ZX Baremulator
Here my experiences with this excellent piece of software om my Raspberry PI
The ZX Baremulator works with any PI and a USB keyboard. Take care to plug the keyboard in before booting. The Spectrum doesn't know hotplug USB.
Version 3 of the emulator works with the Recreated ZX Spectrum keyboard
Sometimes the keys don't work. Both mode A and B of the keyboard.
When connecting only the Recreated ZX Spectrum keyboard and boot the ZX Baremulator, it gives after booting a massage stating that I need to
"replace the keyboard membr". And no key is working at all.
When this is the case:
Add this to cdmline.txt :
usbpowerdelay=1000
cmdline.txt should be an all one single line using Spaces as separators.. Also cmdline.txt doesn't like empty lines.
Adapting the image on a monitor:
The image format is controlled by PI firmware and the TV set, not by ZXB. You can try to play with parameters on config.txt file.
hdmi_group=1
hdmi_mode=17
Will work, after zooming in a bit.