */
+const SCBCOUNT		download	/* The number of SCBs on this card */
+const COMP_SCBCOUNT	download	/* Two's complement of max SCBID */
+/*
+ * The maximum number of entries allowed in the QIN/OUTFIFO.
+ */
+const FIFODEPTH		download	/* Two's complement of SCBCOUNT */
+/*
+ * Mask of bits to test against when looking at the Queue Count
+ * registers.  Works around a bug on aic7850 chips. 
+ */
+const QCNTMASK		download
diff --git a/sys/dev/aic7xxx/aic7xxx.seq b/sys/dev/aic7xxx/aic7xxx.seq
index d6b6a042e855..d7338a539e1d 100644
--- a/sys/dev/aic7xxx/aic7xxx.seq
+++ b/sys/dev/aic7xxx/aic7xxx.seq
@@ -35,7 +35,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: aic7xxx.seq,v 1.74 1997/06/27 19:38:42 gibbs Exp $
+ *	$Id: aic7xxx.seq,v 1.75 1997/08/13 17:02:28 gibbs Exp $
  */
 
 #include <dev/aic7xxx/aic7xxx.reg>
@@ -88,8 +88,7 @@ poll_for_work:
 	cmp	WAITING_SCBH,SCB_LIST_NULL jne start_waiting;
 test_queue:
 	/* Has the driver posted any work for us? */
-	mov	A, QCNTMASK;
-	test	QINCNT,A	jz poll_for_work;
+	test	QINCNT,QCNTMASK	jz poll_for_work;
 
 /*
  * We have at least one queued SCB now and we don't have any 
@@ -567,7 +566,6 @@ p_mesgout_done:
  */
 p_mesgin:
 	mvi	ACCUM		call inb_first;	/* read the 1st message byte */
-	mov	REJBYTE,A;			/* save it for the driver */
 
 	test	A,MSG_IDENTIFYFLAG	jnz mesgin_identify;
 	cmp	A,MSG_DISCONNECT	je mesgin_disconnect;
@@ -648,8 +646,7 @@ complete:
 	 * Spin loop until there is space
 	 * in the QOUTFIFO.
 	 */
-	mov	A, FIFODEPTH;
-	cmp	CMDOUTCNT, A	je .;
+	cmp	CMDOUTCNT, FIFODEPTH	je .;
 	inc	CMDOUTCNT;
 .endif
 	mov	QOUTFIFO,SCB_TAG;
@@ -802,8 +799,7 @@ get_tag:
  * the complement of SCBCOUNT to the incomming tag and there is
  * no carry.
  */
-	mov	A,COMP_SCBCOUNT;
-	add	SINDEX,A,ARG_1;
+	add	SINDEX,COMP_SCBCOUNT,ARG_1;
 	jc	not_found;
 
 .if ! ( SCB_PAGING )
@@ -976,8 +972,7 @@ findSCB:
 	test	SCB_CONTROL,DISCONNECTED jnz foundSCB;/*should be disconnected*/
 findSCB_loop:
 	inc	SINDEX;
-	mov	A,SCBCOUNT;
-	cmp	SINDEX,A	jne findSCB;
+	cmp	SINDEX,SCBCOUNT	jne findSCB;
 /*
  * We didn't find it.  If we're paging, pull an SCB and DMA down the
  * one we want.  If we aren't paging or the SCB we dma down has the
diff --git a/sys/dev/aic7xxx/aicasm/Makefile b/sys/dev/aic7xxx/aicasm/Makefile
index af75fce18aff..0a74ca9c8c47 100644
--- a/sys/dev/aic7xxx/aicasm/Makefile
+++ b/sys/dev/aic7xxx/aicasm/Makefile
@@ -1,4 +1,4 @@
-#	$Id: Makefile,v 1.2 1997/04/03 05:56:00 gibbs Exp $
+#	$Id: Makefile,v 1.3 1997/09/03 03:44:32 gibbs Exp $
 
 PROG=	aicasm
 
@@ -21,4 +21,11 @@ DEPENDFILE=
 
 CFLAGS+= -I.
 NOMAN=	noman
+
+.ifdef DEBUG
+CFLAGS+= -DDEBUG -g
+YFLAGS+= -t
+LFLAGS+= -d
+.endif
+
 .include <bsd.prog.mk>
diff --git a/sys/dev/aic7xxx/aicasm/aicasm_gram.y b/sys/dev/aic7xxx/aicasm/aicasm_gram.y
index 24f8cc9b31f2..fa657c02f0c8 100644
--- a/sys/dev/aic7xxx/aicasm/aicasm_gram.y
+++ b/sys/dev/aic7xxx/aicasm/aicasm_gram.y
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_gram.y,v 1.2 1997/06/27 19:38:49 gibbs Exp $
+ *      $Id: aicasm_gram.y,v 1.3 1997/09/03 03:44:40 gibbs Exp $
  */
 
 #include <stdio.h>
@@ -55,6 +55,7 @@ static symbol_ref_t none;
 static symbol_ref_t sindex;
 static int instruction_ptr;
 static int sram_or_scb_offset;
+static int download_constant_count;
 static patch_t *cur_patch;
 
 static void process_bitmask __P((int mask_type, symbol_t *sym, int mask));
@@ -74,6 +75,7 @@ static void type_check __P((symbol_t *symbol, expression_t *expression,
 			    int and_op));
 static void make_expression __P((expression_t *immed, int value));
 static void add_conditional __P((symbol_t *symbol));
+static int  is_download_const __P((expression_t *immed));
 
 #define YYDEBUG 1
 #define SRAM_SYMNAME "SRAM_BASE"
@@ -92,6 +94,8 @@ static void add_conditional __P((symbol_t *symbol));
 
 %token <value> T_CONST
 
+%token T_DOWNLOAD
+
 %token T_SCB
 
 %token T_SRAM
@@ -154,6 +158,8 @@ static void add_conditional __P((symbol_t *symbol));
 
 %type <value> ret f1_opcode f2_opcode jmp_jc_jnc_call jz_jnz je_jne
 
+%type <value> numerical_value
+
 %left '|'
 %left '&'
 %left '+' '-'
@@ -422,6 +428,7 @@ expression:
 		case BIT:
 			$$.value = symbol->info.minfo->mask;
 			break;
+		case DOWNLOAD_CONST:
 		case CONST:
 			$$.value = symbol->info.cinfo->value;
 			break;
@@ -444,10 +451,10 @@ expression:
 ;
 
 constant:
-	T_CONST T_SYMBOL T_NUMBER	
+	T_CONST T_SYMBOL numerical_value
 	{
 		if ($2->type != UNINITIALIZED) {
-			stop("Re-definition of constant variable",
+			stop("Re-definition of symbol as a constant",
 			     EX_DATAERR);
 			/* NOTREACHED */
 		}
@@ -456,6 +463,34 @@ constant:
 		$2->info.cinfo->value = $3;
 		$2->info.cinfo->define = $1;
 	}
+|	T_CONST T_SYMBOL T_DOWNLOAD
+	{
+		if ($1) {
+			stop("Invalid downloaded constant declaration",
+			     EX_DATAERR);
+			/* NOTREACHED */
+		}
+		if ($2->type != UNINITIALIZED) {
+			stop("Re-definition of symbol as a downloaded constant",
+			     EX_DATAERR);
+			/* NOTREACHED */
+		}
+		$2->type = DOWNLOAD_CONST;
+		initialize_symbol($2);
+		$2->info.cinfo->value = download_constant_count++;
+		$2->info.cinfo->define = FALSE;
+	}
+;
+
+numerical_value:
+	T_NUMBER
+	{
+		$$ = $1;
+	}
+|	'-' T_NUMBER
+	{
+		$$ = -$2;
+	}
 ;
 
 scratch_ram:
@@ -997,6 +1032,7 @@ initialize_symbol(symbol)
 		SLIST_INIT(&(symbol->info.minfo->symrefs));
 		break;
         case CONST:
+        case DOWNLOAD_CONST:
 		symbol->info.cinfo =
 		    (struct const_info *)malloc(sizeof(struct const_info));
 		if (symbol->info.cinfo == NULL) {
@@ -1088,6 +1124,10 @@ format_1_instr(opcode, dest, immed, src, ret)
 	f1_instr->source = src->symbol->info.rinfo->address
 			 + src->offset;
 	f1_instr->immediate = immed->value;
+
+	if (is_download_const(immed))
+		f1_instr->opcode_ret |= DOWNLOAD_CONST_IMMEDIATE;
+
 	symlist_free(&immed->referenced_syms);
 	instruction_ptr++;
 }
@@ -1191,6 +1231,10 @@ format_3_instr(opcode, src, immed, address)
 	f3_instr->source = src->symbol->info.rinfo->address
 			 + src->offset;
 	f3_instr->immediate = immed->value;
+
+	if (is_download_const(immed))
+		f3_instr->opcode_addr |= DOWNLOAD_CONST_IMMEDIATE;
+
 	symlist_free(&immed->referenced_syms);
 	instruction_ptr++;
 }
@@ -1230,6 +1274,7 @@ type_check(symbol, expression, opcode)
 	and_op = FALSE;
 	if (opcode == AIC_OP_AND || opcode == AIC_OP_JNZ || AIC_OP_JZ)
 		and_op = TRUE;
+
 	/*
 	 * Make sure that we aren't attempting to write something
 	 * that hasn't been defined.  If this is an and operation,
@@ -1302,3 +1347,14 @@ yyerror(string)
 {
 	stop(string, EX_DATAERR);
 }
+
+static int
+is_download_const(immed)
+	expression_t *immed;
+{
+	if ((immed->referenced_syms.slh_first != NULL)
+	 && (immed->referenced_syms.slh_first->symbol->type == DOWNLOAD_CONST))
+		return (TRUE);
+
+	return (FALSE);
+}
diff --git a/sys/dev/aic7xxx/aicasm/aicasm_scan.l b/sys/dev/aic7xxx/aicasm/aicasm_scan.l
index 5c354283412f..844637687363 100644
--- a/sys/dev/aic7xxx/aicasm/aicasm_scan.l
+++ b/sys/dev/aic7xxx/aicasm/aicasm_scan.l
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_scan.l,v 1.3 1997/06/27 19:38:51 gibbs Exp $
+ *      $Id: aicasm_scan.l,v 1.4 1997/09/03 03:44:42 gibbs Exp $
  */
 
 #include <sys/types.h>
@@ -66,6 +66,7 @@ SPACE		[ \t]+
 	/* Register/SCB/SRAM definition keywords */
 register		{ return T_REGISTER; }
 const			{ yylval.value = FALSE; return T_CONST; }
+download		{ return T_DOWNLOAD; }
 address			{ return T_ADDRESS; }
 access_mode		{ return T_ACCESS_MODE; }
 RW|RO|WO		{
diff --git a/sys/dev/aic7xxx/aicasm/aicasm_symbol.c b/sys/dev/aic7xxx/aicasm/aicasm_symbol.c
index 08b0bc52ce2b..c9f645ac72e5 100644
--- a/sys/dev/aic7xxx/aicasm/aicasm_symbol.c
+++ b/sys/dev/aic7xxx/aicasm/aicasm_symbol.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_symbol.c,v 1.2 1997/06/27 19:38:54 gibbs Exp $
+ *      $Id: aicasm_symbol.c,v 1.3 1997/09/03 03:44:44 gibbs Exp $
  */
 
 
@@ -92,6 +92,7 @@ symbol_delete(symbol)
 			free(symbol->info.minfo);
 		}
 		break;
+	case DOWNLOAD_CONST:
 	case CONST:
 		if (symbol->info.cinfo != NULL)
 			free(symbol->info.cinfo);
@@ -312,11 +313,13 @@ symtable_dump(ofile)
 	symlist_t registers;
 	symlist_t masks;
 	symlist_t constants;
+	symlist_t download_constants;
 	symlist_t aliases;
 
 	SLIST_INIT(&registers);
 	SLIST_INIT(&masks);
 	SLIST_INIT(&constants);
+	SLIST_INIT(&download_constants);
 	SLIST_INIT(&aliases);
 
 	if (symtable != NULL) {
@@ -344,9 +347,14 @@ symtable_dump(ofile)
 						    SYMLIST_INSERT_HEAD);
 				}
 				break;
+			case DOWNLOAD_CONST:
+				symlist_add(&download_constants, cursym,
+					    SYMLIST_INSERT_HEAD);
+				break;
 			case ALIAS:
 				symlist_add(&aliases, cursym,
 					    SYMLIST_INSERT_HEAD);
+				break;
 			default:
 				break;
 			}
@@ -446,6 +454,20 @@ symtable_dump(ofile)
 				curnode->symbol->info.cinfo->value);
 			free(curnode);
 		}
+
+		
+		fprintf(ofile, "\n\n/* Downloaded Constant Definitions */\n");
+
+		while (download_constants.slh_first != NULL) {
+			symbol_node_t *curnode;
+
+			curnode = download_constants.slh_first;
+			SLIST_REMOVE_HEAD(&download_constants, links);
+			fprintf(ofile, "#define\t%-8s\t0x%02x\n",
+				curnode->symbol->name,
+				curnode->symbol->info.cinfo->value);
+			free(curnode);
+		}
 	}
 }
 
diff --git a/sys/dev/aic7xxx/aicasm/aicasm_symbol.h b/sys/dev/aic7xxx/aicasm/aicasm_symbol.h
index 485cf6c0cc0d..199e3baa779e 100644
--- a/sys/dev/aic7xxx/aicasm/aicasm_symbol.h
+++ b/sys/dev/aic7xxx/aicasm/aicasm_symbol.h
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: symbol.h,v 1.1 1997/03/16 07:08:19 gibbs Exp $
+ *      $Id: aicasm_symbol.h,v 1.2 1997/06/27 19:38:56 gibbs Exp $
  */
 
 #include <sys/queue.h>
@@ -42,6 +42,7 @@ typedef enum {
 	MASK,
 	BIT,
 	CONST,
+	DOWNLOAD_CONST,
 	LABEL,
 	CONDITIONAL
 }symtype;
diff --git a/sys/dev/aic7xxx/aicasm_gram.y b/sys/dev/aic7xxx/aicasm_gram.y
index 24f8cc9b31f2..fa657c02f0c8 100644
--- a/sys/dev/aic7xxx/aicasm_gram.y
+++ b/sys/dev/aic7xxx/aicasm_gram.y
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_gram.y,v 1.2 1997/06/27 19:38:49 gibbs Exp $
+ *      $Id: aicasm_gram.y,v 1.3 1997/09/03 03:44:40 gibbs Exp $
  */
 
 #include <stdio.h>
@@ -55,6 +55,7 @@ static symbol_ref_t none;
 static symbol_ref_t sindex;
 static int instruction_ptr;
 static int sram_or_scb_offset;
+static int download_constant_count;
 static patch_t *cur_patch;
 
 static void process_bitmask __P((int mask_type, symbol_t *sym, int mask));
@@ -74,6 +75,7 @@ static void type_check __P((symbol_t *symbol, expression_t *expression,
 			    int and_op));
 static void make_expression __P((expression_t *immed, int value));
 static void add_conditional __P((symbol_t *symbol));
+static int  is_download_const __P((expression_t *immed));
 
 #define YYDEBUG 1
 #define SRAM_SYMNAME "SRAM_BASE"
@@ -92,6 +94,8 @@ static void add_conditional __P((symbol_t *symbol));
 
 %token <value> T_CONST
 
+%token T_DOWNLOAD
+
 %token T_SCB
 
 %token T_SRAM
@@ -154,6 +158,8 @@ static void add_conditional __P((symbol_t *symbol));
 
 %type <value> ret f1_opcode f2_opcode jmp_jc_jnc_call jz_jnz je_jne
 
+%type <value> numerical_value
+
 %left '|'
 %left '&'
 %left '+' '-'
@@ -422,6 +428,7 @@ expression:
 		case BIT:
 			$$.value = symbol->info.minfo->mask;
 			break;
+		case DOWNLOAD_CONST:
 		case CONST:
 			$$.value = symbol->info.cinfo->value;
 			break;
@@ -444,10 +451,10 @@ expression:
 ;
 
 constant:
-	T_CONST T_SYMBOL T_NUMBER	
+	T_CONST T_SYMBOL numerical_value
 	{
 		if ($2->type != UNINITIALIZED) {
-			stop("Re-definition of constant variable",
+			stop("Re-definition of symbol as a constant",
 			     EX_DATAERR);
 			/* NOTREACHED */
 		}
@@ -456,6 +463,34 @@ constant:
 		$2->info.cinfo->value = $3;
 		$2->info.cinfo->define = $1;
 	}
+|	T_CONST T_SYMBOL T_DOWNLOAD
+	{
+		if ($1) {
+			stop("Invalid downloaded constant declaration",
+			     EX_DATAERR);
+			/* NOTREACHED */
+		}
+		if ($2->type != UNINITIALIZED) {
+			stop("Re-definition of symbol as a downloaded constant",
+			     EX_DATAERR);
+			/* NOTREACHED */
+		}
+		$2->type = DOWNLOAD_CONST;
+		initialize_symbol($2);
+		$2->info.cinfo->value = download_constant_count++;
+		$2->info.cinfo->define = FALSE;
+	}
+;
+
+numerical_value:
+	T_NUMBER
+	{
+		$$ = $1;
+	}
+|	'-' T_NUMBER
+	{
+		$$ = -$2;
+	}
 ;
 
 scratch_ram:
@@ -997,6 +1032,7 @@ initialize_symbol(symbol)
 		SLIST_INIT(&(symbol->info.minfo->symrefs));
 		break;
         case CONST:
+        case DOWNLOAD_CONST:
 		symbol->info.cinfo =
 		    (struct const_info *)malloc(sizeof(struct const_info));
 		if (symbol->info.cinfo == NULL) {
@@ -1088,6 +1124,10 @@ format_1_instr(opcode, dest, immed, src, ret)
 	f1_instr->source = src->symbol->info.rinfo->address
 			 + src->offset;
 	f1_instr->immediate = immed->value;
+
+	if (is_download_const(immed))
+		f1_instr->opcode_ret |= DOWNLOAD_CONST_IMMEDIATE;
+
 	symlist_free(&immed->referenced_syms);
 	instruction_ptr++;
 }
@@ -1191,6 +1231,10 @@ format_3_instr(opcode, src, immed, address)
 	f3_instr->source = src->symbol->info.rinfo->address
 			 + src->offset;
 	f3_instr->immediate = immed->value;
+
+	if (is_download_const(immed))
+		f3_instr->opcode_addr |= DOWNLOAD_CONST_IMMEDIATE;
+
 	symlist_free(&immed->referenced_syms);
 	instruction_ptr++;
 }
@@ -1230,6 +1274,7 @@ type_check(symbol, expression, opcode)
 	and_op = FALSE;
 	if (opcode == AIC_OP_AND || opcode == AIC_OP_JNZ || AIC_OP_JZ)
 		and_op = TRUE;
+
 	/*
 	 * Make sure that we aren't attempting to write something
 	 * that hasn't been defined.  If this is an and operation,
@@ -1302,3 +1347,14 @@ yyerror(string)
 {
 	stop(string, EX_DATAERR);
 }
+
+static int
+is_download_const(immed)
+	expression_t *immed;
+{
+	if ((immed->referenced_syms.slh_first != NULL)
+	 && (immed->referenced_syms.slh_first->symbol->type == DOWNLOAD_CONST))
+		return (TRUE);
+
+	return (FALSE);
+}
diff --git a/sys/dev/aic7xxx/aicasm_scan.l b/sys/dev/aic7xxx/aicasm_scan.l
index 5c354283412f..844637687363 100644
--- a/sys/dev/aic7xxx/aicasm_scan.l
+++ b/sys/dev/aic7xxx/aicasm_scan.l
@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_scan.l,v 1.3 1997/06/27 19:38:51 gibbs Exp $
+ *      $Id: aicasm_scan.l,v 1.4 1997/09/03 03:44:42 gibbs Exp $
  */
 
 #include <sys/types.h>
@@ -66,6 +66,7 @@ SPACE		[ \t]+
 	/* Register/SCB/SRAM definition keywords */
 register		{ return T_REGISTER; }
 const			{ yylval.value = FALSE; return T_CONST; }
+download		{ return T_DOWNLOAD; }
 address			{ return T_ADDRESS; }
 access_mode		{ return T_ACCESS_MODE; }
 RW|RO|WO		{
diff --git a/sys/dev/aic7xxx/aicasm_symbol.c b/sys/dev/aic7xxx/aicasm_symbol.c
index 08b0bc52ce2b..c9f645ac72e5 100644
--- a/sys/dev/aic7xxx/aicasm_symbol.c
+++ b/sys/dev/aic7xxx/aicasm_symbol.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: aicasm_symbol.c,v 1.2 1997/06/27 19:38:54 gibbs Exp $
+ *      $Id: aicasm_symbol.c,v 1.3 1997/09/03 03:44:44 gibbs Exp $
  */
 
 
@@ -92,6 +92,7 @@ symbol_delete(symbol)
 			free(symbol->info.minfo);
 		}
 		break;
+	case DOWNLOAD_CONST:
 	case CONST:
 		if (symbol->info.cinfo != NULL)
 			free(symbol->info.cinfo);
@@ -312,11 +313,13 @@ symtable_dump(ofile)
 	symlist_t registers;
 	symlist_t masks;
 	symlist_t constants;
+	symlist_t download_constants;
 	symlist_t aliases;
 
 	SLIST_INIT(&registers);
 	SLIST_INIT(&masks);
 	SLIST_INIT(&constants);
+	SLIST_INIT(&download_constants);
 	SLIST_INIT(&aliases);
 
 	if (symtable != NULL) {
@@ -344,9 +347,14 @@ symtable_dump(ofile)
 						    SYMLIST_INSERT_HEAD);
 				}
 				break;
+			case DOWNLOAD_CONST:
+				symlist_add(&download_constants, cursym,
+					    SYMLIST_INSERT_HEAD);
+				break;
 			case ALIAS:
 				symlist_add(&aliases, cursym,
 					    SYMLIST_INSERT_HEAD);
+				break;
 			default:
 				break;
 			}
@@ -446,6 +454,20 @@ symtable_dump(ofile)
 				curnode->symbol->info.cinfo->value);
 			free(curnode);
 		}
+
+		
+		fprintf(ofile, "\n\n/* Downloaded Constant Definitions */\n");
+
+		while (download_constants.slh_first != NULL) {
+			symbol_node_t *curnode;
+
+			curnode = download_constants.slh_first;
+			SLIST_REMOVE_HEAD(&download_constants, links);
+			fprintf(ofile, "#define\t%-8s\t0x%02x\n",
+				curnode->symbol->name,
+				curnode->symbol->info.cinfo->value);
+			free(curnode);
+		}
 	}
 }
 
diff --git a/sys/dev/aic7xxx/aicasm_symbol.h b/sys/dev/aic7xxx/aicasm_symbol.h
index 485cf6c0cc0d..199e3baa779e 100644
--- a/sys/dev/aic7xxx/aicasm_symbol.h
+++ b/sys/dev/aic7xxx/aicasm_symbol.h
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: symbol.h,v 1.1 1997/03/16 07:08:19 gibbs Exp $
+ *      $Id: aicasm_symbol.h,v 1.2 1997/06/27 19:38:56 gibbs Exp $
  */
 
 #include <sys/queue.h>
@@ -42,6 +42,7 @@ typedef enum {
 	MASK,
 	BIT,
 	CONST,
+	DOWNLOAD_CONST,
 	LABEL,
 	CONDITIONAL
 }symtype;
diff --git a/sys/dev/aic7xxx/sequencer.h b/sys/dev/aic7xxx/sequencer.h
index 00d1f089e852..fd6943579928 100644
--- a/sys/dev/aic7xxx/sequencer.h
+++ b/sys/dev/aic7xxx/sequencer.h
@@ -36,7 +36,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $Id: sequencer.h,v 1.1 1997/03/16 07:08:18 gibbs Exp $
+ *      $Id: sequencer.h,v 1.2 1997/06/27 19:38:52 gibbs Exp $
  */
 
 struct ins_format1 {
@@ -44,6 +44,7 @@ struct ins_format1 {
 	u_int8_t source;
 	u_int8_t destination;
 	u_int8_t opcode_ret;
+#define DOWNLOAD_CONST_IMMEDIATE 0x80
 };
 
 struct ins_format2 {