Subversion Repositories s6soc

////////////////////////////////////////////////////////////////////////////////

//

// Filename:    zipsys.h

//

// Project:     CMod S6 System on a Chip, ZipCPU demonstration project

//

// Purpose:     Defines particular definitions specific to the ZipCPU. 

//              Originally designed to be specific to the ZipSystem, this has

//      been adjusted to just the CPU, since the CMod S6 doesn't have the full

//      ZipSystem implemented.

//

// Creator:     Dan Gisselquist, Ph.D.

//              Gisselquist Technology, LLC

//

////////////////////////////////////////////////////////////////////////////////

//

// Copyright (C) 2015-2016, Gisselquist Technology, LLC

//

// This program is free software (firmware): you can redistribute it and/or

// modify it under the terms of  the GNU General Public License as published

// by the Free Software Foundation, either version 3 of the License, or (at

// your option) any later version.

//

// This program is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with this program.  (It's in the $(ROOT)/doc directory, run make with no

// target there if the PDF file isn't present.)  If not, see

// <http://www.gnu.org/licenses/> for a copy.

//

// License:     GPL, v3, as defined and found on www.gnu.org,

//              http://www.gnu.org/licenses/gpl.html

//

//

////////////////////////////////////////////////////////////////////////////////

//

//

#ifndef ZIPSYS_H

#define ZIPSYS_H

#include "board.h"

#define CC_Z            0x0001

#define CC_C            0x0002

#define CC_N            0x0004

#define CC_V            0x0008

#define CC_SLEEP        0x0010

#define CC_GIE          0x0020

#define CC_STEP         0x0040

#define CC_BREAK        0x0080

#define CC_ILL          0x0100

#define CC_TRAPBIT      0x0200

#define CC_BUSERR       0x0400

#define CC_DIVERR       0x0800

#define CC_FPUERR       0x1000

#define CC_IPHASE       0x2000

extern void     zip_rtu(void);

extern void     zip_halt(void);

extern void     zip_idle(void);

extern void     zip_syscall(void);

extern void     zip_restore_context(int *);

extern void     zip_save_context(int *);

extern int      zip_bitrev(int v);

extern unsigned zip_cc(void);

extern unsigned zip_ucc(void);

extern  int     _top_of_heap[1];

extern  void    save_context(int *);

extern  void    restore_context(int *);

extern  int     syscall(const int,int,int,int);

#ifndef NULL

#define NULL    ((void *)0)

#endif

static inline void      DISABLE_INTS(void) {

        IOSPACE *sys = (IOSPACE *)IOADDR;

        sys->io_pic = 0;

}

static inline void      ENABLE_INTS(void) {

        IOSPACE *sys = (IOSPACE *)IOADDR;

        sys->io_pic = INT_ENABLE;

}

#endif