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Hello. I'm a green hand. I wish to get help from you. Thanks in advance. I used CC 4.10.37. My CMD code is: -c -o sample.out -m sample.map -stack 200 sample.obj meminit.obj -l rts30.lib MEMORY { RAM0 : org = 0x410000, len = 0x400 RAM1 : org = 0x809C00, len = 0x400 } SECTIONS { .text : {} > RAM0 .bss : {} > RAM0 .data : {} > RAM1 .stack: {} > RAM1 } When I load the program,the CC display: Trouble writting target DSP memory Error number -2140 Error address 410000 But when I replace the RAM0 with "org=0x809800",everything is ok. Why? Can CC simulator simulate external memory? Thanks. |
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can CC simulator simulate external memory?
Started by ●June 25, 2002
Reply by ●June 25, 20022002-06-25
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Yes, the simulator can simulate external memory, but have you enabled it
(IE enable memory map)? Something that is often overlooked is that for a memory space to be recognized you must a) define it b) close code composer c) restart code composer. And yes I agree this is a pain. Other things to consider - Which simulator are you using? The last one that was being worked on was for the VC33. This is a valid simulator even if you are simulating a C31 since the VC33 is essentialy a C31, plus the addition of 32K words of on chip SRAM. - Memory mapped register can also cause trouble. Basicaly access to external memory requires the simulation of the bus control register. And being memory mapped, it must be allocated in the simulators memory map. Best regards, Keith Larson ----------------------------------- At 03:40 PM 6/25/02 -0000, you wrote: Hello. I'm a green hand. I wish to get help from you. Thanks in advance. I used CC 4.10.37. My CMD code is: -c -o sample.out -m sample.map -stack 200 sample.obj meminit.obj -l rts30.lib MEMORY { RAM0 : org = 0x410000, len = 0x400 RAM1 : org = 0x809C00, len = 0x400 } SECTIONS { .text : {} > RAM0 .bss : {} > RAM0 .data : {} > RAM1 .stack: {} > RAM1 } When I load the program,the CC display: Trouble writting target DSP memory Error number -2140 Error address 410000 But when I replace the RAM0 with "org=0x809800",everything is ok. Why? Can CC simulator simulate external memory? Thanks. +-----------+ |Keith Larson | |Member Group Technical Staff | |Texas Instruments Incorporated | | | | 281-274-3288 | | | | www.micro.ti.com/~klarson | |-----------+ | TMS320C3x/C4x/VC33 Applications | | | | TMS320VC33 | | The lowest cost and lowest power 500 uw/mflop | | floating point DSP on the planet! | +-----------+ |
