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Here an excerpt of an M51 file successfully generated by UV2 version 2.4a. I have "Code Banking" unchecked in the Options..Target tab, "use linker control file" checked in Options...BL51 Misc. The excerpted command at the top of the .M51 file shows my intentions. Why doesn't BL51 put the code where I want it to go? I know that this code won't run as is, but I'm now simply trying to get control over where the code is placed.
BL51 BANKED LINKER/LOCATER V5.11 10/26/2007 16:15:40 PAGE 1 BL51 BANKED LINKER/LOCATER V5.11, INVOKED BY: C:\KEIL\C51\BIN\BL51.EXE System.obj, ACalib.obj, AFocus.obj, BUTTONS.obj, CMD_HL.obj, CMD_HL_DATA.obj, cmd_hlwc.obj, Cmd ... >> GE_ME REGFILE (.\CHANGE_ME.ORC) RAMSIZE (256) DISABLEWARNING (16) BANKAREA (0X8000, 0XFFFF) CODE (0X0C00, ?C_C51STARTUP, ?PR?_SET_ERROR?ERROR, ..._SET_TIME_FLAG?TIME) BANK2 (8000H, ?PR?_ZERO_AXIS?ACALIB, ?CO?ACALIB, ?PR?_SET_FEEDBACK_BY_SPEED?ACALIB, ?PR?_SET_FEE ... BANK3 (8000H, ?PR?_GET_TOKEN_STRUCT?CMD_HL, ?PR?_H_CMD_PROC?CMD_HL, ?PR?DO_AXIS_VAR_OUTPUT?CMD_HL, ?PR?CMD_HL, ... ...PR?_GETKEY?_GETKEY) ... MEMORY MODEL: LARGE WITH FLOATING POINT ARITHMETIC ... INPUT MODULES INCLUDED: System.obj (SYSTEM) ACalib.obj (ACALIB) AFocus.obj (AFOCUS) ... * * * * * * * C O D E M E M O R Y * * * * * * * CODE 0000H 0003H ABSOLUTE CODE 0003H 0003H ABSOLUTE 0006H 0005H *** GAP *** ... CODE 008BH 0003H ABSOLUTE 008EH 0005H *** GAP *** CODE 0093H 0003H ABSOLUTE 0096H 000DH *** GAP *** CODE 00A3H 0003H ABSOLUTE CODE 00A6H 009AH UNIT ?C_C51STARTUP CODE 0140H 0059H UNIT ?PR?_SET_ERROR?ERROR... CODE D488H 0001H UNIT ?PR?SHUTDOWN_TEST?SHUTDOWN ... CODE D489H 0001H UNIT ?PR?TIME_TEST?TIME * * * * * * * C O D E B A N K 2 * * * * * * * 0000H 1475H *** GAP *** BANK2 1475H 0307H UNIT ?PR?_ZERO_AXIS?ACALIB BANK2 177CH 0243H UNIT ?CO?ACALIB BANK2 19BFH 023BH UNIT ?PR?_SET_FEEDBACK_BY_SPEED?ACALIB ... BANK2 2700H 0001H UNIT ?PR?HANDLE_ZERO_HOME_PRESS?BUTTONS BANK2 2701H 000FH UNIT ?PR?_CABS?CABS * * * * * * * C O D E B A N K 3 * * * * * * * 0000H 1475H *** GAP *** BANK3 1475H 03BDH UNIT ?PR?_GET_TOKEN_STRUCT?CMD_HL BANK3 1832H 01CAH UNIT ?PR?_H_CMD_PROC?CMD_HL ... BANK3 949AH 0008H UNIT ?PR?GETCHAR?UNGETCHAR BANK3 94A2H 000AH UNIT ?PR?_GETKEY?_GETKEY ... _STRRCHR . . . . . . . . . . . . . @0xf7f0 _SUPPORTED . . . . . . . . . . . . @0xff83 _WAIT_NS . . . . . . . . . . . . . @0xff8c *** WARNING L19: COMMON CODE SEGMENTS LOCATED TO BANKED AREA Program Size: data=39.6 xdata=5337 code=59067 LINK/LOCATE RUN COMPLETE. 1 WARNING(S), 0 ERROR(S)
Yes, I did turn off the code banking checkbox because when it was on, BL51 puts code in the banks I specified by selecting each file and using the dropdown list in the options dialog. With the box unchecked, it follows the .lin file I created and saved.
The excerpted M51 file I posted shows the BL51 command echoing my input file correctly, but executing it incorrectly. When code banking is checked, the M51 file shows UV2 doing its own thing and not using my .lin file.
Now I need to know if there is a way to make BL51 actually execute my command as written, which it is not doing. It is placing the code according to some scheme other than what's in my .lin file. For example, I want code to start in BANK2 0x8000. It is not doing that.
And you realize that the individual banks somewhere needs to contain common code - code that isn't banked in and out - that may perform the actual banking?
Have you make sure that it isn't this common code that you see, and that the linker isn't really placing the banked code starting at 0x8000?
"The excerpted M51 file I posted shows the BL51 command echoing my input file correctly, but executing it incorrectly."
It doesn't show any COMMON specification, though, does it?
My first concern, reflected in the command "CODE(0x0C00)," is that no code reside in Bank 0 below address 0x0C00. We have a bootloader in that region. We get nowhere until that requirement is fulfilled.
Without any BANKx instructions our linker file, we get that requirement fulfilled. It seems that banking somehow disables the linker from fulfilling this requirement. I have tried using COMMON, and the result also does not meet the requirement.
On Monday I will post another example with the COMMON directive in it.
I used the COMMON command in place of the CODE command, and the result was identical to the example I posted at the start of this thread.
With no references to code banking in the .lin file, BL51 correctly places the start of code at 0x0C00. With code banking, BL51 puts the start of code where it wants to regardless of the command arguments in the .lin file.
Does anyone know how to get around this problem?
http://www.keil.com/forum/
This is it. Here. On the forum. Isn't it? Doesn't your link point to here?
I guess this was the intended link:
http://www.keil.com/support/
"This is it. Here. On the forum. Isn't it?"
No, it is not.
"Doesn't your link point to here?"
No - it points to the 'Overview' or introduction to the forum which, among other things, says,
"Keil support personnel do not monitor this forum and are not guaranteed to reply to your queries."
and,
"If you have legitimate technical support requests, please use the support knowledgebase or the Assistance Request Form available on our support site."
See for yourself: http://www.keil.com/forum/
"I guess this was the intended link"
No, I intended the forum introduction page - which both explains that this forum is not the route to Keil support and provides a link to Keil support...
Thank you. I have contacted support at Keil.