Having built the board and successfully run the first communication tests, you are ready to start programming the 537 core system. In doing so, some rather special points should be observed which are discussed in this article. What’s more, we show you how the board may be used in practice by adding extensions and components.MODES OF THE 537 ‘LITE’ COMPUTERThe fact that it can be used in three different modes adds considerably to the power and versatility of the the 537 Lite board. The modes are Stand Alone, Program Download and Run. Table 1 shows how to set jumpers and switches to select between these modes.Stand Alone mode is typically used for the final application of the board, when a program has been fully tested and is known to work error-free in the target system. After a reset, the user program is immediately executed from EPROM.