For example: http://edid.tv/edid/400, 248x155 is not valid.
See VESA EDID standard Table 3.15 - Standard Timings, the value for the horizontal active pixels field must be at least 1. (1+31)*8 = 256. It is strange that the spec says that unused items should be 0101 since that is an otherwise valid, but unusual, timing.
For example: http://edid.tv/edid/400, 248x155 is not valid. See VESA EDID standard Table 3.15 - Standard Timings, the value for the horizontal active pixels field must be at least 1. (1+31)*8 = 256. It is strange that the spec says that unused items should be
0101since that is an otherwise valid, but unusual, timing.