LOGVECT.C

/*    RESET AND INTERRUPT VECTORS
    Modified-version of COSMIC-France's vector.c

    (c) M. Lutfi Shahab

    First creation : 8-Jan-1995

    Modifications :
        - Bugs found in Whitesmiths's vector.c (vector 9 contains Division
          by Zero).
        - RESET: Whitesmith always defined zk and sk by zero, but in this
          file, user can modified it.
        - exception handler now can only be a near address (appropiate use
          for EVB under MCX16 kernel operation).
 */
#define _WSC_
#include "mcx16.h"

extern SYSTABLE SysTable;
extern @port void  _stext(void);      /* startup routine */
extern @port void SCITrmIsr(void);  /* SCI transmit interrupt handler */
extern @port void SCIRcvIsr(void);  /* SCI receive interrupt handler */
extern @port void _BerrIsr(void);
extern @port void DivZero(void);
extern @port void IllegalOpcode(void);
extern @port void _default(void);
static @port void _dummit(void);


const struct reset {
    @far @port void (*rst)(void);    /* reset + code extension */
    unsigned int isp;         /* initial stack pointer */
    unsigned int dpp;         /* direct page pointer */
    @port void (*vector[58])(void);     /* interrupt vectors */
} _reset = {
/*0000:*/  /*  vector 0: (ixksk) = $0110
                            bank 0, stack at $1xxxx
                            start address :
                            [15:12] = reserved
                            [11:8]  = initial ZK
                            [7:4]   = initial SK
                            [3:0]   = initial PK
                     */
/*0002: */   _stext,     /* vector 1, initial PC  */
/*0004: */   0x002E,     /* vector 2, Stack Pointer, [15:0]  = initial SP */
/*0006:*/    0x0000,     /* vector 3, direct page pointer,
                            initial IZ (Direct Page Pointer) */

           /* BEGIN VECTORS */
/*000A:*/    _dummit,    /* vector 5, Bus Error (BERR) */
/*0008:*/    _dummit,    /* vector 4, Breakpoint (BKPT) */
/*000C:*/    (@port void *)0x02FA,    /* vector 6, Software Interrupt (SWI) to call MCX16 services */
/*000E:*/    _default,    /* vector 7, Illegal Instruction */
/*0010:*/    _default,    /* vector 8, Divide by Zero */
/*0012:*/    _dummit,     /* vector 9, Unassigned, Reserved */
/*0014:*/    _dummit,     /* vector A, Unassigned, Reserved */
/*0016:*/    _dummit,     /* vector B, Unassigned, , Reserved */
/*0018:*/    _dummit,     /* vector C, Unassigned, Reserved */
/*001A:*/    _dummit,     /* vector D, Unassigned, Reserved */
/*001C:*/    _dummit,     /* vector E, Unassigned, Reserved */
/*001E:*/    _dummit,     /* vector F, Uninitialized Interrupt */
/*0020:*/    _dummit,     /* vector 10, Unassigned, Reserved */
/*0022:*/    _dummit,     /* vector 11, Level 1 Interrupt Autovector */
/*0024:*/    _dummit,     /* Vector 12, Level 2 Interrupt Autovector */
/*0026:*/    _dummit,     /* Vector 13, Level 3 Interrupt Autovector */
/*0028:*/    _dummit,     /* Vector 14, Level 4 Interrupt Autovector */
/*002A:*/    _dummit,     /* Vector 15, Level 5 Interrupt Autovector */
/*002C:*/    _dummit,     /* Vector 16, Level 6 Interrupt Autovector */
/*002E:*/    _dummit,     /* Vector 17, Level 7 Interrupt Autovector */
/*0030:*/    _dummit,     /* Vector 18, Spurious Interrupt */
/*0032:*/    _dummit,     /* vector 19 user-defined interrupt */
/*0034:*/    _dummit,     /* vector 1A user-defined interrupt */
/*0036:*/    _dummit,     /* vector 1B user-defined interrupt */
/*0038:*/    _dummit,     /* vector 1C user-defined interrupt */
/*003A:*/    _dummit,     /* vector 1E user-defined interrupt */
/*003C:*/    _dummit,     /* vector 1E user-defined interrupt */
/*003E:*/    _dummit,     /* vector 1F user-defined interrupt */
/*0040:*/    _dummit,     /* vector 20 user-defined interrupt */
/*0042:*/    _dummit,     /* vector 21 user-defined interrupt */
/*0044:*/    _dummit,     /* vector 22 user-defined interrupt */
/*0046:*/    _dummit,     /* vector 23 user-defined interrupt */
/*0048:*/    _dummit,     /* vector 24 user-defined interrupt */
/*004A:*/    _dummit,     /* vector 25 user-defined interrupt */
/*004C:*/    _dummit,     /* vector 26 user-defined interrupt */
/*004E:*/    _dummit,     /* vector 27 user-defined interrupt */
/*0050:*/    _dummit,     /* vector 28 user-defined interrupt */
/*0052:*/    _dummit,     /* vector 29 user-defined interrupt */
/*0054:*/    _dummit,     /* vector 2A user-defined interrupt */
/*0056:*/    _dummit,     /* vector 2B user-defined interrupt */
/*0058:*/    _dummit,     /* vector 2C user-defined interrupt */
/*005A:*/    _dummit,     /* vector 2D user-defined interrupt */
/*005C:*/    _dummit,     /* vector 2E user-defined interrupt */
/*005E:*/    _dummit,     /* vector 2F user-defined interrupt */
/*0060:*/    _dummit,     /* vector 30 user-defined interrupt */
/*0062:*/    _dummit,     /* vector 31 user-defined interrupt */
/*0064:*/    _dummit,     /* vector 32 user-defined interrupt */
/*0066:*/    _dummit,     /* vector 33 user-defined interrupt */
/*0068:*/    _dummit,     /* vector 34 user-defined interrupt */
/*006A:*/    _dummit,     /* vector 35 user-defined interrupt */
/*006C:*/    _dummit,     /* vector 36 user-defined interrupt */
/*006E:*/    _dummit,     /* vector 37 user-defined interrupt */
/*0070:*/    (@port void *)&SysTable,   /* vector 38 points to SysTable address */
/*0072:*/    (@port void *)0x81E,  /* vector 39 as a null task */
/*0074:*/    SCIIsr,      /* Vector 3A, Interrupt Service Routine SCI */
};


/* empty function to receive an undefined interrupt
 */
static @port void _dummit(void) /* just contains rti */
{
    /* enter background debug mode */
    _asm("BGND\n");
    _asm("nop\n");
}