/cch/ - Casio Calculator Hacking

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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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