hardware multiply/divide functionality in CPUs
eric at brouhaha.com
Tue Mar 8 20:06:56 CST 2011
Chuck Guzis wrote:
> If you weren't DoD-related, you could forget getting the 9440, 9445,
> 9450...CPUs. Fairchild wouldn't give you the time of day on those.
Not true, at least going by my conversations with distributors at the
time. They were sold through normal commercial distribution, to anyone
willing to purchase the minimum order quantity, which was around 30
parts if memory serves. Since they were rather expensive parts, that
didn't include me.
Since the 9450 implemented the MIL-STD-1750A architecture, obviously the
main customers were defense contractors and their subcontractors, but a
friend who worked for a commercial avionics company said that they used
it in some non-defense products as well. That suggests that the 9450
pricing was sufficiently reasonable that if you had a 1750A codebase
that you wanted to use in a commercial product, it was viable to use the
The Fairchild Nova-compatible parts might have seen more non-military
use than the 9450, but I don't have even anecdotal evidence of that.
> Same for the I2L versions of the TI 9900.
Like the Fairchild parts, the SBP9900 was sold through distribution. It
appeared in TI's OEM price list, though I don't recall the price.
More information about the cctalk