TESTCFG_SYS_GETBUSARCH (60h) - Data Packet Format

On return, filled in as follows: code. Query function 0 (bus architecture).

┌────────────────────────────────────┐
│Field        Length     C Datatype  │
├────────────────────────────────────┤
│bus_arch     DWORD      ULONG       │
└────────────────────────────────────┘