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Upgrade Your Apple IIc or IIc Plus to ROM 4X or ROM 5X! **NOW Supporting XDRIVE IIC** Compatible with Apple IIc (ROM Versions 255, 0, or 3) and Apple IIc Plus! Take your Apple IIc or IIc Plus to the next level with a brand-new, never-used ROM chip—manufactured specifically for these upgrades and not salvaged from another machine. Choose the Right ROM for Your Machine: - ROM 4X: Designed for the Apple IIc, delivering new tools and features.
- ROM 5X: Exclusive to the Apple IIc Plus, offering advanced functionality and improvements.
Key Features of ROM 4X (Apple IIc): XDRIVE IIC Supported!! - Automatic RAM Disk Recovery: Detects and reinstates a bootable RAM disk from battery-backed expansion memory (must include a bootable block).
- Built-in Tools Menu: Access various utilities by pressing Ctrl+Closed-Apple+Reset (or holding Closed-Apple when powering up). Options include:
- Entering the Monitor unconditionally.
- Rebooting the machine (initiates the standard boot sequence).
- Zeroing corrupted RAM cards.
- Running machine and RAM card diagnostics.
- Selecting boot sources: SmartPort, internal floppy, or external floppy.
- Enhanced Boot Behavior: If no bootable device is found, the system automatically drops to BASIC (similar to the IIc Plus).
- Customizable Boot Device: Configure the default boot device by saving a file on the RAM disk.
- XModem-CRC Support: Added compatibility for easier file transfers.
Key Features of ROM 5X (Apple IIc Plus): - Expanded SmartPort Features: Better compatibility and support for multiple devices.
- Advanced Boot Configuration: Save custom boot preferences, including RAM disk and SmartPort options.
- Improved Memory Management: Enhanced diagnostics and tools to manage both onboard and expansion memory.
- Built-in Tools Menu: Access utilities for rebooting, diagnostics, and more, with an improved UI for the IIc Plus.
- Faster and More Reliable Disk I/O: Optimized firmware for quicker and more dependable performance.
- Expanded Compatibility: Improved support for modern storage devices and peripherals.
Copyright Notice: Mgcaret and collaborators. Upgrade now to unlock the full potential of your Apple IIc or IIc Plus! Choose ROM 4X or ROM 5X depending on your machine and enjoy a modernized retro computing experience! 
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