Intel SL3VS - Celeron 633 MHz Processor Specification page 97

C16. DAS—Decimal Adjust AL after Subtraction
The Intel Architecture Software Developer's Manual, Vol 2: Instruction Set Reference , on page 3-175
currently states:
Operation
IF (AL AND 0FH) > 9 OR AF = 1
THEN
AL ← A L - 6;
CF ←CF OR CarryFromLastAddition; (* CF OR carry from AL ←AL - 6 *)
AF ←1;
ELSE AF ←0;
FI;
IF ((AL > 9FH) or CF = 1)
THEN
AL ←AL - 60H;
CF ←1;
ELSE CF ←0;
FI;
It should state:
Operation
old_AL ← AL;
old_CF ← CF;
CF ← 0;
IF (((AL AND 0FH) > 9) or AF = 1)
THEN
AL ← A L - 6;
CF ←old_CF or (Borrow from AL ←AL - 6);
AF ←1;
ELSE
AF ←0;
FI;
IF ((old_AL > 99H) OR (old_CF = 1))
THEN
AL ←AL - 60H;
CF ←1;
ELSE
CF ←0;
FI;
®
INTEL CELERON® PROCESSOR SPECIFICATION UPDATE
89