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Destroyed PSNee_V**.ino (markdown)

kalymos
2026-03-22 12:10:04 +01:00
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PSNee_V**.ino.md

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This file is the heart of the project, and I will try to explain its content to you as best I can, in the order of appearance.
### Select your chip
And the place where you choose the architecture of your MUC. For more details, see the MUC.h page
### Select your console
Here is the selection of your target PS1. The details of the targets can be found on the config.h page
### Options
**#define PATCH_SWICHE**
and useful on some Japanese console models to disable the BIOS patch, in the case of using a Japanese game. To use it, you must add a switch between PIN_SWITCH and GND
**#define LED_RUN**
allows you to activate the LED of the Arduino board when the program injects the region code or modifies the BIOS reading
pointer and variable section
### pointer and variable section
pointer to other files in the code
**#include "MUC.h"**
**#include "parameters.h"**
**#include "BIOS_patching.h"**
Specific constant for region code injection
**#define DELAY_BETWEEN_BITS 4000** Defines the injection rate of region code bits.
**#define DELAY_BETWEEN_INJECTIONS 90** Defines the time between the different injection cycles.
**#define HYSTERESIS_MAX 14** This value is used to simulate the reaction time of reading the CD. This value was defined after experimentation on functional but very used players, on players in good condition I could see that it was functional at a value of 5, and that depending on the console could increase it up to 200-250, in rare cases it is possible that increasing this value is necessary.
Variable of the different clocks allowing to do without Arduino libraries
**volatile uint8_t count_isr = 0;** Interrupt counter generated by the internal clocks of the MUC
**volatile uint32_t microsec = 0;** Clock in microseconds
**Volatile uint16_t millisec = 0;** Clock in milliseconds
### Code section
Interrupt Service Routine function for clock increment.
**ISR(CTC_TIMER_VECTOR)**
This interrupt function uses the register definitions in the MUC.h file, to increment the clocks, bypassing the Arduino libraries.
clock reset function.
**void Timer_Start()**
This function is used before BIOS patch and region code injections. To clear the internal clock registers, and to turn on the interrupt register for the clock function.
Clock stop function.
**void Timer_Stop()**
Used at the end of injection cycles, to reset clock registers, clear the internal interrupt register, and reset clock variables.
**void Init()**
Clear the Timer/Counter Registe.
Set the Output Compare Register.
Set the Timer/Counter Control Register A.
Set the Timer/Counter Control Register B.
This first series of operations is used to set the internal clock to 100KHz.
Initializes the external switch, for disabling the bios patch.
Initializes the LED of the Arduino cards.
Allows global interrupts from an external signal.
Initializes the two pins that are used for signal input, for region injection.