Hi, I have a simple application such as a microcontroller having internal ROM, an ext. RAM placed from 0x8000-0xEFFF, and an EPROM placed from 0x0000 - 0x1FFF. The EPROM is purposed to hold only display messages defined in the c code such as char const xdata Message[] ="Hello"; I don't want to have any other code in that EPROM. I want besides the genarated program code to have a separate HEX file for these messages ready for the EPROM. For example in format HEX-80. How am I to configure the settings using uVison? I have read the artıcles and the thread: http://www.keil.com/forum/docs/thread2074.asp Also, all related threads or similar. However, I haven't understood: am I able to use XCONST type constants in an external memory and genarate a HEX file only containing them without having a code Banking? So far some of my setings are as follow: Checked boxes: OPTIONS-Device-Use Extended Linker(LX51) instead of BL51 OPTIONS-Target-Use On Chip ROM(0x0-0xFFFF) OPTIONS-Target-Off-chip Xdata Memory 0x8000 size 0x7000 OPTIONS-C51-Misc Controls: XCROM OPTIONS-LX51 Locate-Use Memory Layout from Target Dialog checked User Classes: XCONST (X:0x0000-X:0x3FFF) Thanks in advance for your concern! BR Oktay
Hi Hans-Bernhard, Thanks for your quick reply and concern! Obviously it is better to have the code Banking rather than having a risky batch process. :) I just could't understand how to have a code Banking and place the constants defined as const xdata in a Bank. I don't want the processor to access to them with MOVC command. I want to have them accessed by MOVX. Also, do I need to include all the required LIB files such as XBANKING etc.? Basicaly, I didn't find a clarifying example on a simple application like this for C51. Could you help/guid me on this? Thanks in advance! Best regards Oktay
"I just could't understand how to have a code Banking and place the constants defined as const xdata in a Bank." 1. As previously mentioned, remove he 'xdata' - just put 'const' 2. Forget about Code banking; that is something completely different, and not relevant here. "do I need to include all the required LIB files such as XBANKING etc.?" No, you don't.