Changelog

Table of contents
  1. Firmware Changelog
    1. Changes
    2. New Features
    3. 2.1.0 (2024-11-21) - Commands release
      1. Changes
      2. New Features
      3. Fixes
    4. 2.0.0 (2024-10-15) - FAT12 and Upload release
  2. SWITCHER.TOS Changelog
    1. 2.1.0 (2024-11-21) - Renaming images release
      1. Changes
      2. New Features
    2. 2.0.0 (2024-10-15) - Upload release
    3. 1.0.4 (2024-06-01) - First production release
  3. Hardware Changelog (ROM Emulator)
    1. Changes
    2. Fixes
    3. 1.1.0 (2024-06-01) - First production batch

Firmware Changelog

### 3.0.0 (2025-06-01) - v3 release This firmware release is the first stable release of the SidecarTridge TOS v3 board. It includes several new features and improvements over the previous versions.

Changes

  • The firmware is now based on the RP2350 microcontroller, which provides more features and better performance.
  • The firmware now supports 512KB ROMs.
  • The upload feature now display the progress in blocks of 64KB, which is more efficient and faster.

New Features

  • The firmware now supports the RP2350 microcontroller, which provides more features and better performance.
  • There is a new red LED indicator that lights up when the board is powered on.
  • There is a new green LED indicator that lights up when the firmware is running.
  • There is a new orange LED indicator that lights up when the internal USB drive is mounted or transferring data.
  • There is a new CONFIG.TXT file that allows the user to configure some advanced firmware options.
  • The parameter READ_BUS_TICKS in the CONFIG.TXT file allows the user to configure the number of ticks to wait for the bus to be ready before reading it. This is useful for some Atari ST motherboards that require more time to read the bus. Each tick is 12.5ns.
  • The parameter USE_OE in the CONFIG.TXT file allows the user to configure if the OE signal is used or not. Not strictly necessary for Atari computers.
  • Support for Commodore Amiga on EmuTOS.

2.1.0 (2024-11-21) - Commands release

This firmware release adds some maintenance commands and modifies the creation of the INFO.TXT file to avoid issues when powering on the device.

Changes

  • When plugged to the USB port in mass storage mode when the user eject the ROMEMUL volume it does not automount again automatically. The user must press RESET button or unplug and plug again the USB connector.

New Features

  • The commands feature of the version 1.x is back. Now, if a user creates a folder or file with the following names, it will trigger an action in the device when ejected:

  • REBOOT: When the volume is ejected, the device will try to mount again the volume again.
  • RESET: When the volume is ejected, the device will enter in BOOTSEL mode. The volume RPI-RP2 will be mounted again and the user can flash a new firmware.

The files or folders will be deleted after the action is triggered.

Fixes

  • The creation of the INFO.TXT file was modified to avoid issues when powering on the device. Now, when powering on the device there is not any write operation in the mass storage device until the user decides to do it. This avoids issues with some users pressing repeatedly the RESET button when powering on the device and not completing the boot process.

2.0.0 (2024-10-15) - FAT12 and Upload release

This firmware release adds support for FAT12 filesystems and the ability to upload images to the Sidecartridge ROM Emulator from the SWITCHER.TOS app.

### 1.0.4 (2024-06-01) - First production release

First production release of the Sidecartridge ROM Emulator.

SWITCHER.TOS Changelog

2.1.0 (2024-11-21) - Renaming images release

This release adds a feature to rename the images. Now the user can rename the images to a custom name and the SWITCHER.TOS will show the custom name in the menu.

Changes

  • To delete a file, the user has to confirm the deletion by accepting with an uppercase Y or rejecting with any other key.

New Features

  • The user can rename the images to a custom Long File Name (LFN) of up to 64 characters.

2.0.0 (2024-10-15) - Upload release

This release adds support for FAT12 filesystems and the ability to upload images to the Sidecartridge ROM Emulator from the SWITCHER.TOS app.

1.0.4 (2024-06-01) - First production release

First production release of the SWITCHER.TOS app.

Hardware Changelog (ROM Emulator)

### 1.1.1 (2024-10-01) - Minor changes

Changes

  • Larger pads for the RESET and BOOTSEL buttons.

Fixes

  • Swap the UART pins to match the Raspberry Pi Pico pinout.

1.1.0 (2024-06-01) - First production batch

First production batch of the Sidecartridge ROM Emulator.

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