TITLE	'LARGE DISK FMS'
;
;  Copyright 1984, Charles Marslett, Wordmark Systems
;
;  Permission is granted by the author for any use whatsoever of this
;    code, so long as this notice remains in the source code, and so
;    long as the source to this routine, however modified or unmodified,
;    is made available for a nominal cost.
;
	LIST	C,G,I
;
;  DISK I/O EQUATES
;
DKADDR	=	$31	;SIO ADDRESS OF FIRST DISK DRIVE (D1:)
TODK	=	$80	;STATUS BYTE FOR A DATA TRANSFER TO THE DISK
FROMDK	=	$40	;STATUS BYTE FOR A DATA TRANSFER FROM THE DISK
;
READ	=	'R'	;SIO COMMAND EQUATE FOR READING A DISK
WRITE	=	'P'	;SIO COMMAND EQUATE FOR WRITING A DISK
RDSTAT	=	'S'	;SIO COMMAND EQUATE FOR READING THE DRIVE STATUS
WRITEV	=	'W'	;SIO COMMAND EQUATE FOR WRITING A DISK with VERIFY
FMTCMD	=	'!'	;SIO COMMAND TO FORMAT A DISKETTE
;
LK128	=	125	;LOCATION OF 128 BYTE SECTOR LINK
LK256	=	253	;LOCATION OF 256 BYTE SECTOR LINK
;
WARMST	=	$0008
DOSVEC	=	$000A
DOSINI	=	$000C
;
	ORG	$0020
ICHIDZ	DS	1
ICDNOZ	DS	1
ICCOMZ	DS	1
ICSTAZ	DS	1
ICBALZ	DS	1
ICBAHZ	DS	1
ICPTLZ	DS	2
ICBLLZ	DS	1
ICBLHZ	DS	1
ICAX1Z	DS	1
ICAX2Z	DS	1
	DS	2
CURFCB	DS	1
DATBYT	DS	1
;
	ORG	$0031
CHKSUM	DS	1
BUFR	DS	2
;
	ORG	$0043
FMSZPG	DS	2
DIRDSP	=	FMSZPG
DIRSEC	=	FMSZPG+1
CURFNO	DS	1
FMSBPT	DS	2
TMP1	DS	1
TMP2	DS	1
;
;  DEFINITIONS FOR THE ATARI ROM EXECUTIVE
;
DSKTIM	=	$0246
RUNADR	=	$02E0
INIADR	=	$02E2
MEMTOP	=	$02E7
DVSTAT	=	$02EA
;
;  SIO COMMAND BUFFER DEFINITION
;
	ORG	$0300
DDEVIC	DS	1
DUNIT	DS	1
DCOMND	DS	1
DSTATS	DS	1
DBUFLO	DS	1
DBUFHI	DS	1
DTIMLO	DS	2
DBYTLO	DS	1
DBYTHI	DS	1
DAUX1	DS	1
DAUX2	DS	1
;
;  I/O SYSTEM DEFINITIONS
;
HATABS	=	$031A		;BASE OF THE DYNAMIC HANDLER TABLE
;
;  CIO COMMAND TABLE BASE DEFINITIONS (FOR IOCB $00)
;
	ORG	$0340
ICHID	DS	1
ICDNO	DS	1
ICCOM	DS	1
ICSTA	DS	1
ICBAL	DS	1
ICBAH	DS	1
ICPTL	DS	1
ICPTH	DS	1
ICBLL	DS	1
ICBLH	DS	1
ICAX1	DS	1
ICAX2	DS	1
ICSPR	DS	4
;
;  CARTRIDGE SUBSYSTEM DEFINITIONS
;
CARINIT	=	$BFFE		;LOCATION OF INIT VECTOR
CARTEST	=	$BFFC		;LOCATION OF FLAGS
CARRUN	=	$BFFA		;LOCATION OF RUN VECTOR
;
;  800XL MAP CONTROL
;
MAPREG	=	$D301
;
;  OTHER I/O PORT DEFINITIONS
;
NMIEN	=	$D40E
;
;  ROM VECTORS
;
DSKINV	=	$E453		;SINGLE DENSITY DISK I/O ENTRY POINT
SIOV	=	$E459		;SERIAL I/O O.S. ENTRY POINT
;
	INCLUDE	D:MDOS1.ASM	;DATA AND CODE THAT REMAINS FIXED
;
	INCLUDE	D:MDOS2.ASM	;FILE SYSTEM FUNCTIONS
;
	INCLUDE	D:MDOS3.ASM	;INTERNAL DISK I/O ROUTINES
;
	INCLUDE	D:MDOS4.ASM	;UTILITY SUBROUTINES
;
BOOTND	END			;START DUP HERE!