Aucbvax.5399
net.2bsd-bugs
utzoo!decvax!ucbvax!dist2
Sun Dec 6 03:21:11 1981
FIXED: the ecc algorithm in kernel/sys/dev/hp.c
The ecc algorithm in hpecc() is not correct. The corrections
needed are:
diff kernel/sys/dev/hp.c.old kernel/sys/dev/hp.c
434a435
> ocmd = (rp->hpcs1.w&~DRY)|IE|GO;
450c451
b_bcount && wrong!=0 )
---
> while( 0<=BYTE BYTE<BP- &&>b_bcount && (wrong<<=BIT)!=0 ) < 462D462 464C464 PUTMEMC(ADDR,GETMEMC(ADDR)^WRONG); WRONG --- <<="bit;"> putmemc(addr,getmemc(addr)^(int)wrong);
469a470,471
> /*getmemc() changes pri. might be a race.*/
> spl5();
479d480
hpcs1.w&~DRY)|IE|GO;
The changes are necessary on tapes written before 12/5/81.
Carl
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