Hi Martin,
Why not use
X ::= SEQUENCE {
padding BIT STRING (SIZE(10))('0000000000'B),
a A
}
where A is the choice below with two items? If you add more items to the
choice, you reduce the size of the size of the bit string correspondingly.
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On Fri, 4 Mar 2005, Martin Andersson (EAB/RGV/E) wrote:
> Hello.
>
> I have this question about CHOICE
>
> Imagine the following.
>
> A ::= CHOICE {
> something-a INTEGER,
> something-b INTEGER
> }
>
> I'm using Unaligned PER and need the index for this to be encoded with 11
> bits.
> To accomplish this today I have put in lots of NULL after the INTEGER
> So it looks something like this.
>
> A ::= CHOICE {
> something-a INTEGER,
> something-b INTEGER,
> spare-2 NULL,
> .... and so on
> spare-2047 NULL
> }
>
> As you can imagine this is not very nice. Is there anything in ASN.1 that can
> help me with this.
> So I don't have to get this xtremly lengthy A :: CHOICE
>
> brg/Martin
>
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