Simply put, if you want to run a 84+ program, get yourself a 84+, or use an emulator on your computer: TilEm-NG is usually considered one of the most accurate ones
The monochrome 84+ and the color 84+CE are very different platforms: different processor, different memory layout, etc. Assembly programs and FlashApps written for one of these platforms will simply not work for the other platform. Nobody wrote a monochrome 84+ emulator for the 83PCE / 84+CE(-T). It's not that nobody knows how to emulate a 84+, but the thing is, making an emulator is a lot of work, and making it work on such a relatively underpowered platform as the 84+CE is even more work. The 84+CE is not much more powerful than the 84+.