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68000 - The CPU ahead of its time

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exxos
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68000 - The CPU ahead of its time

Post by exxos »

Interesting video which popped up in my feed earlier... I spied a TF card in the mix...


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rubber_jonnie
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Re: 68000 - The CPU ahead of its time

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An interesting watch, marred only by spelling Motorola as Motorolla quite a few times early on!

Am I OCD, perhaps...
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Re: 68000 - The CPU ahead of its time

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rubber_jonnie wrote: Fri Apr 25, 2025 11:25 pm An interesting watch, marred only by spelling Motorola as Motorolla quite a few times early on!

Am I OCD, perhaps...
I didn't notice that. But I think he called the CPU internal 16bit by mistake at one point.. :shrug:

I'm not sure he mentioned the idea of 32bit was to make the codebase future proof for the future 32bit cpus. He talks about registers and code a bit... Wasn't really paying much attention as been really tired today :lol: :roll:
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Re: 68000 - The CPU ahead of its time

Post by Cyprian »

exxos wrote: Fri Apr 25, 2025 11:36 pm I didn't notice that. But I think he called the CPU internal 16bit by mistake at one point.. :shrug:
Because 68000/8/10/12 are internally 16 bit :)
They can operate on 32bit data but in 16bit chunks:

add.w D0,D1 <-- 4 cpu cycles
add.l D0,D1 <-- 8 cpu cycles
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