If i remember correctly, they wrote BASIC for it, (language design) and then pitched it to altair, who then gave them an actual altair to implement it on, no? Btw, wasn't programming without actual access to a PC, pretty common back then too? (even decades later, when u had decent computers). From what i hear from my dad, programmers wrote it out on paper, and sent it to the data entry people who would type it in, run it, and report any bugs etc. Heck, imagine debugging without access to a PC!!
