/****************************************************************************
   
    OS/A65 Version 2.0.0
    Multitasking Operating System for 6502 Computers

    Copyright (C) 1989-1998 Andre Fachat 

    This program is free software; 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 2 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
    MERCHANTABILITY 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; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

****************************************************************************/


/***************************************************************************/
/*			These defines control the ROM build		   */ 
/*									   */ 

#define   ROM
#undef   EMUTEST

/* These are necessary for PET kernel **************************************/

#define   NOMMU   
#define   NOSYSPORT
#undef 	  CLK2MHZ		/* we only have approx. 1 MHz ... */
#undef 	  CMOSCPU		/* ... and no CMOS cpu */
#define	  VIDPAGE 8
#undef	  SHORTLINE		/* prepare for 80 col screen */

#define	  RAMTEST
#define	  RAMSTART 128
#define	  RAMEND $e8
#define	  NOMIRRORMEM

#define   MIN_MEM $e8		/* RAM up to I/O -> 8x96 */

#undef    NMIDEV		/* there is no NMI in the PET machine */
#define   EOK_NOFILL		/* do not fill kernel to end of mem */

#define	  LIB6502_SHAREDZERO	/* lib6502 fork sets FORK_SHARED to 0 */

#define	  OSA_CPU	"6502"
#define   OSA_ARCH	"PET"

/* These are changeable ****************************************************/

#define ROMSTART        $0b03   /* where the ROM starts */

#define	MEMINIVAL	$0	/* Clear memory to 0 on boot */

#define	STACKCOPY		/* if defined, save stack area in memory
				   when context switching, otherwise divide
				   stack area and give each task a part.
				   It's faster without, but allows more
				   tasks with */

#define	NEED_CHECKCHLD		/* this is necessary if using "init" or 
				   lib6502 */
#define	NEED_GETINFO
#define	NEED_SLOCK
#define	NEED_RENICE

#define	BOOTDRV		"c"	/* where are the boot files (IEC device 8) */

#define ROOTPATH        "c:"    /* where lsh chdirs into on boot */


/***************************************************************************
 * 
 * Here comes the ROM content
 */
 
#include  "config.i65"
#include  "kdefs.i65"
#include  "fdefs.i65"
#include  "petdef.i65"

#include  "kernel.i65"

#define SEM_VIAE840_T1  SEM_SERIEC
#undef  SEM_SERIEC
#undef  SEM_PARIEC

          .word *+2		/* load address */
	  jmp RESET
	  ; ROMSTART is here!
.(

/************* ROM entries 				*/

/************* devices	 				*/

#include  "devices/devices.a65"

/************* init process 				*/


#define	INIT_VERBOSE
#define	INIT_RESTART
#define	INIT_MERGE
#define	INIT_LIB6502
/* #define	INIT_USE_STDLIB */
/* #define	INIT_OUTDEV	2*/
#include  "sysapps/init/init.a65"


/************* fsdev - converts devices into files 	*/


#include  "sysapps/fs/fsdev.a65"


/************* fsiec - IEEE488/IEC bus filesystem 	*/

/* both, the parallel and serial iec bus use the same timer */
#define	SEM_CIA2TB	SEM_SERIEC
#undef SEM_PARIEC
#undef SEM_SERIEC

#define	NOLOOP
#define	FSIEC_DEVICE	"devices/piec_pet.a65"
#include  "sysapps/fs/fsiec.a65"
#undef	FSIEC_DEVICE
#print *


/************* mon - OS/A 1 old style monitor/shell	*/

#define	MON_SHEXE $c0		/* ROM executable flag */
#define	MON_MONEXE 0		/* ROM executable flag */
#define	MON_SHDEV 1		/* start on device 0 = video1 */
#define	SHORTMON		/* no assembler/disassembler */
#undef	NOSH
#include  "sysapps/mon/mon.a65"


/************* boot lsh from BOOTDRV			*/

#if 1
	/* add autostart of lib6502 program 'lsh' */

	.(
	.word end_auto
	.byt PK_LIB+PK_AUTOEXEC+PK_RESTART	; is lib6502 program
	.word 0		; P_ADDR ignored
	.byt 16		; P_RAM
	.byt 128	; P_SHARED
	.byt 0		; P_PRIORITY
	.byt 0,0	; P_DEV
	.byt BOOTDRV,":lsh",0,"-d",0,ROOTPATH,0,0
end_auto
	.)

#endif

/************* end of ROM executables			*/

          .word -1

/************* lib6502 code				*/

#include  "lib6502/lib6502.a65"

/************* Kernel					*/

#include  "kernel\kernel.a65"

/************* Constants for lib6502 memory handling	*/

Memstart  =$6800
Memend	  =$ff00
Zerostart =$70

.)