ローメモリのチェック
朧厶ﾘ

;--- BIOS work ---  j31

_bios		segment	at 0

		org	0449h
vmode		db	?		; 449h  v mode
width		dw	?		; 44Ah  桁数


;	'scrnIBM.asm'
INBLK		equ	80h
dosscrn_sx	equ	044Ah	;50h=80	; ##156.123	桁数
dosscrn_sy	equ	0484h	;19h=25			行数
dosscrn_chr	equ	0485h	;13h=19			フォント高さ


VZのDUMP.DEF   $40:$0  $40:$4a  $40:$84
?? DUMP (0040h) ????????????????????????????????????????????????????????????
? 0000: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ゥゥゥゥゥゥゥゥ  ?
? 0010: 00 00 00 00 00 00 00 20-00 00 02 00 02 00 30 52  ゥゥゥ･ ゥゥゥ0R  ?
? 0020: 0D 1C 00 51 00 51 00 51-00 51 00 51 00 51 00 51  ゥ･Q･Q･Q･Q･Q･Q･Q  ?
? 0030: 1B 01 00 48 0F 18 64 20-00 48 00 48 3A 28 00 00  ゥ･Hゥd ･H･H:(ゥ  ?
? 0040: 00 00 00 00 00 00 00 00-00 03 50 00 60 4A 00 00  ゥゥゥゥゥP･`Jゥ  ?
　　　　　　　　　　　　　　$40:$4a　 ^^ 桁4Ah=50h=80  0:$44a
? 0050: 06 03 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ゥゥゥゥゥゥゥゥ  ?
? 0060: 07 26 00 D4 03 05 00 00-00 00 00 00 7B 0A 1C 00  ･&ピゥゥゥゥ{ゥ･  ?
? 0070: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ゥゥゥゥゥゥゥゥ  ?
? 0080: 1E 00 3E 00 18 0C 00 00-09 99 00 00 00 00 00 00  ゥ>ゥゥゥゥゥゥ･  ?
行 $40:$84 18h=24   ^^ ^^ 高さ$40:$85 0Ch=12
? 0090: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ゥゥゥゥゥゥゥゥ  ?
????????????????????????????????????????????????????????????????????????????

IBM:						;★ VTDOS対応の為ここで IBM 機種チェック 
		MOV	AX,0040H
		MOV	DS,AX
		MOV	AX,WORD PTR DS:[004AH]	; 桁数
		MOV	AH,AL
		MOV	AL,BYTE PTR DS:[0084H]	; 行数