The first challenge was finding a name I could use. I guess mid-thirties is a little late to come to blogging. Although I do remember gopher, if that scores me any nerd points (25 quid to the first person who can tell me the relevance of P0PP051000*)
* – promise of money may contain only trace amounts of your recommended daily dose of truth and fact
Jim said,
January 25, 2009 @ 1:37 am
P0PP051000 brings back memories. It was a machine language instruction for the fantastic Singer System 10 computer. This instruction is an unconditional branch to memory address 1000. Used it many, many, times in troubleshooting
chris said,
November 25, 2009 @ 1:41 pm
p0pp051000 – yep
singer system 10, then ICL system 10 and 25
Branch instruction is 01011
P in binary is 0101000
0 in binary is 0011000
P in binary is 0101000
P in binary is 0101000
0 in binary is 0011000
3rd bit in reads 01011
then the 51000
5 is a code for the branch, in this case branch unconditinal, to address 1000
usually to effect a system restart.
Jimbo said,
January 12, 2010 @ 6:25 pm
pop oh 5 to a thousand is what we would tell a computer operator calling us at home when our System 10 programs blew up back in the early to mid 70′s. Basically, as the folks stated above, it was an unconditional branch to memory location 1000 where everyone coded their file closes and clean-up routines. Most shops had this standard. Those were the days