Richardson, Texas-headquartered Convex Computer Corp says it has the first commercially available visual debugger capable of analysing highly optimised code at the source level: the CXdb development tool, the result of 11 years’ research and development, can debug optimised Fortran and C, using a window interface on graphics terminals running CXwindows and ASCII terminals running Maryland Windows, at the system instruction level, with full access to the system state including scalar, vector and communications registers; it’s available this month for UKP3,500.