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@@ -26,38 +26,29 @@ Is developed by the psxdev team
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This PsNee version is meant for Arduino boards.
16Mhz and 8Mhz variants are supported. "Pro Micro" etc supported and recommended
ATtinys should be able to do this as well; requires a bit of porting and testing
"Arduino Pro Micro" has a different pin assignment and needs porting. (ToDo)
PAL PM-41 support isn't implemented here yet. Use PsNee v6 for them.
NTSC-U/J PM-41 are supported with PU22_MODE.
PAL PM-41 support isn't implemented yet. (ToDo)
By default, this code is multi-region. You can optimize it for your console, if you want to.
Choose the correct inject_SCEX() for your console region.
e = Europe / PAL
a = North America / NTSC-U
i = Japan / NTSC-J
This code is multi-region, meaning it will unlock PAL, NTSC-U and NTSC-J machines.
Use #define PU22_MODE for PU-22, PU-23, PM-41 mainboards.
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Old readme!
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PsNee, an open source stealth modchip for the Sony Playstation 1, usable on
all platforms supported by Arduino, preferably ATTiny. Finally something modern!
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TL;DR
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Look for the "Arduino selection!" section and verify the target platform. Hook up your target device and hit Upload!
BEWARE: when using ATTiny45, make sure the proper device is selected (Extra=>Board=>ATTiny45 (internal 8MHz clock))
and the proper fuses are burnt (use Extra=>Burn bootloader for this), otherwise PsNee will malfunction. A tutorial on
uploading Arduino code via an Arduino Uno to an ATTiny device: http://highlowtech.org/?p=1695
Look at the pinout for your device and hook PsNee up to the points on your Playstation.
Pin assignments
MultiMode V3 PSNee ramen3 PlayStation
chip pin name Arduino pin name ps pin Name
pin-1 = 3.5v Arduino pin-vin = 3.5v 3.5v = supply
pin-5 = « Gate » Arduino pin-8 = gate_wfck 9 IC732.Pin-5 = WFCK
pin-6 = data output Arduino pin-8 = data 8 IC732.Pin-42 = CEO
Arduino pin-10 = subq 7 IC304.Pin-24 = SUBQ
Arduino pin-11 = sqck 6 IC304.Pin-26 = SQCK
pin-8 = gnd Arduino Pin-Gnd = gnd GND = gnd
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General info!
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