.Z80
	TITLE	bios0 (excbios0) jmp table & unchanging rtns


;	*************************************************

;			external version #
;				1.2

$version	equ	1100h	; Must be in hex form
				; v m m m
				; v=version #
				; mmm = mod level
				; (leading zeroes not shown)


;			internal version #
;				date last changed

version	equ	3191h		; MUST be in hex form
				; y d d d
				; y=last digit of year
				; ddd = days since 1 January


;	*************************************************

; 1983-06-23	changed version # etc. for 2nd release




;****************************************
;*					*
;*            EXECUTIVE BIOS 		*
;*	  	    for			*
;*              CP/M 3.XX		*
;*                  by			*
;*					*
;*	     Glenn S. Tenney		*
;*		   and			*
;*	    Roger W. Chapman		*
;*					*
;*         Copyright (c) 1983		*
;*    Osborne Computer Corporation	*
;*					*
;****************************************


;	Table of contents of this module:

;	(1)	the signon message, with copyright
;	(2)	The bios jump table
;	(3)	A few unchanging routines of the bios.

	page

	dseg		; signon message only needed at cboot


signon:		; signon message at cold boot
	db	1ah		; clear screen

	db	'Osborne Executive CP/M Plus BIOS'

	db	' V'		; external version follows

	db	($version/1000h and 0fh)+'0'	; v
	db	'.'				; .
	db	($version/100h and 0fh)+'0' 	; m

	if	($version/10h and 0fh) OR ($VERSION AND 0Fh)
	db	($version/10h and 0fh)+'0'	; m
	endif

	IF	$VERSION AND 0Fh
	db	($version and 0fh)+'0'		; m
	ENDIF

	db	0dh,0ah

;	official copyright warning message

	db	'Copyright ',1bh,'g',13h,1bh,'G '	; "c" within a circle
	dā	'198³ Osbornå Computeņ Corporation',0dh,0ah
	db	0dh,0ah,0ah	; cr lf lf
	db	0	;	ends the msg


;	Note: the very first data in common (cseg) MUST be
;	the jump table.  The above messages are in bank 0
;	(dseg) and therefore can appear first in the source.

	page
.xlist
	include EXCBIOSE.LIB
.list

	public	wboot@		; to reference jmp tbl
	public	signon		; signon message for cboot
	public	vers		; and version number
	public	rvers		; and place to put rom's vers

	EXTRN	CBOOT, WBOOT		;SYSTEM INITIALIZATION
	EXTRN	DEVINI

	EXTRN	CONIST, CONIN, CONOUT		;CHARACTER I/O
	EXTRN	LIST, AUXOUT, AUXIN
	EXTRN	LISTST, CONOST
 	EXTRN	AUXIST, AUXOST

	EXTRN	HOME, SELDSK, SETTRK		;DISK I/O
	EXTRN	SETSEC, SETDMA, SECTRN
	EXTRN	READ, WRITE
	EXTRN	MULTIO, FLUSH

	EXTRN	MOVE, XMOVE, SELMEM, SETBNK	;MEMORY MANAGEMENT

	EXTRN	TIME

	extrn	drvtbl,devtbl		; various tables
	extrn	torom			; to give access to rom


	cseg		;	common memory


	JP	CBOOT
wboot@:	JP	WBOOT
	JP	CONIST
	JP	CONIN
	JP	CONOUT
	JP	LIST
	JP	AUXOUT
	JP	AUXIN
	JP	HOME
	JP	SELDSK
	JP	SETTRK
	JP	SETSEC
	JP	SETDMA
	JP	READ
	JP	WRITE
	JP	LISTST
	JP	SECTRN
	JP	CONOST
	JP	AUXIST
	JP	AUXOST
	JP	ptdev	; DEVTBL
	JP	DEVINI
	JP	ptdrv	; DRVTBL
	JP	MULTIO
	JP	FLUSH
	JP	MOVE
	JP	TIME
	JP	SELMEM
	JP	SETBNK
	JP	XMOVE
	JP	torom	;				USERF
	JP	RESERV1
	JP	RESERV2



	page

;	the following are (or should be) routines that will
;	not change

reserv1:
reserv2:
	ret	;	not currently implemented


	extrn	devtbl,drvtbl	; tables

;	ptdev	point to device table
;		returns address of serial device table

ptdev:	ld	hl,devtbl	; just pt to the table
	ret


;	ptdrv	point to drive table
;		returns address of dph (disk) table

ptdrv:	ld	hl,drvtbl	; just pt to the table
	ret


	page

;	the following represents the special area in page 0
;	of bank 1 (the tpa) that allows programs to reference
;	information about the rom and bios

;	This information is initialized during cboot and then
;	moved to 40h bank 1 during every wboot.

	dseg		; ok to keep it over there


;	(1)	for the bios

vers:	dw	version		; version number of this bios
	db	2		; product code
	db	0		; feature code

;	(2)	same for the rom

rvers:	ds	4		; version, product and feature

	ds	8		; 16 bytes currently available

	END
	


;	(2)	same for the rom

rvers: