31. Integer instructions are executed in three integer execution units ( termed " fixed-point units " by IBM ). 32. It started with an obscure defect in the floating-point unit of Intel Corporation's flagship Pentium microprocessor. 33. If the customer did not buy the floating point unit , then floating point commands were implemented by software simulation. 34. This is in contrast to a floating-point unit ( FPU ), which operates on floating point numbers. 35. It was soon upgraded to a 32K word memory and a floating point unit to allow for some scientific work. 36. POWER6 also introduced the decimal floating point unit to the Power ISA, something it shares with z / Architecture. 37. For the Dreamcast, vector floating point unit ( particularly suited to 3d graphics ) were the highlights of this architecture. 38. IBM chose to modify their existing DMA, compression and floating point unit which support a special set of SIMD instructions. 39. The microprocessor was developed by Sun, but the floating-point unit ( FPU ) was licensed from Meiko Scientific. 40. The floating-point unit made heavy use of instruction pipelining and was the first implementation of Tomasulo's algorithm.