10 Jun
2012
10 Jun
'12
9:40 a.m.
On Sun, Jun 10, 2012 at 9:33 AM, Jos Dreesen <jdr_use at bluewin.ch> wrote:
Any idea why a 16 bits system would have a 21 bit wide
semiconductor memory.
?
The core memory boards for the same system are 32kx16 bit.
I'm certain that it uses 21 bits so it can correct single bit errors
and detect double-bit errors. This is known as the Hamming code. For
16 data bits, it requires 5 parity bits.
Camiel.