Update dsrtc.asm

Make it easier to define customer battery or supercapacitor charge rates.

Source/HBIOS/dsrtc.asm

@@ -95,6 +95,15 @@ DSRTC_CE	.EQU	%00010000	; BIT 4 IS CHIP ENABLE (CE)
 DSRTC_MASK	.EQU	%11110000	; MASK FOR BITS WE OWN IN RTC LATCH PORT
 DSRTC_IDLE	.EQU	%00100000	; QUIESCENT STATE
 ;
+; VALUES FOR DIFFERENT BATTERY OR SUPERCAPACITOR CHARGE RATES
+;
+DS1d2k		.EQU	%10100101	; 1 DIODE 2K RESISTOR (DEFAULT)
+DS1d4k		.EQU	%10100110	; 1 DIODE 4K RESISTOR
+DS1d8k		.EQU	%10100111	; 1 DOIDE 8K RESISTOR
+DS2d2k		.EQU	%10101001	; 2 DIODES 2K RESISTOR
+DS2d4k		.EQU	%10101010	; 2 DIODES 4K RESISTOR
+DS2d8k		.EQU	%10101011	; 2 DIODES 8K RESISTOR
+;
 #ENDIF
 ;
 #IF (DSRTCMODE == DSRTCMODE_MFPIC)
@@ -161,7 +170,7 @@ DSRTC_INIT1:
 	
 	LD	E,$90			; ACCESS CHARGE REGISTER
 	CALL	DSRTC_CMD		; 
-	LD	E,$A5			; STD CHARGE VALUES
+	LD	E,DS1d2k		; STD CHARGE VALUES
 	CALL	DSRTC_PUT		; 
 	CALL	DSRTC_END		; FINISH REG WRITE