16 August 2026

Flashing pptest4.bin

From the post on 13 July 2026, I have vibe coded the dumper-flasher and flashed pptest4.bin. I have uploaded the result as a YouTube video.

The New Shield

Vibe coding the arduino sketch and the python application reveals that the shield works correctly! Very excited and proud. During the vibe coding, Claude highlighted the fact that I wired the pins incongruent with the arduino SPI library, so I opted for manual read/write without the library. The consequences of this is:

• The user can match the arduino-chip pin pairs if their shield deviates from mine.
• The read/write is slower than if I used the original library.

Results of the pptest4.bin Flash

The successful run of the cartridge with the modified data show that we can temporally expand the capabilities of the chip to the predicted ~35 min runtime (see time calculation). The next task will be to re-tackle hand-editing of a custom cartridge and flashing that.

Next Steps

1. Locate the custom music file from previous.
2. Insert the music file properly.
3. Recurse Segment 4 pointers in Segment 1
4. Erase Segment 4-7

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