zlacker

[return to "Building a 24-bit arcade CRT display adapter from scratch"]
1. zahlma+4h[view] [source] 2026-02-04 18:43:04
>>evakho+(OP)
> I like the Raspberry Pi RP2040 a lot. It's relatively cheap (around $1 USD) and has tons of on-board RAM - 264 KB in fact! It also has what is called Programmable IO, or PIO.

I wonder how benchmarks would compare between the RP2040 and, say, a Z80.

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2. burnte+rk[view] [source] 2026-02-04 18:59:02
>>zahlma+4h
It would destroy the Z80. It's a 32bit, dual core CPU running at 133MHz. Even single cored it'll thrash a Z80. Heck, I bet you could create a drop-in replacement board for the Z80 using an RP2040.
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3. ge96+cl[view] [source] 2026-02-04 19:01:33
>>burnte+rk
Crazy what you can buy nowadays like the Teensy 4.0 with 600MHz base clock

Granted that's $20 not $1

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4. MPSimm+5r[view] [source] 2026-02-04 19:30:10
>>ge96+cl
My sweet spot of choice between power and price is the ESP32 S3 (2x core @ 240mhz) at ~$6 per board, but yeah, the power to dollar ratio is crazy these days, across the board. And they are absolutely tiny and sip power if you write the code well.
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