/vr/ - Retro Games

>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.


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>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.

>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.

>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.

>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.

>Finding Variables With Cheat Search for FCEUX: A Primer

See animated image for a rundown of the Cheat Search window.

One way to find where data is stored in RAM is with the Cheat Search. The Cheat search works by making a list of every ram location and the value in that address at that point in time, then paring it down based on how that value changes.

So to start play the game until the variable you want to track down is sure to be loaded and hit the "Reset" button (on the Cheat Search Window!) That will populate the list on the right with every address in ram. Now start playing a bit of the game, then narrowing down the results.
If you think you know the exact value, you can put it in the box next to the "Known Value" button and hit the button.
If you know the value hasn't changed, use the "Equal" button.
"Not Equal", "Greater Than", and "Less Than" are as they say, but if you know exactly how much the value has changed by, you can put that in the box next to the button, and check the check box between them, to specify the parameters for that search.

This way you can easily narrow down the possible addresses to a few locations. If you mess up, or don't find it, just hit "Reset" and start over.

Some things to note:
1) This can only do 8bit values, anything that goes higher than 255 will be stored among two or more bytes and this cheat search will be of less help.
2) The value may not be kept as straightforward as you think. It may be stored in an unpacked Binary Coded Decimal format, or based on the display tile, or maybe the value is calculated as needed whenever called for.
3) The search only acts on the values in the results of the previous search. "Reset" will start the search over with the current ram. Keep this in mind if the game happens to briefly swap chunks of memory around at regular intervals. Notice the option at the bottom of the window.