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Updated Retron 77 (markdown)

Christian Speckner 2018-07-12 00:32:46 +02:00
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Retron-77.md

@ -87,7 +87,7 @@ Following after the bootloader, the SD card contains a single FAT32 partition. F
## Root file system and system lifecycle
The build setup builds the root filesystem into the kernel as an initramfs. The initramfs is never unmounted and contains the full userland, including all binaries and libraries. The FAT32 partition is mounted under `/mnt`. On boot, a serial terminal is started on ttyS0 and can be accessed via the UART header on the board (see above). On startup, init starts the dumper process which keeps running until the console is switched off. The dumper communicates with the WT51F104S MCU connected to the cartridge port via ttyS2 and executes shell commands. The program flow looks like this:
The build setup packages the root filesystem as an initramfs that is built into the kernel. The initramfs is never unmounted and contains the full userland, including all binaries and libraries. The FAT32 partition is mounted under `/mnt`. On boot, a serial terminal is started on ttyS0 and can be accessed via the UART header on the board (see above). On startup, init starts the dumper process which keeps running until the console is switched off. The dumper communicates with the WT51F104S MCU connected to the cartridge port via ttyS2 and executes shell commands. The program flow looks like this:
1. Check whether a cartridge is inserted or removed
2. If a cartridge is inserted, try to dump the image