In C, I can do something like this (pardon my rusty x86/intel syntax): int variable = 0xdeadbeef; __asm { ldw eax, $(variable) # load from variabl

In C, I can do something like this (pardon my rusty x86/intel syntax): int variable = 0xdeadbeef; __asm { ldw eax, $(variable) # load from variable int 0x3 # trip interrupt.. maybe read from a IO port or something. stw $(variable), $eax # get result, put into C variable } return variable; This allows me to express certain things to the computer that are outside the range of expressibility of the language model. What I would like to be able to do in Lisp is to execute the semantic equivalent of the above code fragment. I've considered hacking it into SBCL, but I have had higher priorities so far.