> it's just a function of the primitive state of the industry at that time I'll expand on that idea. Basically, very little on a C64 or similar machine of the

> it's just a function of the primitive state of the industry at that time I'll expand on that idea. Basically, very little on a C64 or similar machine of the time was standardised and interchangeable or "insulated" from the rest of the system. Nor were applications insulated from the hardware. You couldn't upgrade the speed of the CPU, or replace the gfx chip without breaking a ton of software. The modular nature of computer systems today simply didn't exist back then. So upgrades had to be system wide upgrades of everything in many cases, basically whole new systems and new software would have to be written for them.