TRS-80 Model 1 System Replacement ROMs (8 Systems) - Rev G only

Finding the right system ROMs for your TRS-80 Model 1 can be a challenging and expensive endeavor, especially with the need for specialized ROM programmers. Our TRS-80 Model 1 System ROM Replacement Set offers a convenient and cost-effective solution that preserves the original integrity of your vintage computer while adding modern flexibility.

Key Features:

• Complete Set: This product includes two ROM adapters with a DIP switch for easy system selection. By default, the two ROMs are connected via wires, ensuring that both ROMs always have the same system selected.

• No Soldering Required: Unlike other solutions that require jumper wires or modifications to the main board, this replacement set can be dropped directly into the ROM sockets on the main board (Rev G only!!!), preserving the original state of your TRS-80 Model 1. It’s designed to be installed without any soldering, offering a true plug-and-play experience.

• Compatibility: The system ROMs are compatible only with the TRS-80 Model 1 Rev G board.

• System Selection: The solution offers a total of 8 system configurations to choose from, including Level I, all versions of Level II, and the Diagnostic ROM, all easily selectable via the DIP switches.

Options:

• Fixed ROM: You can also pre-select a specific ROM version through solder jumpers if desired.

• Two DIP Switches: Each ROM has its own DIP switch. You need to make sure that these are the same at all times.

• One DIP Switch: (default) There is a cable connecting both ROMs to share one DIP switch on ROM A. This works well when the ROMs are left in place, but when removed often two switches is less error prone.

Please mention your configuration in the cart. If no option is mentioned, the default configuration will have the single DIP switch on one adapter board for easy installation.

This replacement set is perfect for enthusiasts who want to maintain the authenticity of their TRS-80 Model 1 while gaining access to multiple system configurations without the hassle of finding rare ROMs or using a ROM programmer. The ability to switch between different system ROMs with ease adds convenience and functionality to your classic setup.

Notes: The system must be turned off before changing the DIP switch settings to select a different system ROM, otherwise the system will crash (only!).

Note: Items are assembled on-demand. The expected assembly time is about 1 week.