The ROAM Dev Cartridge for the Commander X16 provides developers and enthusiasts with the ability to experiment with bootable ROM applications, extra RAM, and non-volatile memory storage. The cartridge contains footprints for 32-pin NOR Flash ROMs up to 4Mbits (e.g. SST39SF040), 32-pin SRAMs up to 4Mbits (e.g. AS6C4008), and 5V I2C FRAM components in an SOIC-8 package (e.g. FM24C64B). The ROM footprint is large enough to accommodate a 32-pin ZIF socket.

The onboard ROM is mapped to ROM banks 32-63 and the SRAM is mapped to ROM banks 64-95. Solder jumpers on the back of the cartridge allow for swapping these enabling ROM images to be uploaded to the SRAM which can then be booted as a cartridge.

Requires soldering one SMT component. All other components are through-hole. Pads finished using RoHS-compliant ENIG for superior connection quality and ease of soldering.

Notes:

1. Cartridge contains cutouts to fit a Famicom cartridge shell, however the PCB is 1.6mm thick and may not fit a cartridge shell designed for a 1.2mm PCB.

2. There is an error on the silkscreen for these related to the F-RAM I2C address: The silkscreen reads "NVRAM Addr 0x14 +" and should read "NVRAM Addr 0x50 +"