X-Git-Url: http://cloudbase.mooo.com/gitweb/avrcpm.git/blobdiff_plain/a54e22b7b347f891ef00b8b25a798311082eaa61..846ffdc92a6d4d2520e7cbd55ec5a3c91327f2c8:/avrcpm/cpm/bios.asm?ds=sidebyside

diff --git a/avrcpm/cpm/bios.asm b/avrcpm/cpm/bios.asm
index b5985f7..1f44c64 100644
--- a/avrcpm/cpm/bios.asm
+++ b/avrcpm/cpm/bios.asm
@@ -13,16 +13,19 @@
 ;
 ;    You should have received a copy of the GNU General Public License
 ;    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;
+;    $Id$
+;
 
 msize:	equ	62	;size of available RAM in k
 
 bias:	equ	(msize-20) * 1024 
-ccp:	equ	$3400+bias	;base of cpm ccp
-bdos:	equ	ccp+$806	;base of bdos
-bios:	equ	ccp+$1600	;base of bios
-cdisk:	equ	$0004		;current disk number (0 ... 15)
-iobyte:	equ	$0003		;intel iobyte
-buff:	equ	$0080		;default buffer address
+ccp:	equ	3400h+bias	;base of cpm ccp
+bdos:	equ	ccp+806h	;base of bdos
+bios:	equ	ccp+1600h	;base of bios
+cdisk:	equ	0004h		;current disk number (0 ... 15)
+iobyte:	equ	0003h		;intel iobyte
+buff:	equ	0080h		;default buffer address
 retry:	equ	3		;max retries on disk i/o before error
 
 cr:	equ	13
@@ -68,7 +71,7 @@ const:
 
 conin:
 	in a,(0)
-	cp $ff
+	cp 0ffh
 	jp nz,conin
 
 	in a,(1)
@@ -90,7 +93,7 @@ punch:
 	ret
 
 reader:
-	ld a,$1F
+	ld a,01Fh
 	ret
 
 prmsg:
@@ -116,12 +119,12 @@ prhex:
 	;	fall thru
 
 prhexdigit:
-	and	$0f
+	and	00fh
 	cp	10
 	jp	c,prd1
-	add	7
+	add	a,7
 prd1:
-	add	'0'
+	add	a,'0'
 	ld	c,a
 	jp	conout
 
@@ -152,7 +155,7 @@ boot:
 	add	hl,de
 	ld	a,(hl)		;get drm
 	inc	a
-	and	$0fc
+	and	0fch
 	rrca			;4 dir entries per sector
 	rrca			;Number of sectors to init
 	push	af
@@ -228,7 +231,7 @@ boot0:
 	push	de
 	ld	hl,dirbuf	;Clear dirbuf
 	ld	c,128
-	ld	a,$E5
+	ld	a,0E5h
 boot_cl:
 	ld	(hl),a
 	inc	hl
@@ -477,7 +480,7 @@ dpbrd:	dw 32		;SPT: sectors per track
 	db 7		;BLM: Data Allocation Mask
 	db 0		;Extent mask
 	dw 55		;DSM: Disk storage capacity
-	dw 15		;DRM, no of directory entries
+	dw 31		;DRM, no of directory entries
 	db 128		;AL0
 	db 0		;AL1
 	dw 0		;CKS, size of dir check vector