 Question: All questions are with respect to text "Booting a Tms320C32 target = system in a c environment" - spra067. #1) On page 2, it mentions a file named BOOT.OBJ. Is this file created = by the programmer, or is this a standard program, taken from somewhere? = If so where? #2) Is BOOT.OBJ only used for C programs, or can it be used for programs = written only in assembly? 3) Relating to page 9, if executing from EPROM (in microprocessor mode) = can you use EPROM of 8 bits wide? 4) It states that on reset, the status of the interrupt pins, will = determine where the boot table is. My question is, how do we initially = place the boot table at that memory location? 5) In microcomputer/bootloader mode, can you use like for example, two = 16 bit wide EPROM's (so that EPROM 1 has bits 16 -31, and EPROM 2 has = bits 0 to 15) or should it always be a single 8 bit EPROM.=20 6) Is it by having more that 1 EPROM like in Question 5, this is only = necessary if running in microprocessor mode. 7) Relating to appendix A, pg. 21. If you used 2 EPROM's like question 5, = are you actually booting from 32 bit wide EPROM (like on page 22) or = booting from 16 bit wide EPROM? This is important since the status of = the interrupt pins rely on this. Answer: #1) BOOT.OBJ is contained in the RTS30.lib ,if desired,but not necessary, it can be extracted using mk30 ,see pg. 5-3 of Optimizing c compiler User's Guide. #SPRU034 #2)Yes, is used to initialize the C environment , basically set up the Stack , and copy's C Constants to the Linker specified address. #3) Yes. see page 21 of #SPRA040 Interfacing Memory to the C32 DSP App Rep. #4) that location, if memory will need to be a EPROM, which in this case you'll use HEX30 to create your Files ,which you will burn onto the EPROM's , or might be SRAM , in which case you might have a other CPU copy the bootheader to the location. If your booting from the serial-port ,then the other serial-port device will supply the bootheader. #5) either way , the c32 & Hex30 are very Flexible, however some hex30 formats are limited. #6) NO, actually, you can only run code out 32bit wide memory in either MP/MC #7) Could be either, you must configure the STRB0 control register , see pg. 7-8 of the c32 Addendum #SPRU132 see bits 16-19 physical memory and data type size , if your address this memory with I/O strobe it's not configurable and is always 32 bit access. |