Update flashfs.asm

Final update before integration in md.asm

Source/HBIOS/flashfs.asm

@@ -25,6 +25,9 @@
 FF_DBG:	.EQU	0			; DEBUG
 FF_HBX:	.EQU	1			; =0 USE STACK,  =1 USE HBX_BUF
 ;
+FF_RW		.DB	00h		; READ WRITE FLAG
+FF_TGT		.EQU	0BFB7H		; TARGET CHIP FOR R/W FILESYSTEM
+;
 ;======================================================================
 ; BIOS FLASH INITIALIZATION
 ;
@@ -46,7 +49,7 @@ FF_PROBE:
 	LD	E,C			;
 	LD	H,D			; WE INCREASE E BY $08
 	LD	L,D			; ON EACH CYCLE THROUGH
-;	
+;	 
 	PUSH	BC
 	CALL	PC_SPACE
 	LD	A,+(ROMSIZE/512)+1
@@ -55,6 +58,20 @@ FF_PROBE:
 	LD	A,'='			; NUMBER
 	CALL	COUT
 	CALL	FF_IINIT		; GET ID AT THIS ADDRESS
+;
+	PUSH	HL
+	PUSH	DE
+	LD	H,FF_TGT&$FF		; IF WE MATCH WITH
+	LD	L,FF_TGT/$FF
+	CCF				; A NON 39SF040
+	SBC	HL,DE			; CHIP SET THE
+	LD	A,(FF_RW)		; R/W FLAG TO R/O
+	OR	H
+	OR	L
+	LD	(FF_RW),A
+	POP	DE
+	POP	HL
+;
 	CALL	FF_LAND			; LOOKUP AND DISPLAY
 	POP	BC
 ;
@@ -63,6 +80,13 @@ FF_PROBE:
 	LD	C,A
 ;
 	DJNZ	FF_PROBE		; ALWAYS AT LEAST ONE DEVICE
+;
+	LD	A,(FF_RW)
+	OR	A
+	JR	NZ,FF_PR1
+	CALL PRTSTRD
+	.TEXT " FLASH FILESYSTEM ENABLED$"
+FF_PR1:
 ;
 #IF (FF_DBG==1)
 	CALL	FF_TESTING