Hi, I'm fairly new to this DSP programming thing. We have an application that will record and store large amounts of data coming in from external memory locations in real time. This data can be processed to some extent by the DSP, but ultimately has to be shifted to the host PC for analysis. So Im thinking something along the lines of - using CCS/XDS510PP in the development of the program, EDMA/RTDX via the (other) parallel port for the host PC interface. Ive avoided HPI as it halts the processor and we'll miss incoming data. To use the Chip Support Library I need to use DSP/BIOS, right? But my program isnt exactly huge and doesnt really warrant using DSP/BIOS ticking over in the background taking up space and time. So can I use DSP/BIOS and the CSL in Code Composer to set up my program/interrupts/EDMA/RTDX and then switch off the DSP/BIOS to just leave my core program running? Thanks for any help Adam (Running latest CCS6000 1.2/JTAG XDS510PP/C6711DSK under Win98)