On Thu, 10 Jun 2021 16:51:37 -0400 Owen Hilyard <ohilyard at iol.unh.edu> wrote: > Working backward to the define > statement, AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY is defined as > > #define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY (0x1 << 31) Why not (1u << 31)?