AVR Version 3.6 of uLisp now includes an AVR assembler which allows you to generate machine-code functions, integrated with Lisp, written in AVR assembler mnemonics. For more information see AVR assembler overview.
All versions of uLisp 3.6 now also automatically turn off echo when pasting a program into the Serial Monitor. This allows you to use uLisp with a minimal Serial buffer, freeing up RAM, without the risk of errors due to buffer overflows.
Download the latest versions of uLisp here: Download uLisp.