4 ms·
lBorn with a manual in one hand and a PDP11 in the other.
by ungamedplayer 4y ago
lBorn with a manual in one hand and a PDP11 in the other.
- marginalia_nu 4y agoCouldn't get to sleep without hugging my K&R.
- sgt 4y agoI don't know, PDP11's are pretty heavy. That'd be one flat hand.
- __d 4y agoThere's always the LSI11 for those of us with .. compressible appendages.
- pklausler 4y agoYou kids with your shiny PDP-11s. Me, I had to start out with a machine that didn't even have load or store instructions (CDC 6600).
- drivers99 4y agoOut of curiosity, I checked wikipedia which says "In the 6600, loading the value from memory would require one instruction, and adding it would require a second one" so I'm curious what the distinction is if it's not a load instruction
- pklausler 4y agoThe address registers were paired up with the data registers, so modifying A1 would cause an implicit load into X1, for example. A6 and A7 modifications caused implicit stores from X6/X7. So with careful register assignment and some offset initialization of address registers beforehand, array processing loops could be encoded in remarkably few instructions.