FeFF

Possibly a Robot

[FeFF @ByteOrderMarc]

Had the best MAR10 day with @thedragonfeeney hanging out at the #NintendoSwitchSuite 😃

[FeFF @ByteOrderMarc]

@InsiderPhD IPTV of course

[FeFF @ByteOrderMarc]

@TheActualPluto Best of luck wherever life takes you.

[FeFF @ByteOrderMarc]

Love Picross, hate yourself?

Sounds like you would enjoy Picross randomizer!

302 puzzles. Infinite seeds.

https://t.co/NgDGWYQn9n

[FeFF @ByteOrderMarc]

@evankinney What!?? So sorry to hear that! That's beyond messed up.

[FeFF @ByteOrderMarc]

@nmatt0 Great vid! I've been exploring the pairing/handshake on the VM350 model. Looking forward to seeing the rest of your research.

[FeFF @ByteOrderMarc]

@SladeStream Wishing you and your family all the best!

[FeFF @ByteOrderMarc]

Reduce, Reuse, Recycle

#meshtastic

[FeFF @ByteOrderMarc]

@DanG88_ GG!

[FeFF @ByteOrderMarc]

@Burr_TV happy birthday! Feen and I had Burgers Priest today -- just wasn't the same without you! Hope you have a great day!

[FeFF @ByteOrderMarc]

@Burr_TV

[FeFF @ByteOrderMarc]

@UnusualCrab happy birthday!! 🥳🥳🎈🎈🎈🥳🥳🎈🎈 U

[FeFF @ByteOrderMarc]

@LogHurrr Funny how that happens!

[FeFF @ByteOrderMarc]

@qufbee @travisgoodspeed There are some really good scans of the ROM chips that can be processed with maskromtool. I've been saving it until I finish with the external ROM. Didn't want to work ahead of myself. Might be getting to that point.

[FeFF @ByteOrderMarc]

#Casio Project Update!

In my last project post, I had just finished v1 of my ROM reader and successfully dumped the the IR 7000 firmware. I've made a bit of progress since then. 👀

The first version had a few pinout issues, so I redesigned it to be JEDEC pin compatible. 🧵

[FeFF @ByteOrderMarc]

@qufbee @travisgoodspeed Oh cool! The organizer has a service mode that lets me dump the contents of RAM via data port. I haven't found the instructions for writing to RAM yet, all the juicy instructions seem to live on the internal ROM. I'll check this out tonight and see what I can do with it.

[FeFF @ByteOrderMarc]

@qufbee @travisgoodspeed 89 is used to jump to internal ROM in the same fashion

[FeFF @ByteOrderMarc]

@qufbee @travisgoodspeed Thanks! There are a lot of similarities with the 8x, Ax, and 9x instructions listed on that page (jumps/calls/returns) also some good info on the registers.

[FeFF @ByteOrderMarc]

@qufbee @travisgoodspeed Dumping the CPU ROM would be interesting. By analysing code from a few different models I can see how they patch internal ROM calls from the external ROM and change functionality. One model can print to a label maker by dumping the LCD RAM across the data port.

[FeFF @ByteOrderMarc]

@SupremeNSH Happy birthday! 🎈🎉🎉

[FeFF @ByteOrderMarc]

@Suneikuuu Happy birthday!!

[FeFF @ByteOrderMarc]

@Kronicsauce Happy birthday! 🎉