TIUSB Linker Related Issue

[maheshpeddi]

error e16 segment idata_z

Hi ALL,


Specifications says
“In a TIUSB3410 chip, under normal operation mode the 10K ROM is mapped to (0x8000−0xA7FF) in code space. The internal 16K RAM is mapped to address range (0x0000−0x3FFF) in code space. Buffers, MMR, and I/O are mapped to address range (0xF800−0xFFFF) in data space.”

I am getting the following error while building the TIUSB3410 source code.

Error[e16]: Segment IDATA_Z (size: 0x1d9 align: 0) is too long for segment definition. At least 0x154 more bytes needed. The problem occurred while processing the segment placement command "-Z(IDATA)IDATA_I,IDATA_Z,IDATA_N=08-_IDATA_END", where at the moment of placement the available memory ranges were "IDATA:7b-ff"
Reserved ranges relevant to this placement:
IDATA:8-f VREG
IDATA:10-19 DATA_Z
IDATA:1a-1f IDATA_I
IDATA:21-ff IDATA_I
BIT:0-7 BREG
BIT:90-97 SFR_AN
BIT:b0-b7 SFR_AN

After reading through the TIUSB3410 specifications, I modified the Linker script as follows.

I define the Code, XData, IXData 'START' and 'END' as follow?

CODE -- 0x0000 - 0x3FFF
XDATA -- 0xF800 - 0xFFFF
IXDATA -- 0xF800 - 0xFFFF

I define the PDATA with ??? not sure about this
-D_PDATA_START=0x0000 // First address for PDATA memory
-D_PDATA_END=0x00FF // Last address for PDATA memory

Rest of the file is as follows

// Special SFRs
// ------------
// CODE bank setup
-D_FIRST_BANK_ADDR=0x10000
-D_NR_OF_BANKS=0x10
//
// Register bank setup
//
-D?REGISTER_BANK=0 // Default register bank (0,1,2,3).
-D_REGISTER_BANK_START=0 // Start address for default register bank (00,08,10,18).
//
// PDATA page setup
//
-D?PBANK_NUMBER=0F // high byte of 16-bit address to the PDATA area
-D?PBANK=A0 // Most significant byte in MOVX A,@R0. (0xA0 is sfr P2)
-D?PBANK_EXT=0xEA // Most significant byte in MOVX A,@R0. (0xEA is for Dallas DS80C390)
//
// Virtuel register setup
//
///-D_NR_OF_VIRTUAL_REGISTERS=0x20
-D?VB=20 // Used to refer to BREG as byte.
//
//
////////////////////////////////////////////////////////////////////////////////

// Include the lnk_base command file
// =================================
-f lnk_base.xcl

I am new to 8051 and IAR linked scripts. I read though the 8051 compiler and linker manuals provided by IAR and could correct some part linker parameters as mentioned above. Please let me know if I am doing it right.

Regards,
Mahesh