AR# 6767: 1.5i SP2 Virtex Map - FATAL_ERROR:basnc:basnccomp.c:3319:1.105 - Cannot find other bel for
AR# 6767
1.5i SP2 Virtex Map - FATAL_ERROR:basnc:basnccomp.c:3319:1.105 - Cannot find other bel for
Description
map errors out: FATAL_ERROR:basnc:basnccomp.c:3319:1.105 - Cannot find other bel for unconnected pin on bel BEL_core_i/Rawm_0[1].G:D of comp core_i/Rawm_0[1]. Its current programmed state is : CKINV:1 CYINIT:CIN DXMUX:1 F:#LUT:D=0 G:#LUT:D=A1 REVUSED:0 BYMUX:BY SRMUX:SR FXMUX:FXOR SYNC_ATTR:SYNC SRFFMUX:0 FFX:#FF INITX:LOW Process will terminate. Please call Xilinx support.
The problem in 1_5is2 is an optimization routine that moves a flipflop from G to F location when the input is fed by COUT of another slice. This optimization routine does not clean up the slice content correctly when the flop involved is a FDRS type flop.