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/cch/ - Casio Calculator Hacking

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File: 1751435320743.jpg(42.67 KB, 640x640, UEASEW^COMPILER.jpg)

 No.7[Reply]

Discussion of ROM Flashing and Hardware Debugging (RF-DBG) is allowed on BeuChan
ROM sharing and discussion of community debuggers (PicoEASE, etc) are also allowed on BeuChan
However, it is still banned on the main Casio Calculator Hacking Discord server (CCHD)
Do NOT post links to or screenshots of RF-DBG related BeuChan threads/posts in the CCHD Discord server


File: 1754039503483.jpg(6.27 MB, 4096x2304, IMG20250801171101.jpg)

 No.17[Reply]

Hello everyone, just asking, since ROM sharing is allowed here, does anybody have a 570EX CY-234 VerF real ROM?

 No.18

I do (it's CY-235 fx-991EX, but the 2 models have pretty much identical ROMs), but the ROM's not mine, and I don't think its owner would be happy if I share it here.

 No.20

>>18
Hey there /cch/ mod
What's it like to be a fatty?
I'm behind a thousand proxies
So that I can call you sweaty
Yes I can
You ruin all threads on BeuChan
Is that part of your plan?

Hey there, /cch/ mod
Don't you worry about the money
I'm sure you leave you basement
And then ask your deal old Mummy
For some cash
To increase your Hot Pocket stash
Post too long. Click here to view the full text.



File: 1754813651014.png(1.55 KB, 288x108, image.png)

 No.19[Reply]

unused underline notation in ES PLUS


File: 1752414244063.png(372.78 KB, 501x1062, interface.png)

 No.16[Reply]

This is an interface.png file for nx u8 emulator, the model is Graph Light


 No.15[Reply]

First, wait until you're 18+.
Second, wait for someone smash your b005s.(USER WAS BANNED FOR THIS POST)


 No.13[Reply]

This is an interface.png file for nx u8 emulator, the model is Graph Light

 No.14

>name without tripcode
>actual email address in email field
newfag detected
sage goes in all fields



 No.1[Reply]

wip but kinda works

 No.3

roblox is 4 fags
sage in every field(USER WAS BANNED FOR THIS POST)

 No.10

>>3
sage heil!



File: 1751436524415.png(5.19 MB, 1740x2546, ML620Q909.png)

 No.9[Reply]

ML620Q909 (Classwiz CW)


File: 1751436441593.png(5.88 MB, 1621x2250, ML620Q906.png)

 No.8[Reply]

ML620Q906 (Classwiz X) pin layout


 No.2[Reply]

If you take a look in an emulator ROM (the ROM that comes with Casio official emulators), you may find weird error strings, including strings like "SD Card is protected", "invarid Error" (sic), …

Why are they there?

Actually, it's part of Casio's custom emulator keyboard system; basically, yes, it's a debug feature. If you take a look at address 9838H (data segment depends on model type) you will see these get written there whenever there is an error.

 No.4

this has been known for years

 No.5

>>2
don't know if it has been mentioned a ton of times, but they left the port0 test code



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