410 Appendix A. Application Examples
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Using C51 and LX51 |
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When you are using the extended LX51 linker/locater the program is generated |
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as shown below: |
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LX51 COMMON{P_ROOT.OBJ}, BANK0{P_BANK0.OBJ}, |
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BANK1{P_BANK1.OBJ}, BANK2{P_BANK2.OBJ} |
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BANKAREA(8000H,0FFFFH) |
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OHX51 P_ROOT |
Philips 80C51MX – Assembler Example
The example Philips 80C51MX\ASM shows how to use the new instructions of the Philips 80C51MX architecture in assembly language. Segments with the memory class ECODE are used to show the ECALL and ERET instructions. Segments with HCONST and HDATA are used to show how to access memory in the 16MB address space of this architecture.
The example program is build with the AX51 macro assembler and the LX51 linker/locater as shown below:
AX51 MX_INST.A51 DEBUG MOD_MX51
LX51 MX_INST.OBJ
OHX51 MX_INST
Keil Software — A51/AX51/A251 Macro Assembler and Utilities |
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Philips 80C51MX – C Compiler Example
The example Philips 80C51MX\Banking shows how to create large C programs |
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for the Philips 80C51MX architecture. The program uses the code banking |
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facilities of the LX51 linker/locater to place program code into the code pages |
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0x80:0000 (bank 0) and 0x81:0000 (bank 1). The function of this example is |
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similar to that shown in “BANK_EX1 – Code Banking with C51” on page 404. |
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In addition some variables are declared with the far memory type to show the |
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usage of the HCONST and HDATA memory class. |
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The example program is build with the AX51 macro assembler and the LX51 |
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linker/locater as shown below: |
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CX51 C_ROOT.C DEBUG
CX51 C_BANK0.C DEBUG
CX51 C_BANK1.C DEBUG
AX51 START_MX.A51 MOD_MX51
LX51 COMMON {C_ROOT.OBJ, START_MX.OBJ},
BANK0 {C_BANK0.OBJ}, BANK1 {C_BANK1.OBJ}
CLASSES (HCONST (0x810000 - 0x81FFFF), HDATA (0x010000 - 0x01FFFF))
OHX51 C_ROOT
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Appendix A. Application Examples |
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