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Title	MD11 Rev 15   1_Sept_83   Copyright 1983 Morrow Designs Inc.
;Subttl -Global System Equates (Rev_15 1_Sept_83)
;------------------------------------------------
;
;	Copyright 1983
;	Morrow Designs, Inc.
;	San Leandro, Ca.
;
;
;		This module is included in all of the MD11 source files. It
;	contains all of the definitions which a) need to be globally accessed,
;	(e.g. the ASCII character equates) and/or b) definitions which need to
;	be globally managed (e.g. address definitions).
;		Address definitions deserve further comment. ALL address usage
;	is declared in this module. This is done to make memory management
;	easier. It is NOT done to facilitate the sharing of data between
;	modules. This practice should be avoided within this piece of software.
;		Parameters are passed by using the General Operations Data
;	Area. Provisions have been made in the cbios to overlay the user
;	application interface portion of the general operations data area.
;		
; Index of Definition Module
;---------------------------
;
;	Identification Information
;
;	I/O Registers - Serial Ports
;	I/O Registers - Counter Timer Chip
;	I/O Registers - Disk Read
;	I/O Registers - Disk Write
;	ASCII character equates
;
;	Disk Operation Error Codes
;	Module Starting Addresses
;	General Address Definitions
;	Disk Module Address Definitions
;	Test Module Address Definitons
;
;	General Operations Data Area Definitions
;	offsets within the Applications Interface Area
;	MTAB Table Format (there must be 1 MTAB for each logical drive)
;	page	64
;
; Identification Information (1_Sept_83)
;---------------------------------------
;
RomRev	equ	40h	;Rom Revision Number
Clevel	equ	 0	;Compatibility Level


; I/O Registers - Serial Ports
;-----------------------------
;
s1data	equ	60h		;serial port 1 data (dart1 = console port)
s1stat	equ	61h		;serial port 1 status

s2data	equ	62h		;serial port 2 data (dart2 = printer port)
s2stat	equ	63h		;serial port 2 status

s3data  equ     70h		;serial port 3 data (sio)
s3stat  equ     71h		;serial port 3 status (sio)


; I/O Registers - Counter Timer Chip
;-----------------------------------
;	1) The labels baud0, baud1 and baud2 correspond to the schematic labels
;	   for the signals carrying the baud rate clocks to the dart/sio. baud0
;	   is the clock for serial port 1.
;
baudset	equ	53h		;ctc channel select/mode port
baud0	equ	52h		;baud rate control for serial port 1 (consol)
baud1	equ	51h		;baud rate control for serial port 2
baud2	equ	50h		;baud rate control for serial port 3


; I/O Registers - Disk Read
;--------------------------
;
cstat	equ	0C1h		;Centronics status port
$DIAGM	equ	00001000b	;	Select diagnostics mode
				;
$MTR	equ	00000010b	;	Motor on (drive active)
$CNTRDY	equ	00000001b	;	Centronics Ready line

clrint	equ	0C2h		;Clear interrupts


; I/O Registers - Disk Write
;---------------------------
;
bnkstb	equ	41h		;Bank Strobe
$CNTIRQ	equ	10000000b	;	Centronics interrupt enable
$XFER	equ	01000000b	;	Inter-bank transfer (1=true)
$MTRON	equ	00100000b	;	Motor On
$AUTOE	equ	00010000b	;	Hard Disk Read/Write
$CNTSTB	equ	00001000b	;	Printer Strobe
$CNTRST	equ	00000100b	;	Printer Restore
$BANK2	equ	00000010b	;	Select Bank 2 (1=true)
$_RMENB	equ	00000001b	;	Enable Rom (0=true)

cdata	equ	42h		;Centronics data port
;	page


; ASCII character equates
;------------------------
;
cr	equ	0Dh		;carriage return
lf	equ	0Ah		;line feed
bell	equ	07h		;bell
asc0	equ	'0'		;ascii 0
asca	equ	'A'		;ascii A
asci	equ	'I'		;ascii I
ascr	equ	'R'		;ascii R


; Bios Level Disk Operation Error Codes (31_Oct_83)
;--------------------------------------------------
;	1) This is a table of the error codes that are passed to the bios.
;
ERwp	equ	1	;Write Protected
ERsk	equ	2	;Seek Error
ERcrc	equ	3	;CRC Error
ERnr	equ	4	;Not Ready
ERef	equ	5	;Equipment Failure
ERnf	equ	6	;Not Found
ERmf	equ	7	;Media Failure
ERuk	equ	8	;Unknown Error Code


; Module Starting Addresses
;--------------------------
;
o_main	equ	0		;Main line (hd*main.mac)
o_io	equ	220h		;Rom Level I/O (hd*io.mac)
o_bios	equ	380h		;Rom Level Bios Support (hd*bios.mac)
o_disk	equ	600h		;Disk Drivers (hd*disk.mac)
o_test	equ	1900h		;Test and Diagnostics (hd*test.mac)
o_hirm	equ	1E00h		;Code for hard disk drivers (hd*hirm.mac)


; General Address Definitions
;----------------------------
;
rom	equ	0		;Start of the ROM
memtop	equ	0FFFFh		;Top of Ram
tstbuf	equ	memtop - 20	;start of the test module's variable area
CSboot	equ	0FE00h		;Cold Start Boot loader execution location
combuf	equ	0FE00h		;Start of the Common Buffer for disk operations
ramdat	equ	0FC00h		;Start of the default IX, IY and MTABs
stack	equ	0FC00h		;Stack

dskbuf	equ	2800h		;Start of the Disk Buffer
prebuf	equ	dskbuf - 20h	;Main Entry Point to the read/write routines
postbuf	equ	dskbuf + 400h	;End of the disk buffer
genbuf	equ	dskbuf + 440h	;Start of the Scratch buffer
fmtbuf	equ	dskbuf + 480h	;Start of the Format Buffer
	page


; Disk Module Address Definitions
;--------------------------------
;
	;Pre-Buffer Definitions
hdID1	equ	prebuf+2	;Hard Disk ID 1 (Sector Header Sync and ID)
hngloc	equ	prebuf+3	;Location of the PCHL (hang location)
header	equ	prebuf+4	;Header Image address
hdID2	equ	prebuf+0Ch	;Hard Disk ID 2 (Data Header Sync and ID)
hdID3	equ	prebuf+1Eh	;Hard Disk ID 3 (Data Header Sync and ID)

	;General Buffer Definitions
cpydrv	equ	genbuf		;Copy of Drive Strobe Register (drvstb)
cpymod	equ	genbuf+1	;Copy of Mode Register (mode)
revs	equ	genbuf+2	;Number of revolutions before index error
error	equ	genbuf+3	;Temp Error register for floppy disk operations
fmoton	equ	genbuf+4	;Floppy Motor On Flag
rtycnt	equ	genbuf+5	;Current Retry count
blocks	equ	genbuf+6	;Number 32 byte blocks for current sector size
filchr	equ	genbuf+7	;Fill byte (4E or FF)
crnsec	equ	genbuf+8	;Current sector count
cyltbl	equ	genbuf+9	;Current Cylinder Table

	;Format Buffer Definitions
gaptbl	equ	fmtbuf		;Define the start of the format table
gap1	equ	fmtbuf		;Post index gap
gap3	equ	fmtbuf+1	;Inter-Sector gap
gap5	equ	fmtbuf+2	;Pre-ID-Index mark gap
HDstbl	equ	fmtbuf+3	;Hard Disk Sector Skew Table
FDstbl	equ	fmtbuf+12	;Floppy Disk Sector Skew Table

	;Disk Interrupt Vector Locations
IRQbase	equ memtop and 0FF00h	;Page address of interrupt vector table
FDIvct	equ IRQbase or 0F0h	;Floppy Disk Index Vector
FDMvct	equ IRQbase or 0F2h	;Floppy Disk Match Vector
HDIvct	equ IRQbase or 0F4h	;Hard Disk Index Vector
HDMvct	equ IRQbase or 0F6h	;Hard Disk Match Vector


; Test Module Address Definitons
;-------------------------------
;
port	equ	tstbuf		;port to test stored here by diagnose
bgnchar	equ	tstbuf + 1	;starting character for barber-pole test
mempass	equ	tstbuf		;number of memory passes
errors	equ	tstbuf + 1	;number of memory errors made
;	page

; offsets within the General Operations Data Area
;------------------------------------------------

sekdsk	equ	0	;BDOS disk number
sektrk	equ	1	;BDOS track number
			;
seksec	equ	3	;BDOS sector number
			;
sekhst	equ	5	;Sector number on the disk
			;
unacnt	equ	7	;unallocated rec count
unadsk	equ	8	;unallocated disk
unatrk	equ	9	;unallocated track
			;
unasec	equ	11	;unallocated sector
			;
unamax	equ	13	;sectors per allocation block
sectrk	equ	14	;Logical Sectors per track
			;
physpt	equ	16	;Physical Sectors per track
wrtype	equ	17	;write type
 wrall	equ	0	;	write allocatted
 wrdir	equ	1	;	write directroy
 wrual	equ	2	;	write unallocatted
cflag	equ	18	;flag: Bit
			;	0 - 3 Not Used
@hwsync	equ	4	;	4 Hardware handshake
@cenlst	equ	5	;	5 List device is Centronics
@imsact	equ	6	;	6 In memory submit flag (1=sub active)
@imswet	equ	7	;	7 IMS buffer full (1=buffer has chars)
dflag	equ	19	;flag: Bit
 hstacô	equ	0	;	0 hosô activå flaç (1=sector in buffer)
 hstwrô	equ	1	;	1 hosô writteî flaç (1=buffer writteî)
 rsflag	equ	2	;	2 read sector flag (1=need a read)
 readop	equ	3	;	3 read operation flag (1=read 0=write)
			;	4 - 7 Not Used
trseã	equ	20	;offset to logicaì sectoò withiî physicaì sectoò
vmsgp	equ	21	;pointer to virt drive mesg.
			;
vdrvp	equ	23	;pointer to virt drive in mesg.
			;
cdsk    equ	25	;current drive
vdsk	equ	26	;current virtual drive
dmaadr	equ	27	;BDOS dma address
			;
cnout	equ	29	;pointer to current console output routine
			;
cnin	equ	31	;pointer to current console input routine
			;
cnsts	equ	33	;Pointer to the current console input status routine
			;
cpybnk	equ	35	;Copy of the Current value of the bnkstb (port 41h)

GOleng	equ	36	;Define the length of the general operations area
AIoff	equ	36	;Define offset from start of IY to start of AI
;	page

; offsets within the Application Interface Area
;----------------------------------------------

hstdsk	equ  0 + AIoff	;host disk (forms pointer to MTAB)
hsttrk	equ  1 + AIoff	;host track
			;
hstsec	equ  3 + AIoff	;host sector (physical sector)
			;
seccnt	equ  5 + AIoff	;sector count is number of sectors to transfer
retry	equ  6 + AIoff	;retry count = retries for read/write operations
hstbuf	equ  7 + AIoff	;pointer to disk data buffer
			;
erflag	equ  9 + AIoff	;error flag
opflag	equ 10 + AIoff	;options flag
 @serd	equ	 7	;	7 Suppress Error Display
 @serur	equ	 6	;	6 Suppress User response to errors
 @nover	equ	 5	;	5 Supress Verification of track on seek
 @recal	equ	 4	;	4 Recalibrate the drive
 @wrhst	equ	 3	;	3 Host Write Operations Flag
phytrk	equ 11 + AIoff	;Physical Track
			;
physec	equ 13 + AIoff	;Physical Sector
phyhd	equ 14 + AIoff	;Physical Head
phydrv	equ 15 + AIoff	;Physical Drive address
ioadd	equ 16 + AIoff	;execution address of disk i/o (rdio/wrio/fmtio)
			;(high byte of execution address)

AIleng	equ 18		;Define the length of the Application Interface
MToff	equ 18 + AIoff	;Define offset from start of IY to start of MTAB
;	page

; MTAB Table Format (there must be 1 MTAB for each logical drive)
;----------------------------------------------------------------
;
	;Static Drive Parameters
dskdef0	equ	0		;Flag Register (Active=True=Asserting=1)
@VD	equ		7	;	Virtual Drive (1)
@FRGN	equ		6	;	Foreign Drive (1)
@SECZRO	equ		5	;	Sector numbers start at zero (1)
@DBLMED	equ		2	;	Double(1)/Single Sided Media
$HDMSK	equ	00011100b	;	Head Mask
				;
				;
$PHYADR	equ	00000011b	;	Physical Drive Mask
@HRDDSK	equ		1	;	Hard Disk Flag

	; Dynamic Drive Parameters
dskdef1	equ	1		;Flag Register (Active=True=Asserting=1)
@DRVCAL	equ		7	;	Drive Calibrated(1)
@DRVRDY	equ		6	;	Drive Has Ready Line(1)
@DRVDEN	equ		5	;	Double(1)/Single Density Media
@DRVSIZ	equ		4	;	Standard_8"(1)/Mini_5.25" Select
				;	Spare
@FSTSEK equ		2	;	Drive has Fast Seek capabilities
$SIZMSK	equ	00000011b	;	Sector Mask
				;		00 -  128 Bytes/sector
				;		01 -  256 Bytes/sector
				;		10 -  512 Bytes/sector
				;		11 - 1024 Bytes/sector

CRNCYL	equ	2		;Current Cylinder (lo)
				;
MAXCYL	equ	4		;Maximum Number of Cylinders (lo)
				;
STPRAT	equ	6		;Step Rate
STPSET	equ	7		;Step Settling Time
STPRCL	equ	8		;Recalibration Step Rate
HLDDLY	equ	9		;Head Load delay time
MOTDLY	equ	10		;Motor On delay time
STRPRE	equ	11		;Starting Track of Write Pre-Compensation (lo)
				;
STRLOC	equ	13		;Starting Track of Lo-Current (lo)
				;
FMTTYP	equ	15		;Format Type

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