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i am running my .out file by keeping some part of it in external memory SRAM.If I keep it in the FLASH will it be faster in comparision to SRAM access? (I am suspicious due to increase in wait states inserted).If I want to keep the part in FLASH how shall I do it?the help file says I should set 'flashnb' bit?where in CNTL1? how to access CNTL1 and set the FLASHNB bit? thanks and regards. |
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Running programme from Flash memory
Started by ●May 20, 2002
Reply by ●May 22, 20022002-05-22
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Subject: Re: Running programme from Flash memory ** Proprietary ** Message: 1 Date: Mon, 20 May 2002 05:35:38 +0100 (BST) From: manoj upadhye <> Subject: Running programme from Flash memory i am running my .out file by keeping some part of it in external memory SRAM.If I keep it in the FLASH will it be faster in comparision to SRAM access? (I am suspicious due to increase in wait states inserted).If I want to keep the part in FLASH how shall I do it?the help file says I should set 'flashnb' bit?where in CNTL1? how to access CNTL1 and set the FLASHNB bit? thanks and regards. HI manjoj yes u are correct when u put some code into flash and try to run then it will be a lot slower because of the acess time.ur DSP runs at 10 ns while flash will be somewhere at 45ns or 90 ns so every time u acess some program memory DSP will run slower because of wait states, but this is not the case with SRAM in DSK which like DSP has a 10ns acess time.U can transfer the full program into FLASH memory using flash programmer and after transfering replace the jumper j2 to connect pin 1 & 2.After that if u are debugging from ccs then goto view memory for 0x0004 of I/O and there change the FLASHENB bit set to 1. u can also acess the CNT1 (0x0004 of I/O) thru c or assembly regards Vinodh Rathna. N.Vinodh Rathna Associate Software Engineer L&T Emsys Mysore phone : 91-821-402561 ext 2716 FAX : (91)-821-403752 |
