; rtx_mem · ALL MEM is BGF · on RTX heap mind · OS independant
; LINEAR BGS->BGF->SDF · atoms EZZIE PHI THERMO on BGF · free rides · no duo
; load A B C · eax=SDF · r8=free · no fb0 · no fold
        mov     eax, [rdi]
        mov     r8d, eax
        mov     ecx, [rsi]
        xor     r8d, ecx
        mov     r9d, [rdx]
        xor     r8d, r9d
        or      r8d, 1
        sub     eax, ecx
        or      eax, 1
        ret