A gusty, crossfield wind made life difficult for both teams, but there was little quality throughout a frustrating ninety minutes of cup football.
Royal Wootton Left back Chris Jackson, starting his first game of the season having had to make do with a place on the bench for the opening two league games, had put Bassett ahead after 21 minutes with a powerful effort from outside the area.
However, the Dynamos got back on terms - and ultimately earned a replay - when Keith Murfururirwa lifted he ball over an advancing Declan Lehmann just before the break.
The replay will take place at Haywood Way on Tuesday 13th August with a 7.45pm Kick Off