New ROMLDR and INTRTC driver

- Refactored romldr.asm
- Added new periodic timer based RTC driver

Source/HBIOS/cfg_dyno.asm

@@ -3,7 +3,7 @@
 ;   ROMWBW 2.X CONFIGURATION DEFAULTS FOR DYNO
 ;==================================================================================================
 ;
-; THIS FILE CONTAINS THE FULL SET OF DEFAULT CONFIGURATION SETTINGS FOR THE PLATFORM
+; THIS FILE CONTAINS THE FULL EQU OF DEFAULT CONFIGURATION SETTINGS FOR THE PLATFORM
 ; INDICATED ABOVE. THIS FILE SHOULD *NOT* NORMALLY BE CHANGED.	INSTEAD, YOU SHOULD
 ; OVERRIDE ANY SETTINGS YOU WANT USING A CONFIGURATION FILE IN THE CONFIG DIRECTORY
 ; UNDER THIS DIRECTORY.
@@ -20,9 +20,7 @@ BATCOND		.EQU	FALSE		; ENABLE LOW BATTERY WARNING MESSAGE
 HBIOS_MUTEX	.EQU	FALSE		; ENABLE REENTRANT CALLS TO HBIOS (ADDS OVERHEAD)
 USELZSA2	.EQU	TRUE		; ENABLE FONT COMPRESSION
 ;
-BOOTTYPE	.EQU	BT_MENU		; BT_[MENU|AUTO], IF AUTO, BOOT DEFAULT AFTER TIMEOUT
-BOOT_TIMEOUT	.EQU	20		; AUTO BOOT TIMEOUT IN SECONDS, 0 FOR IMMEDIATE BOOT
-BOOT_DEFAULT	.EQU	'Z'		; AUTO BOOT SELECTION TO INVOKE AT TIMEOUT
+BOOT_TIMEOUT	.EQU	0		; AUTO BOOT TIMEOUT IN SECONDS, 0 TO DISABLE
 ;
 CPUOSC		.EQU	18432000	; CPU OSC FREQ IN MHZ
 INTMODE		.EQU	2		; INTERRUPTS: 0=NONE, 1=MODE 1, 2=MODE 2
@@ -63,6 +61,8 @@ CRTACT		.EQU	FALSE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
 VDAEMU		.EQU	EMUTYP_ANSI	; VDA EMULATION: EMUTYP_[TTY|ANSI]
 ANSITRACE	.EQU	1		; ANSI DRIVER TRACE LEVEL (0=NO,1=ERRORS,2=ALL)
 ;
+TIMRTCENABLE	.EQU	FALSE		; ENABLE PERIODIC TIMER CLOCK DRIVER (TIMRTC.ASM)
+;
 HTIMENABLE	.EQU	FALSE		; ENABLE SIMH TIMER SUPPORT
 SIMRTCENABLE	.EQU	FALSE		; ENABLE SIMH CLOCK DRIVER (SIMRTC.ASM)
 ;