* cr1901 I think I am onto something. THis is a disassembly of the \_\_mulsi2 method:

```rust
00004194 <__mulsi2>:
    4194: 02 12         push    r2
    4196: 32 c2         dint
    4198: 03 43         nop
    419a: 82 4c 40 01   mov     r12, &320
    419e: 82 4d 42 01   mov     r13, &322
    41a2: 82 4e 50 01   mov     r14, &336
    41a6: 82 4f 52 01   mov     r15, &338
    41aa: 1c 42 54 01   mov     &340, r12
    41ae: 1d 42 56 01   mov     &342, r13
    41b2: 00 13         reti

```

The base address looks very wrong. on my MSP430FR5994, the 32 bit multiplier is at base address 0x04c0 . At address 0x140, there is the FRAM module. also , it this possibly code for 16 bit mul operations?