FPGA VAX update, now DIY TTL computers

[Roger Merchberger]

Rumor has it that a.carlini at ntlworld.com may have mentioned these words:

>There was a spate of "fake parity" memory around some time in
>the 90s. Quite why it was cheaper to add a chip that always
>supplied "correct" parity rather than simply using additional
>memory was something that I never understood.

Think of it this way:

Memory - lots of transistors per cell == $$
Fake Parity - only a few transistors[1] to fake it == less $$.

The fake parity chip was something like less than 1/10 the cost of a memory 
chip, so if you could add (admittedly non-working) parity memory for a 1% 
increase in cost compared to real parity at 12.5% increase in cost... yea, 
my math ain't perfect, neither is my grammar - you get the picture. ;-)

That's why most Americans are happy with Butt^H^Hd Light.
:-/ [[Blech!]]

Laterz,
Roger "Life's too short to drink cheap beer" Merchberger

[1] relatively speaking, of course.

--
Roger "Merch" Merchberger   | Anarchy doesn't scale well. -- Me
zmerch at 30below.com.         |
SysAdmin, Iceberg Computers