Concatenating data against a row

Hi,
I want to concatenate data from Field2 by grouping against Field1 data. I have provided below the sample data,
from this I want to get output like,
1, 'ABC/XYZ/123'
2, 'TEST1/TEST2'
I do not want to do pivoting as well, since it involves hard coding field's data. I want to do it dynamically using
a single query itself.
I have given below the script I used to get the same using CURSOR.
Please give me the other alternatives available for the same.
create table tmp_dev_t1
(f1 int,
f2 varchar(10))
insert into tmp_dev_t1
values(1, 'ABC')
go
insert into tmp_dev_t1
values(1, 'XYZ')
go
insert into tmp_dev_t1
values(1, '123')
go
insert into tmp_dev_t1
values(2, 'TEST1')
go
insert into tmp_dev_t1
values(2, 'TEST2')
go
DECLARE @Cur_t1 CURSOR, @f1 int, @v_result varchar(100)
SET @Cur_t1 = CURSOR FAST_FORWARD FOR SELECT DISTINCT f1 from tmp_dev_t1
OPEN @Cur_t1
FETCH NEXT FROM @Cur_t1 INTO @f1
WHILE @@FETCH_STATUS=0
BEGIN
SET @v_result = ''

SELECT @v_result = @v_result + f2 + ',' FROM tmp_dev_t1 a
WHERE f1 = @f1

PRINT @f1
PRINT @v_result

FETCH NEXT FROM @Cur_t1 INTO @f1
END
CLOSE @Cur_t1
DEALLOCATE @Cur_t1
Thank you.