start91270.asm

scmRTOS is real-time preemptive operating system and supports up to 31 user processes (and one syste

/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
/* ELIGIBILITY FOR ANY PURPOSES.                                             */
/*                 (C) Fujitsu Microelectronics Europe GmbH                  */
;==============================================================================
; 1  Contents
;==============================================================================
; 1       Contents
; 2       Disclaimer
;
; 3       History
;
; 4       Settings
; 4.1     Controller Family
; 4.1.1   Flash wait cycles
; 4.2     Stack Type and Stack Size
; 4.3     Low-Level Library Interface
; 4.4     C++ start-up 
; 4.5     Clock Selection
; 4.5.1   Select clock source  
; 4.5.2   Select PLL ratio  
; 4.5.3   Select CPU and peripheral and external-bus clock divider  
; 4.5.4   Select CAN clock 
; 4.5.5   Select Clock Modulator  
; 4.6     External Bus Interface
; 4.6.1   Select Chip mode
; 4.6.2   Select Chipselect
; 4.6.3   Set memory addressing for Chipselects
; 4.6.4   Configure Chipselect Area
; 4.6.5   Set Wait cycles for Chipselects
; 4.6.6   Select External bus mode (Address lines 23:16)
; 4.6.7   Select External bus mode (Control signals)
;
; 5       Section and Data Declaration
; 5.1     Define Stack Size
; 5.2     Define Sections
;
; 6.      S T A R T 
; 6.1     Clock startup
; 6.1.1   Set PLL Multiplier
; 6.1.2   Start PLLs 
; 6.1.3   Wait for PLL oscillation stabilisation
; 6.1.4   Set Clocks 
; 6.1.4.1 Set CPU and Peripheral and External Bus Clock Divider
; 6.1.4.2 Set External Bus Interface Clock
; 6.1.4.3 Set CAN Clock Prescaler
; 6.1.4.4 Switch Main Clock Mode
; 6.1.4.5 Switch Subclock Mode
; 6.1.4.6 Switch to PLL Mode
; 6.2     Set BusInterface
; 6.2.1   Set CS0 
; 6.2.2   Set CS1 
; 6.2.3   Set CS2  
; 6.2.4   Set CS3
; 6.2.5   set Port Function Register
; 6.2.6   Enable used CS
; 6.2.7   Set Flash wait cycles
; 6.3     Initialise Stack Pointer and Table Base register
; 6.4     Clear data 
; 6.5     Copy Init Section from ROM to RAM
; 6.6     C Library Initialization
; 6.7     Call C++ Constructors
; 6.8     Call Main Routine
; 6.9     Return from Main Function
;==============================================================================
; 2  Disclaimer
;==============================================================================
;                   Fujitsu Microelectronics Europe GmbH                       
;                 http://emea.fujitsu.com/microelectronics 
;                                                            
; The following  software  is for  demonstration  purposes only.  It is not
; fully  tested, nor validated  in order  to fullfill  its task  under  all
; circumstances.  Therefore,  this software or  any part of it must only be
; used in an evaluation laboratory environment.                        
; This software is subject to the rules of our standard DISCLAIMER, that is
; delivered with our  SW-tools on the Fujitsu Microcontrollers CD 
; (V3.4 or higher "\START.HTM") or on our Internet Pages:
; http://www.fme.gsdc.de/gsdc.htm
; http://emea.fujitsu.com/microelectronics 
;
;==============================================================================
; 3  History
;==============================================================================
;
;==============================================================================
;       MB9127x Series C Compiler's 
;
;       Startup file for memory and basic controller initialisation
;==============================================================================
;History:
;
; 2005-08-04 V1.0 UMa  Release first version
; 2006-12-07 V1.1 MHe  Add FLASH wait cycles setting
;
;==============================================================================
; 4  Settings
;==============================================================================
;
; CHECK ALL OPTIONS WHETHER THEY FIT TO THE APPLICATION;
;
; Configure this startup file in the "Settings" section. Search for
; comments with leading "; <<<". This points to the items to be set.
;==============================================================================
;
#set    OFF             0
#set    ON              1
#set    LOW_PRIOR       31
;
;==============================================================================
; 4.1  Controller Family
;==============================================================================
#set    MB91V280        0                       ; FR-60Lite, MB91V280 series
#set    MB91F272        1                       ; FR-60Lite, MB91F272 series
;
#set    FAMILY          MB91F272                ; <<< select family

;====================================================================
; 4.1.1  Flash wait cycles
;====================================================================
; With this setting the number of wait cycles for access to FLASH 
; memory is set. 


#set   FLASH_READ_ONLY   ON      ; <<< setting Flash-mode


 
; ON:  For read-only applications 1 wait cycle is set which allows 
;      to read at maximum speed. Up to 33 MHz can be operated. 
       
; OFF: For read-and-write applications 3 wait cycles are set. 
;      Up to 33 MHz can be operated.
      
  
; Note: Please check also the 91265-series HW-manual chapter "Flash memory"

;==============================================================================
; 4.2  Stack Type and Stack Size
;==============================================================================
;
#set    USRSTACK        0                       ; user stack: for main program
#set    SYSSTACK        1                       ; system stack: for main program and interrupts
;
#set    STACKUSE        SYSSTACK                ; <<< set active stack
;
#set    STACK_RESERVE   ON                      ; <<< reserve stack area in this module
#set    STACK_SYS_SIZE  0x400-4                 ; <<< byte size of System stack
#set    STACK_USR_SIZE  2                       ; <<< byte size of User stack 
;
; - If the active stack is set to SYSSTACK, it is used for main program
;   and interrupts. In this case, the user stack could be set to a dummy
;   size.
;   If the active stack is set to user stack, it is used for the main
;   program but the system stack is automatically activated, if an inter-
;   rupt is serviced. Both stack areas must have a reasonable size.
; - If STACK_RESERVE is ON, the sections USTACK and SSTACK are reserved 
;   in this module. Otherwise, they have to be reserved in other modules.
;   If STACK_RESERVE is OFF, the size definitions STACK_SYS_SIZE and 
;   STACK_USR_SIZE have no meaning.
; - Even if they are reserved in other modules, they are still initialised
;   in this start-up file.
;
; - If only system stack is used and SSB is linked to a different bank
;   than USB, make sure that all C-modules (which generate far pointers 
;   to stack data) have "#pragma SSB". Applies only to exclusive confi-
;   gurations.
; - Note, several library functions require quite a big stack (due to 
;   ANSI). Check the stack information files (*.stk) in the LIB\911
;   directory.
;==============================================================================
; 4.3  Low-Level Library Interface
;==============================================================================
#set    CLIBINIT        OFF                     ; <<< select extended library usage

; This option has only to be set, if stream-IO/standard-IO function of
; the C-library have to be used (printf(), fopen()...). This also 
; requires low-level functions to be defined by the application 
; software.
; For other library functions (like e.g. sprintf()) all this is not
; necessary. However, several functions consume a large amount of stack.
;==============================================================================
; 4.4  C++ start-up 
;==============================================================================
#set    CPLUSPLUS       ON                     ; <<< activate if c++ files are used
;
; In the C++ specifications, when external or static objects are used, 
; a constructor must be called followed by the main function.  
; Because four-byte pointers to the main function are stored in the 
; EXT_CTOR_DTOR section, call a constructor sequentially from the 
; lower address of the four addresses in that section.
;
; If using C++ sources, activate this function to create the section
; EXT_CTOR_DTOR. 
;==============================================================================
; 4.5  Clock Selection
;==============================================================================
; There exist 3 internal clock trees.
; CPU clock, peripheral clock and external bus clock
; There is also the possibility to select a specific clock for the CAN Controller
; As first step the internal frequency (PLL, use or not) must be selected.
; Afterwards the 3 clock trees and the CAN Controller must be set-up.
; There is also a clock modulator, intended to minimize the electromagnetic 
; interference - EMI.
;==============================================================================
; 4.5.1 Select clock source  
;==============================================================================
#set    NOCLOCK         0                       ; do not touch CKSCR register
#set    MAINCLOCK       1                       ; select main clock 
                                                ; (1/2 external)
#set    MAINPLLCLOCK    2                       ; select main clock with PLL
#set    SUBCLOCK        3                       ; select subclock
;
#set    CLOCKSOURCE     MAINPLLCLOCK            ; <<< set clock source
;
#set    ENABLE_SUBCLOCK OFF                     ; <<< set if Subclock exists 
;                                               ;     and should be enabled
;==============================================================================
; 4.5.2 Select PLL ratio  
;==============================================================================
; Select the PLL multiplier. 
; For the maximum permitted frequency, please refer to the hardware manual.
; The frequency in brackets is the resulting frequency for a source oszillation 
; of 4 MHz.
;
#set    PLLx1           0x00                     ; ext. clock/quartz x1 (4 MHz) 
#set    PLLx2           0x01                     ; ext. clock/quartz x2 (8 MHz)
#set    PLLx3           0x02                     ; ext. clock/quartz x3 (12 MHz)
#set    PLLx4           0x03                     ; ext. clock/quartz x4 (16 MHz) 
#set    PLLx5           0x04                     ; ext. clock/quartz x5 (20 MHz) 
#set    PLLx6           0x05                     ; ext. clock/quartz x6 (24 MHz) 
#set    PLLx7           0x06                     ; ext. clock/quartz x7 (28 MHz) 
#set    PLLx8           0x07                     ; ext. clock/quartz x8 (32 MHz) 
;
#set    PLLSPEED        PLLx8                    ; <<< set PLL ratio (base clock)
;
;==============================================================================
; 4.5.3 Select CPU and peripheral and External-bus clock  
;==============================================================================
; Select the divide ratio for the clocks used for internal device operation.