22 Feb
2019
22 Feb
'19
2:47 p.m.
On 2/22/19 11:27 AM, bzs@theworld.com wrote:
I don't know the high-water mark for the number of IMPs or more specifically how many existed on the NCP->TCP flag day but I'm pretty sure the theoretical maximum was 256 tho no doubt someone had a way to extend that. But, w/o extensive changes, 256, probably 254, not sure 0 or 255 could be an IMP number, whatever!
There was no node 0 or 255. So the number of nodes was capped at 254. For each node, there were subnodes so that multiple computers at each location could be addressed. It wasn't a full 8-bit field.