Re: Help decoding a vax instruction

[Anders Magnusson <ragge%ludd.ltu.se@localhost>]

Den 2019-08-21 kl. 12:11, skrev coypu%sdf.org@localhost:
> hi folks,
>
> I'm a vax newbie. What does this one do?
>
>     c:	98 40 a0 02 	cvtbl 0x2(r0)[r0],15 <e+0x15>
Heh!

cvtbl = sign-extend byte into long

2(r0)[r0] = 2+r0+sizeof(byte)*r0.  Indexing, similar exists on x86. Uses 
source size (b) for indexing size.

15 = address 15 in memory.

-- R