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7 posts
How the Amiga's CPU, shared memory, display coprocessor, blitter, audio, and multitasking software formed a distinctive 1980s computer platform.
A technical history of the Apple II's 6502, color video, memory map, expansion slots, cassette-to-disk transition, and software ecosystem.
A technical history of the Cray-1's vector registers, chaining, memory system, scalar performance, and role in scientific computing at NCAR.
How IBM's 1964 System/360 replaced incompatible product lines with a shared architecture, standard byte and I/O model, and a difficult software transition.
Explore the MOS 6502's register model, addressing modes, low-cost strategy, system interfaces, and role in early home computers and game consoles.
How DEC's VAX-11/780 combined PDP-11 compatibility with a larger virtual address architecture, a new processor implementation, and VMS.
How the Z80 added registers, addressing modes, bit operations, and interrupt options while preserving a path for 8080-era software and systems.