I have only three TRDOS rom's with ramdisc support.
1) for Pentagon 1024 (use only 512kB ramdisc)
2) for ZX PROFI 1024 (use full ramdisc size 80+1 tracks)
3) for SPRINTER 2000 (use also full ramdisc size)
On ZX PROFI is possible from memory page 8 import complette TRD file(image), but software using extended memory can rewrite data in ramdisc.
SPRINTER 2000 can connect more ramdisc's to all 4 virtual FDD drives.
Only ramdisc for Pentagon 1024 is limited with 512kB. It's impossible import complette 640kB TRD file/image to ramdisc. First 512kB in memory is always free for possibility load any software for Pentagon 512 ?
Exist any other TRDOS with ramdisc ?
Exist software for load TRD file from HDD to extended memory ?