I have a trs-80 model 100. I have all the option rams used. I've seen some quite useful ideas from other collectors on the internet for other TRS-80 model computers of using mouser electronic parts to create peripherals.
So it should be possible to create a custom rom chip that supports 4 MB of ram. Something like Re-mem?
I know that some assembly language is going to have to be put into work and already found an open source assembler from another enthusiast on sourceforge for the model 100.
I found out that its possible to create a custom Linux Kernel for the specific hardware. I can more conveniently use a stripped down Unix clone from sourceforge for the z80 type processors.
A text based bootable Linux custom rom chip is possible. So any ideas to get a custom blank rom chip(with 50 mb for packages) would be useful. If not I'll have to do a long research project.