;**********************************************************************
Title 'Cold Boot Loader Rev_E4 27_Jan_83 Copyright_1983 Morrow Designs'
;**********************************************************************
;
;The following Cold Boot Loader Programs are included in this module
;-------------------------------------------------------------------
;	DJDMA	Disk Jockey DMA controller with 8" Drives
;	DJDMA	Disk Jockey DMA controller with 5 1/4" Drives
;	DJ2DB	Disk Jockey 2D Rev_B (8" floppy) controller
;	HDDMA	Hard Disk DMA controller
;	HDC3	Hard Disk Controller rev_3
;
;Note:
;-----
;	Provisions have been made for a Micronix boot loader for use with
;	the DJDMA Controller. This loader always gets loaded to 0100h.
;
;System Memroy Maps
;==================
;	1) The following table gives a general idea as to where the
;	   various parts of of the operating system are in memory.
;	2) The amount of code and table space that can actually be
;	   loaded from the disk is fixed by the amount of space available
;	   on the system tracks.
;	3) Our most restrictive (smallest) drive is the 5 1/4 inch
;	   'minnie floppy'.  This drive has 20 512 byte sectors for
;	   a total of 10k bytes on the system tracks.  The 8 inch
;	   floppy disk drive is also very close to being filled up.
;	4) Since 512 bytes are reserved for the cold boot loader we
;	   have a total of 9.5k bytes for the operating system.  Out
;	   of this 5.5k bytes  are used by the (CCP + BDOS) leaving
;	   us with a total of 4k bytes of loaded code and data space
;	   to play with.  Right now we are using all of this space
;	   so any major additions will have to result in a little
;	   (lot?) of code shuffeling or in the creation of a Cbios
;	   that simply will not fit on a small disk drive.
;	5) The BIOS can take up as much as 6.4k bytes of space; However,
;	   only 4k bytes are actually on the disk. The remaining space is
;	   used for uninitialized storage.
;
;	sysgen	48k	56k	60k	62k	64k
;	 image	CP/M	CP/M	CP/M	CP/M	CP/M
;
;	 900	~~~~	~~~~	~~~~	~~~~	~~~~	Loader
;	 B00	9100	B100	C100	C900	D100	CCP
;	1300	9900	B900	C900	D100	D900	BDOS
;	2100	A700	C700	D700	EF00	E700	Cbios
;	3100	B700	D700	E700	FF00	F700	Tables (approx.)
;	35FF	BFFF	DFFF	EFFF	F7FF	FFFF	End of Memory
;
;	~~~~	8900	A900	B900	C100	C900	DDT
	page

;*****************************
;Begin User Configuration Area
;*****************************
;
;Define TRUE and FALSE
;---------------------
;
TRUE	equ	1
FALSE	equ	0

;Set the Memory Size
;-------------------
;
msize	equ	48		;Memory size of target CP/M

;Boot Controller Selection
;-------------------------
;	Only one of the following equates should be set to TRUE.  The
;	others sould be set to FALSE.  These equates define the boot loader
;	that is to be used.
;
dmorder	equ	FALSE		;Set to boot a DJDMA controller 8" Drives)
mforder	equ	TRUE		;Set to boot a DJDMA controller (5 1/4" Drives)
fdorder	equ	FALSE		;Set to boot a DJ2D/B controller
mworder	equ	FALSE		;Set to boot a HDDMA controller
hdorder	equ	FALSE		;Set to boot an HDC3 controller

;Misc Equates
;------------
;
micron	equ	FALSE		;Set for Micronix boot loader (only DJDMA)
absasm	equ	false		;set for MAC
retries	equ	10		;Maximum # of disk retries
	page

;*****************************
;Begin Internal System Equates
;*****************************
;
;Sizes
;-----
;
biosln	equ	13h		;BIOS length in pages
ccpln	equ	800h		;Length of the CCP
bdosln	equ	0e00h		;Length of the BDOS
size	equ	(msize*1024)	;Memory size in Kilo-bytes

;Starting addresses
;------------------
;
ccp	equ	size-(biosln*100h+ccpln+bdosln)
bdos	equ	ccp+ccpln
bios	equ	ccp+ccpln+bdosln