8 Feb
2018
8 Feb
'18
8:56 p.m.
On 02/08/2018 07:18 PM, Eric Smith via cctalk wrote:
At some point I read an article or a transcript of an
interview with an
Intel employee (or former employee) who had been involved with the design
of the 8085, describing how he had specified additional instructions over
those of the 8080, and they had been implemented in the silicon, but then
the decision was made to not document any of the new instructions other
than RIM and SIM.
I no longer recall which Intel employee that was, and can't find the
article or interview. Does anyone else remember that, and perhaps have a
copy?
Do you mean Cort Allen? His email a couple of years ago was:
manofquest at aol.com
He wrote;
Actually, all of these instructions were 100% tested when they were
manufactured at Intel. The test program used to test these devices
contained all of these instructions and was written to do an extensive
test on ALL instructions in many combinations and order. So, unless the
8085 broke after it was shipped, these instructions were tested and were
working.
I know this because I was the Test Engineer at Intel that developed the
8085 Production Test Program. I wrote all the code for this test and it
ran on a Megatest @8000 test system.