Comment by fortyrod

The university I went to had used Xerox Sigma 6/7/9s. One of them is now in the living computer museum. Yeah! After programming 6502 assembler in high school, having multiple blocks of 16 32-bit registers was breath-taking. My brain was wired to the 6502 X/Y/A thing so I doubt I ever used more than 5-6 of them at a time. After doing a lot of 8-bit micro and X86 assembly, doing ARM assembly for the first time felt similarly freeing.