X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp-cpm3.git/blobdiff_plain/ea5293bb6ce484bf1ec9ab70befe10c3a36a70c2..afbcea2d821d1166ae347338ae52a64f3ee51e57:/cbios/boot.180

diff --git a/cbios/boot.180 b/cbios/boot.180
index 0e36bcd..566f190 100644
--- a/cbios/boot.180
+++ b/cbios/boot.180
@@ -3,20 +3,32 @@
 
 
 	public	hwinit,?init,?ldccp,?rlccp
+	public	f_cpu
 
-	extrn	?boot,?pmsg,?conin
-	extrn	ioini1l,msginit,mmuinit,intinit
+	extrn	boot,?conin
+	extrn	pr.inln,pr.crlf,pr.dec,pr.decl
+	extrn	ioini1l,msginit,mmuinit,intinit,cpu_frq
+	extrn	prt0ini,gs_rtc
 	extrn	@civec,@covec,@aivec,@aovec,@lovec
-	extrn	@cbnk,?bnksl
+	extrn	@cbnk,?move,?xmove
 
-	include config.inc
-	include	z180reg.inc
+	maclib	z180reg.inc
+	maclib	config.inc
+	maclib	version.inc
 
 
-bdos	equ	5
-
 ccpsize	equ	0c80h
 
+	; CP/M BDOS Function Interfaces
+
+resetdsk	equ	13
+open		equ	15
+read		equ	20
+setdma		equ	26
+setmulti	equ	44
+bdos		equ	5
+
+
 	 if	banked
 tpa$bank equ	1
 	 else
@@ -28,136 +40,107 @@ tpa$bank equ	0
 
 hwinit:
 	ld	a,(INIDONE)
+	and	80h
 	cp	INIDONEVAL
 	jr	z,hwini_skip
 	ld	hl,hwini_tab
 	call	ioini1l
 	ld	a,0c3h
-	ld	hl,?boot
+	ld	hl,boot
 	ld	(0),a
 	ld	(1),hl
 hwini_skip:
-	call	mmuinit		; setup mmu registers
 	call	msginit
+	call	cpu_frq
+	ld	(f_cpu),hl
+	ld	(f_cpu+2),de
+	call	intinit			; setup interrupts and vectors
 	ret
 
 ?init:
-	ld	hl,0100000000000000b	; assign console to ASCI1:
+;	ld	hl,1000000000000000b	; assign console to AVRCON:
+	ld	hl,0010000000000000b	; assign console to ASCI1:
 	ld	(@civec),hl
 	ld	(@covec),hl
 	ld	hl,0000000000000000b	; assign printer to nothing:
 	ld	(@lovec),hl
-	ld	hl,0100000000000000b	; assign AUX to ASCI0:
+	ld	hl,0000000000000000b	; assign AUX to ASCI0:
 	ld	(@aivec),hl
 	ld	(@aovec),hl
 
 
-	call	intinit		; setup interrupts and vectors
+	call	prt0ini			; init timer
+	ei
+	ld	c,2
+	call	gs_rtc			; get time and date
 
 	xor	a
-	ld	(@cbnk),a	; right now in bank 0
-
-	ld	hl,signon$msg
-	call	?pmsg		; print signon message
+	ld	(@cbnk),a		; right now in bank 0
+
+	call	pr.inln			; print signon message
+	db	13,10,13,10,'CP/M Version 3.0, Z180-Stamp BIOS v'
+	defvers
+	db	13,10
+	db	'Estimated CPU clock [Hz]: ',0
+
+	ld	hl,(f_cpu)
+	ld	de,(f_cpu+2)
+	call	pr.decl
+	call	pr.crlf
 	ret
 
 
-	cseg			; boot loading most be done from resident memory
+	cseg		; boot loading must be done from resident memory
 
 ; 	This version of the boot loader loads the CCP from a file
 ; 	called CCP.COM on the system drive (A:).
 
-
+	; First time, load the A:CCP.COM file into TPA
 ?ldccp:
-				; First time, load the A:CCP.COM file into TPA
+	ld	c,resetdsk
+	call	bdos
 	xor	a
-	ld	(ccp$fcb+15),a	; zero extent
+	ld	(ccp$fcb+15),a		; zero extent
 	ld	hl,0
-	ld	(fcb$nr),hl	; start at beginning of file
+	ld	(fcb$nr),hl		; start at beginning of file
 	ld	de,ccp$fcb
-	call	open		; open file containing CCP
+	ld	c,open			; open file containing CCP
+	call	bdos
 	inc	a
-	jp	z,no$ccp	; error if no file...
+	jp	z,no$ccp		; error if no file...
 	ld	de,0100h
-	call	setdma		; start of TPA
+	ld	c,setdma		; start of TPA
+	call	bdos
 	ld	de,128
-	call	setmulti	; allow up to 16k bytes
+	ld	c,setmulti		; allow up to 16k bytes
+	call	bdos
 	ld	de,ccp$fcb
-	call	read		; load the thing
-				; now,
-				;   copy CCP to bank 0 for reloading
-	ld	hl,0100h
-	ld	bc,ccpsize	; clone 3K, just in case
-	ld	a,(@cbnk)
-	push	af		; save current bank
-ld$1:
-	ld	a,tpa$bank
-	call	?bnksl		; select TPA
-	ld	a,(hl)
-	push	af		; get a byte
-	ld	a,2
-	call	?bnksl		; select extra bank
-	pop	af
-	ld	(hl),a		; save the byte
-	inc	hl
-	dec	bc		; bump pointer, drop count
-	ld	a,b
-	or	c		; test for done
-	jp	nz,ld$1
-	pop	af
-	call	?bnksl		; restore original bank
-	ret
+	ld	c,read			; load the thing
+	call	bdos			; read records
 
-no$ccp:				; here if we couldn't find the file
-	ld	hl,ccp$msg
-	call	?pmsg		; report this...
-	call	?conin		; get a response
-	jp	?ldccp		; and try again
+	; now, copy CCP to bank 0 for reloading
 
+	ld	bc,2*256 + tpa$bank	; c: src$bnk, b: dst$bnk
+	jr	mov_ccp
 
+	; just copy in the other direction
 ?rlccp:
+	ld	bc,tpa$bank*256 + 2	; c: src$bnk, b: dst$bnk
+mov_ccp:
+	call	?xmove
 	ld	hl,0100h
-	ld	bc,ccpsize	; clone 3K
-rl$1:
-	ld	a,2
-	call	?bnksl		; select extra bank
-	ld	a,(hl)
-	push	af		; get a byte
-	ld	a,tpa$bank
-	call	?bnksl		; select TPA
-	pop	af
-	ld	(hl),a		; save the byte
-	inc	hl
-	dec	bc		; bump pointer, drop count
-	ld	a,b
-	or	c		; test for done
-	jp	nz,rl$1
+	ld	d,h
+	ld	e,l
+	ld	bc,ccpsize		; clone 3K, just in case
+	call	?move
 	ret
 
+no$ccp:					; here if we couldn't find the file
+	call	pr.inln			; report this...
+	db	13,10,'BIOS Err on A: No CCP.COM file',0
 
-	; CP/M BDOS Function Interfaces
-
-open:
-	ld	c,15
-	jp	bdos		; open file control block
-
-setdma:
-	ld	c,26
-	jp	bdos		; set data transfer address
-
-setmulti:
-	ld	c,44
-	jp	bdos		; set record count
-
-read:
-	ld	c,20
-	jp	bdos		; read records
-
-
-signon$msg:
-	db	13,10,13,10,'CP/M Version 3.0, Z180-Stamp BIOS',13,10,0
-
-ccp$msg:db	13,10,'BIOS Err on A: No CCP.COM file',0
+	call	?conin			; get a response
+	jr	?ldccp			; and try again
 
 
 ccp$fcb:db	1,'CCP     ','COM',0,0,0,0
@@ -165,15 +148,18 @@ ccp$fcb:db	1,'CCP     ','COM',0,0,0,0
 fcb$nr:	db	0,0,0
 
 
+	dseg
 hwini_tab:
 	db	(hwini0_e-$)/2	;count
 	db	rcr,CREFSH	;configure DRAM refresh
 	db	dcntl,CWAITIO	;wait states
 	db	ccr,M_NCD	;No Clock Divide
 	db	cmr,PHI_X2	;X2 Clock Multiplier
-;TODO:	db	omr,	;Operation Mode Control Register
+	db	omcr,~M_IOC	;Operation Mode Control Register
 hwini0_e:
 	db	0		;stop mark
 
+	cseg
+f_cpu	dw	0,0		;detected CPU clock frequency [Hz]
 
 	end