Originally Posted by Tafoid
I can't explain the basic size differences when compared to other emulators. I used "mess64 sc3000 basic3a" (title from softlist) and was given 26620 bytes free:

[Linked Image from mameload.mameworld.info]

Yes, the available free memory of Sega BASIC Level 3 V1 is different to Sega BASIC Level 2 V1.
515 bytes free memory is a joke to write a BASIC program.

Originally Posted by Tafoid
Like I stated already, referring to the line(s) you are pasting which are longer that others, once CR/ENTER is processed it takes longer than a normal keystroke to process on the emulated computer side and the PASTE UI function doesn't afford the time needed for this processing (i.e is blindly spitting out whatever is in the buffer).

Yes and No.
Check the lines 411 and 420 (screenshot) as example.