diff --git a/sys/src/cmd/acid/acid.h b/sys/src/cmd/acid/acid.h
index bd0d6b7cb..41f63db4f 100644
--- a/sys/src/cmd/acid/acid.h
+++ b/sys/src/cmd/acid/acid.h
@@ -29,6 +29,8 @@ typedef struct Frtype	Frtype;
 Extern int	kernel;
 Extern int	text;
 Extern int	silent;
+Extern int	fsize[];
+Extern char	afmt;
 Extern Fhdr	fhdr;
 Extern int	line;
 Extern Biobuf*	bout;
diff --git a/sys/src/cmd/acid/builtin.c b/sys/src/cmd/acid/builtin.c
index 0ebc11bbf..b8d904c7b 100644
--- a/sys/src/cmd/acid/builtin.c
+++ b/sys/src/cmd/acid/builtin.c
@@ -87,7 +87,7 @@ struct Btab
 	0
 };
 
-char vfmt[] = "aBbcCdDfFgGiIoOqQrRsSuUVWxXYZ38";
+char vfmt[] = "aABbcCdDfFgGiIoOqQrRsSuUVWxXYZ38";
 
 void
 mkprint(Lsym *s)
@@ -365,7 +365,7 @@ follow(Node *r, Node *args)
 	for(i = 0; i < n; i++) {
 		l = al(TINT);
 		l->ival = f[i];
-		l->fmt = 'X';
+		l->fmt = 'A';
 		*tail = l;
 		tail = &l->next;
 	}
@@ -390,11 +390,11 @@ funcbound(Node *r, Node *args)
 		r->l = al(TINT);
 		l = r->l;
 		l->ival = bounds[0];
-		l->fmt = 'X';
+		l->fmt = 'A';
 		l->next = al(TINT);
 		l = l->next;
 		l->ival = bounds[1];
-		l->fmt = 'X';
+		l->fmt = 'A';
 	}
 }
 
@@ -970,10 +970,14 @@ void
 patom(char type, Store *res)
 {
 	int i;
+	char fmt;
 	char buf[512];
 	extern char *typenames[];
 
-	switch(res->fmt) {
+	fmt = res->fmt;
+	if(fmt == 'A')
+		fmt = afmt;
+	switch(fmt) {
 	case 'c':
 		Bprint(bout, "%c", (int)res->ival);
 		break;
@@ -1065,7 +1069,6 @@ patom(char type, Store *res)
 			Bprint(bout, "%S", (Rune*)res->string->string);
 		break;
 	case 'a':
-	case 'A':
 		symoff(buf, sizeof(buf), res->ival, CANY);
 		Bprint(bout, "%s", buf);
 		break;
@@ -1117,10 +1120,7 @@ comx(Node res)
 	Lsym *sl;
 	Node *n, xx;
 
-	if(res.fmt != 'a' && res.fmt != 'A')
-		return 0;
-
-	if(res.comt == 0 || res.comt->base == 0)
+	if(res.fmt != 'a' || res.comt == 0 || res.comt->base == 0)
 		return 0;
 
 	sl = res.comt->base;
diff --git a/sys/src/cmd/acid/expr.c b/sys/src/cmd/acid/expr.c
index 4ba0943c2..cd24ec7b8 100644
--- a/sys/src/cmd/acid/expr.c
+++ b/sys/src/cmd/acid/expr.c
@@ -6,7 +6,7 @@
 #define Extern extern
 #include "acid.h"
 
-static int fsize[] =
+int fsize[] =
 {
 	['A'] 4,
 	['B'] 4,
@@ -149,7 +149,7 @@ oframe(Node *n, Node *res)
 
 	res->ival = ival;
 	res->op = OCONST;
-	res->fmt = 'X';
+	res->fmt = 'A';
 	res->type = TINT;
 
 	/* Try and set comt */
diff --git a/sys/src/cmd/acid/list.c b/sys/src/cmd/acid/list.c
index 5ad7c54e4..be0c3362b 100644
--- a/sys/src/cmd/acid/list.c
+++ b/sys/src/cmd/acid/list.c
@@ -185,7 +185,7 @@ listvar(char *s, vlong v)
 	l->string = strnode(s);
 	l->next = al(TINT);
 	l = l->next;
-	l->fmt = 'X';
+	l->fmt = 'A';
 	l->ival = v;
 
 	return tl;
@@ -260,7 +260,7 @@ trlist(Map *map, uvlong pc, uvlong sp, Symbol *sym)
 	l = al(TINT);			/* Function address */
 	q->l = l;
 	l->ival = sym->value;
-	l->fmt = 'X';
+	l->fmt = 'A';
 
 	l->next = al(TINT);		/* called from address */
 	l = l->next;
diff --git a/sys/src/cmd/acid/main.c b/sys/src/cmd/acid/main.c
index 0ef9f65cf..9a18f5f53 100644
--- a/sys/src/cmd/acid/main.c
+++ b/sys/src/cmd/acid/main.c
@@ -281,7 +281,7 @@ readtext(char *s)
 	if(mach->sbreg && lookup(0, mach->sbreg, &sym)) {
 		mach->sb = sym.value;
 		l = enter("SB", Tid);
-		l->v->fmt = 'X';
+		l->v->fmt = 'A';
 		l->v->ival = mach->sb;
 		l->v->type = TINT;
 		l->v->set = 1;
diff --git a/sys/src/cmd/acid/util.c b/sys/src/cmd/acid/util.c
index b47d4cbbb..46431f75e 100644
--- a/sys/src/cmd/acid/util.c
+++ b/sys/src/cmd/acid/util.c
@@ -7,6 +7,7 @@
 #include "acid.h"
 #include "y.tab.h"
 
+char afmt = 'X';
 static int syren;
 
 Lsym*
@@ -88,7 +89,7 @@ varsym(void)
 			l->v->type = TINT;
 			l->v->ival = v;
 			if(l->v->comt == 0)
-				l->v->fmt = 'X';
+				l->v->fmt = 'A';
 
 			/* Enter as list of { name, type, value } */
 			list = al(TSTRING);
@@ -101,7 +102,7 @@ varsym(void)
 			list->ival = s->type;
 			list->next = al(TINT);
 			list = list->next;
-			list->fmt = 'X';
+			list->fmt = l->v->fmt;
 			list->ival = v;
 
 		}
@@ -122,6 +123,12 @@ varreg(void)
 	Reglist *r;
 	List **tail, *li;
 
+	if(mach->szaddr == 8){
+		afmt = 'Y';
+		fsize['a'] = fsize[afmt];
+		fsize['A'] = fsize[afmt];
+	}
+
 	l = mkvar("registers");
 	v = l->v;
 	v->set = 1;