/cch/ - Casio Calculator Hacking

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

RF-DBG stuff is allowed on BeuChan Anonymous ## Admin 07/02/25 (Wed) 05:48:40 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: 1754813651014.png (1.55 KB, 288x108, image.png)

Anonymous 08/10/25 (Sun) 08:14:11 No.19 [Reply]

unused underline notation in ES PLUS

Anonymous 10/06/25 (Mon) 14:48:24 No.22

are you sure it is unused on all models?

Anonymous 10/14/25 (Tue) 10:19:37 No.50

idk of any models that use this style

File: 1757918192473.jpg (246.92 KB, 810x1080, Real Calc Image Sample.jpg)

Patched ROM JP900CW or real ROM Anonymous 09/15/25 (Mon) 06:36:33 No.21 [Reply]

Hello guys, just asking, does someone here have a patched fx-JP900CW emu ROM or a Real ROM? If yes I would like to know. Thanks (note: the photo is not mine, it's from the internet.)

Anonymous!!zc2RRF.Z/A 10/14/25 (Tue) 10:15:49 No.49

I do have a real ROM, but it's not mine. Most ROMs nowadays are held by private collectors, so it's quite hard to get a hold of them.

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

Anonymous 08/01/25 (Fri) 09:11:43 No.17 [Reply]

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

Anonymous ## Mod 08/10/25 (Sun) 08:05:00 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.

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

Graph Light interface for nx u8 emu Baeijifa 07/13/25 (Sun) 13:44:04 No.16 [Reply]

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

Graph Light interface for nx u8 emu Bajiefa 07/06/25 (Sun) 04:18:14 No.13 [Reply]

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

sage sage 07/07/25 (Mon) 13:18:46 No.14

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

File: 1751367498911.png (637.32 KB, 1515x907, Screenshot 2025-01-03 0341….png)

casioemu on roblox Anonymous 07/01/25 (Tue) 10:58:19 No.1 [Reply]

wip but kinda works

Anonymous 07/02/25 (Wed) 06:53:25 No.10

>>3
sage heil!

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

Anonymous 07/02/25 (Wed) 06:08:44 No.9 [Reply]

ML620Q909 (Classwiz CW)

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

Anonymous 07/02/25 (Wed) 06:07:21 No.8 [Reply]

ML620Q906 (Classwiz X) pin layout

File: 1751368231764.png (37.78 KB, 1059x198, Screenshot 2025-07-01 1810….png)

Anonymous 07/01/25 (Tue) 11:10:31 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.

Anonymous 07/01/25 (Tue) 13:47:19 No.4

this has been known for years

Anonymous 07/01/25 (Tue) 15:20:01 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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