DIYing a plug that fits the PlayStation's parallel port to boot from a ROM

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prochazkaml
Curious PSXDEV User
Curious PSXDEV User
Posts: 27
Joined: Jan 22, 2021
I am a: Student & Programmer
PlayStation Model: SCPH-7502
Discord: prochazkaml#4853
Location: Czech Republic
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Post by prochazkaml » August 6th, 2022, 8:46 pm

Alright. Bit of an insane idea:

DigiKey appears to be the only store where the correct 68-pin connector is available, but their shipping rates to the Czech Republic are astronomical (1300 CZK ? 54 USD!!). Of course, they give you free shipping when your shopping cart value is over 1300 CZK (without VAT, so you actually have to buy over 1573 CZK to get free shipping), but I couldn't care less.

In contrast, Farnell has way better shipping rates (around 200 CZK including VAT), but they only stock a 50 pin version of the same connector (they're identical in every other way). So I thought that I could buy 2 of these, chop them up, join them together and end up with a bit flaky, but hopefully functional 68 pin connector. Each one costs 74 CZK, which is less than half of the 68 pin connector sold on Digikey (154 CZK), so overall, it's actually cheaper. If it ends up working, that is.

Image

So I ordered 2 pieces (along with some other stuff, including a 512 kB 3.3 V parallel flash chip for the final cart). We'll see how it goes.
Development Console: SCPH-7502 with 2MB RAM, some random modchip and a custom 2.54 mm (0.1") pin header for easy access to the serial port using my Propeller Plug.

PlayStation Development PC: Arch Linux, Ryzen 5 3500U at up to 3700MHz, 20GB SDRAM, no dedicated PSX dev hardware, 19" Fujitsu Siemens X19, some cheap composite to VGA adapter, Hitachi GP60NB60 CD/DVD burner and an integrated chiclet keyboard.

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