; Z80DOS - Z80 Disk Operating System
;
; Version 1.0 - 05 Sept. 87 by Carson Wilson
;

; -------------------------------------------------------------------
;
; Z80DHDR.LIB - Options and Standard Equates
;
; -------------------------------------------------------------------

;
; Specify where in memory your BDOS begins and where your BIOS ends.
; The next two equates must be set for the particular system.
; You can use either kilobyte or page boundaries.
;
; The number for "MSize/MPages" is where your BIOS ENDS in memory.  For
; standard 64k CP/M systems this is 64 kilobytes/256 pages.
;
; The number for "base" is where your CCP BEGINS in memory.  This is
; computed using MSize and a value n which is the size in kilobytes/pages
; of your entire operating system (CCP+BDOS+BIOS).  You should be able
; to get these values from the source code of your BIOS.
;
; 1 page = 256 bytes, so 4 pages = 1 kilobyte.
;

; Specify addresses using kilobyte boundaries:

MSize	equ	64			; Standard 64k system size
base	equ	0e700h		; (MSize-n) where n is size of
					; ..BIOS+DOS+CCP in kilobytes
					; n varies with the length of
					; ..your BIOS.

; Or, specify addresses using page boundaries:

;MPages equ	256			; 256 page system size
;base	equ	(MPages-37)*256 	; (mpages-n) where n is size in
					; ..pages of BIOS+DOS+CCP

; Standard system addresses - don't change the next three equates:

RamLow	equ	0000h			; Start address memory
DOS	equ	base+800h		; Start address DOS
BIOS	equ	DOS+00e00h		; Start address BIOS


; Time - give the offset in bytes of your BIOS time routine from your
;	 BIOS Boot routine.  At least a minimal routine which points
;	 to a 4-byte BIOS time buffer is required for time stamping.
;	 See BIOSTIME.Z8D for an example BIOS implementation.
;	 If you don't have a BIOS time routine, leave the value for
;	 BIOStim set to 6, which calls the Console Status routine.

BIOStim	equ	BIOS+0006		; Offset of BIOS jump to BIOS
					; ..get/set time routine, if
					; ..implemented.

; ResDsk - You can optionally define an alternate disk for disk reset.
;	   This is useful in floppy systems with a virtual drive feature.
;	   By defining a non-virtual drive (drive B in Morrow MD3) as the
;	   reset disk, you avoid having to switch back to disk A every time a
;	   disk reset is performed.  However, this requires that you always
;	   have a diskette in drive B:.
;

ResDsk	equ	0	; CP/M default is disk A for resets
			; ..0=A, 1=B, 2=C, etc.

;
; Options -	Bit 0: public file enable(1)/disable(0)
;		Bit 1: delay 256 characters active(1)/disable(0)
;

Options	equ	00000011B		; Enable public file and delay


; -------------------------------------------------------------
;
; The remaining equates should stay the same for all systems:
;
; -------------------------------------------------------------

false	equ	0
true	equ	not false

; Standard BIOS function offsets:

Boot	equ	BIOS+00000h		; BIOS cold boot
WBoot	equ	BIOS+00003h		; BIOS warm boot
ConSt	equ	BIOS+00006h		; BIOS console status
ConIn	equ	BIOS+00009h		; BIOS console input
ConOut	equ	BIOS+0000ch		; BIOS console output
list	equ	BIOS+0000fh		; BIOS list output
punch	equ	BIOS+00012h		; BIOS punch output
reader	equ	BIOS+00015h		; BIOS reader input
home	equ	BIOS+00018h		; BIOS home disk
SelDsk	equ	BIOS+0001bh		; BIOS select disk
SetTrk	equ	BIOS+0001eh		; BIOS select track
SetSec	equ	BIOS+00021h		; BIOS select sector
SetDMA	equ	BIOS+00024h		; BIOS set DMA address
read	equ	BIOS+00027h		; BIOS read 128 bytes
write	equ	BIOS+0002ah		; BIOS write 128 bytes
ListSt	equ	BIOS+0002dh		; BIOS list status
SecTrn	equ	BIOS+00030h		; BIOS sector translation

; Internal definitions:

ContC	equ	003h			; Key to generate warm boot
ContH	equ	008h			; Backspace
ContS	equ	013h			; Control-S
tab	equ	009h			; Tab
lf	equ	00ah			; Line feed
cr	equ	00dh			; Carriage return
ContP	equ	010h			; Set/reset print flag
ContX	equ	018h			; Delete line (backspaces)
DrvSep	equ	03ah			; Drive seperator (:)
rubout	equ	07fh			; Delete last char
;
MaxCmd	equ	40			; Number of valid DOS commands

; END Z80DHDR.LIB