Yes, for the assembler one must insert the unconditional branches across the 1K boundary. For microC, I believe the compiler will only insert such branches at function boundaries. So, if you are forcing all of your functions to be inlined, main() may become larger than 1K instructions. I have had this problem before and the simple fix is to not inline one or more routines to allow the compiler to place them in a different segment from the "scope" of main(). erik -----Original Message----- From: ixp1200-bounces@lists.cs.princeton.edu [mailto:ixp1200-bounces@lists.cs.princeton.edu] On Behalf Of Elsenbeck, Jim Sent: Monday, March 15, 2004 8:34 AM To: 'IXP1200 Developer's List' Subject: RE: [ixp1200] 1K or 2K instruction cache? If you have the version of 1200 that contains 2k of instruction memory you can have upto 2k of instructions. But the instructions are stored in two separate 1k areas and you need to branch between the two areas. -----Original Message----- From: Tim Stevens [mailto:tim.stevens@intec.ugent.be] Sent: Monday, March 15, 2004 11:28 AM To: ixp1200@lists.cs.princeton.edu Subject: [ixp1200] 1K or 2K instruction cache? Hi all, We use a RadiSys ENP-2505 board and encounter a problem concerning the microengine instruction cache size. Each time we compile the code, the compiler complains that it doesn't fit into the instruction memory (total size between 1K and 2K instructions), while our RadiSys documentation states that we have a 2K instruction cache... Does this mean that we have to set a specific compiler flag, or is one instruction larger than one unit in the instruction cache (meaning that a 2K cache can only hold about 1K instructions)? Any help would be appreciated. Kind regards, Tim _______________________________________________ ixp1200 mailing list ixp1200@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/ixp1200 - - - - - - - Appended by Scientific-Atlanta, Inc. - - - - - - - This e-mail and any attachments may contain information which is confidential, proprietary, privileged or otherwise protected by law. The information is solely intended for the named addressee (or a person responsible for delivering it to the addressee). If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate this message or any part of it. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete it from your computer. _______________________________________________ ixp1200 mailing list ixp1200@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/ixp1200