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 Tridora-CPU - an FPGA stack machine CPU for Pascal 
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Joined: Mon Oct 07, 2019 2:41 am
Posts: 791
The CMOS version of the PDP 8 had a stack. IF I was redesigning the 8 , I would have 002X as auto decrement resisters that map to 001x
and Jump to subroutine pushes the PC using 17 as the stack.


Wed May 28, 2025 2:04 am

Joined: Sun Oct 20, 2024 9:43 pm
Posts: 7
oldben wrote:
The CMOS version of the PDP 8 had a stack. IF I was redesigning the 8 , I would have 002X as auto decrement resisters that map to 001x
and Jump to subroutine pushes the PC using 17 as the stack.


Ah, didn't know that, interesting. Come to think of it, the PDP-8 had quite a long lifespan if you count the microprocessor versions and considering the (for the 1970s) limited architecture.


Wed May 28, 2025 10:57 pm
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