Add NS MM58167B RTC Driver

- This is currently specific to the S100 systems interface.
2026-02-06 22:13:13 -06:00 · 2025-11-14 14:26:21 -08:00
parent 0656589f06
commit 9233d19c2c
40 changed files with 101 additions and 31 deletions
--- a/Source/HBIOS/Config/SZ180_std.asm
+++ b/Source/HBIOS/Config/SZ180_std.asm
@@ -58,6 +58,7 @@ Z180_MEMWAIT	.SET	1		; Z180: MEMORY WAIT STATES (0-3)
 Z180_IOWAIT	.SET	3		; Z180: I/O WAIT STATES TO ADD ABOVE 1 W/S BUILT-IN (0-3)
 ;
 INTRTCENABLE	.SET	TRUE		; ENABLE PERIODIC INTERRUPT CLOCK DRIVER (INTRTC.ASM)
+MMRTCENABLE	.SET	TRUE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
 ;
 ASCIENABLE	.SET	TRUE		; ASCI: ENABLE Z180 ASCI SERIAL DRIVER (ASCI.ASM)
 PLDSERENABLE	.SET	TRUE		; PLDSER: ENABLE PLD-USB SERIAL DRIVER (PLDSER.ASM)
--- a/Source/HBIOS/Config/SZ80_std.asm
+++ b/Source/HBIOS/Config/SZ80_std.asm
@@ -55,6 +55,8 @@ MEMMGR		.SET	MM_SZ80		; MEMORY MANAGER: MM_[SBC|Z2|N8|Z180|Z280|MBC|RPH|MON|EZ51
 FPLED_ENABLE	.SET	TRUE		; FP: ENABLES FRONT PANEL LEDS
 FPLED_IO	.SET	$05		; FP: PORT ADDRESS FOR FP LEDS
 ;
+MMRTCENABLE	.SET	TRUE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 PLDSERENABLE	.SET	TRUE		; PLDSER: ENABLE PLD-USB SERIAL DRIVER (PLDSER.ASM)
 SCCENABLE	.SET	TRUE		; SCC: ENABLE ZILOG SCC SERIAL DRIVER (SCC.ASM)
 SCONENABLE	.SET	TRUE		; SCON: ENABLE S100 CONSOLE DRIVER (SCON.ASM)
--- a/Source/HBIOS/cfg_DUO.asm
+++ b/Source/HBIOS/cfg_DUO.asm
@@ -169,6 +169,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_DYNO.asm
+++ b/Source/HBIOS/cfg_DYNO.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_EPITX.asm
+++ b/Source/HBIOS/cfg_EPITX.asm
@@ -164,6 +164,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_EZZ80.asm
+++ b/Source/HBIOS/cfg_EZZ80.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_GMZ180.asm
+++ b/Source/HBIOS/cfg_GMZ180.asm
@@ -163,6 +163,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_HEATH.asm
+++ b/Source/HBIOS/cfg_HEATH.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_MASTER.asm
+++ b/Source/HBIOS/cfg_MASTER.asm
@@ -204,6 +204,8 @@ DS7RTCMODE	.EQU	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.EQU	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.EQU	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 PCRTCENABLE	.EQU	FALSE		; PCRTC: DISABLE DS12885 etc. RTC
 PCRTC_BASE	.EQU	$C0		; Default port for PCRTC, like DSRTC.
 ;
--- a/Source/HBIOS/cfg_MBC.asm
+++ b/Source/HBIOS/cfg_MBC.asm
@@ -162,6 +162,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTC_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_MK4.asm
+++ b/Source/HBIOS/cfg_MK4.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_MON.asm
+++ b/Source/HBIOS/cfg_MON.asm
@@ -165,6 +165,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_MSX.asm
+++ b/Source/HBIOS/cfg_MSX.asm
@@ -171,6 +171,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_N8.asm
+++ b/Source/HBIOS/cfg_N8.asm
@@ -170,6 +170,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_NABU.asm
+++ b/Source/HBIOS/cfg_NABU.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_RCEZ80.asm
+++ b/Source/HBIOS/cfg_RCEZ80.asm
@@ -166,6 +166,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_RCZ180.asm
+++ b/Source/HBIOS/cfg_RCZ180.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_RCZ280.asm
+++ b/Source/HBIOS/cfg_RCZ280.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_RCZ80.asm
+++ b/Source/HBIOS/cfg_RCZ80.asm
@@ -171,6 +171,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_RPH.asm
+++ b/Source/HBIOS/cfg_RPH.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_SBC.asm
+++ b/Source/HBIOS/cfg_SBC.asm
@@ -163,6 +163,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_SCZ180.asm
+++ b/Source/HBIOS/cfg_SCZ180.asm
@@ -168,6 +168,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_SZ180.asm
+++ b/Source/HBIOS/cfg_SZ180.asm
@@ -165,6 +165,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 ;
 PLDSERENABLE	.SET	FALSE		; PLDSER: ENABLE PLD-USB SERIAL DRIVER (PLDSER.ASM)
--- a/Source/HBIOS/cfg_SZ80.asm
+++ b/Source/HBIOS/cfg_SZ80.asm
@@ -158,6 +158,10 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 ;
 PLDSERENABLE	.SET	FALSE		; PLDSER: ENABLE PLD-USB SERIAL DRIVER (PLDSER.ASM)
--- a/Source/HBIOS/cfg_Z80RETRO.asm
+++ b/Source/HBIOS/cfg_Z80RETRO.asm
@@ -166,6 +166,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_ZETA.asm
+++ b/Source/HBIOS/cfg_ZETA.asm
@@ -155,6 +155,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/cfg_ZETA2.asm
+++ b/Source/HBIOS/cfg_ZETA2.asm
@@ -166,6 +166,8 @@ DS7RTCMODE	.SET	DS7RTCMODE_PCF	; DS7RTC: OPERATING MODE: DS7RTCMODE_[PCF]
 ;
 DS5RTCENABLE	.SET	FALSE		; DS5RTC: ENABLE DS-1305 SPI CLOCK DRIVER (DS5RTC.ASM)
 ;
+MMRTCENABLE	.SET	FALSE		; MMRTC: ENABLE NS MM58167B RTC DRIVER (MMRTC.ASM)
+;
 SSERENABLE	.SET	FALSE		; SSER: ENABLE SIMPLE SERIAL DRIVER (SSER.ASM)
 SSERCFG		.SET	SER_9600_8N1	; SSER: SERIAL LINE CONFIG
 SSERSTATUS	.SET	$FF		; SSER: STATUS PORT
--- a/Source/HBIOS/hbios.asm
+++ b/Source/HBIOS/hbios.asm
@@ -4257,9 +4257,6 @@ HB_INITTBL:
 #IF (SIMRTCENABLE)
 	.DW	SIMRTC_INIT
 #ENDIF
-#IF (INTRTCENABLE)
-	.DW	INTRTC_INIT
-#ENDIF
 #IF (DS7RTCENABLE)
 	.DW	DS7RTC_INIT
 #ENDIF
@@ -4275,6 +4272,12 @@ HB_INITTBL:
 #IF (PCRTCENABLE)
 	.DW	PCRTC_INIT
 #ENDIF
+#IF (MMRTCENABLE)
+	.DW	MMRTC_INIT
+#ENDIF
+#IF (INTRTCENABLE)
+	.DW	INTRTC_INIT
+#ENDIF
 #IF (CPUFAM == CPU_EZ80)
 	; INITALISE ONE OF THE SUPPORTED SYSTEM TIMER TICKS DRIVERS
 	.DW	EZ80_TMR_INIT
@@ -8865,15 +8868,6 @@ SIZ_PCRTC	.EQU	$ - ORG_PCRTC
 		MEMECHO	" bytes.\n"
 #ENDIF
 ;
-#IF (INTRTCENABLE)
-ORG_INTRTC	.EQU	$
-  #INCLUDE "intrtc.asm"
-SIZ_INTRTC	.EQU	$ - ORG_INTRTC
-		MEMECHO	"INTRTC occupies "
-		MEMECHO	SIZ_INTRTC
-		MEMECHO	" bytes.\n"
-#ENDIF
-;
 #IF (DS7RTCENABLE)
 ORG_DS7RTC	.EQU	$
  #INCLUDE "ds7rtc.asm"
@@ -8892,6 +8886,24 @@ SIZ_RP5RTC	.EQU	$ - ORG_RP5RTC
 		MEMECHO	" bytes.\n"
 #ENDIF
 ;
+#IF (MMRTCENABLE)
+ORG_MMRTC	.EQU	$
+  #INCLUDE "mmrtc.asm"
+SIZ_MMRTC	.EQU	$ - ORG_MMRTC
+		MEMECHO	"MMRTC occupies "
+		MEMECHO	SIZ_MMRTC
+		MEMECHO	" bytes.\n"
+#ENDIF
+;
+#IF (INTRTCENABLE)
+ORG_INTRTC	.EQU	$
+  #INCLUDE "intrtc.asm"
+SIZ_INTRTC	.EQU	$ - ORG_INTRTC
+		MEMECHO	"INTRTC occupies "
+		MEMECHO	SIZ_INTRTC
+		MEMECHO	" bytes.\n"
+#ENDIF
+;
 #IF (SSERENABLE)
 ORG_SSER	.EQU	$
  #INCLUDE "sser.asm"
--- a/Source/HBIOS/hbios.inc
+++ b/Source/HBIOS/hbios.inc
@@ -438,6 +438,7 @@ RTCDEV_RP5	.EQU	$05		; RP5C01
 RTCDEV_DS5	.EQU	$06		; DS1305 (SPI)
 RTCDEV_EZ80	.EQU	$07		; EZ80 ON-CHIP RTC
 RTCDEV_PC	.EQU	$08		; PC style parallel RTC
+RTCDEV_MM	.EQU	$09		; NS MM58167B RTC (NO NVRAM)
 ;
 ; DSKY DEVICE IDS
 ;
--- a/Source/HBIOS/romldr.asm
+++ b/Source/HBIOS/romldr.asm
@@ -1230,26 +1230,26 @@ appload2:
 ;
 ;=======================================================================
 ; Routine - Copy chunk of data from Rom to a RAM location, source
-; chunk may span banks.
+; chunk may span banks.  Source address must be <= 32768.
 ; param : HL=Source Adr, DE=Dest Adr, BC=Length, A=Source Bank
 ;=======================================================================
 ;
-;;; loop:
-;;; 
-;;; CPYLEN = (32768 - SRCADR)
-;;; if (CPYLEN >= LEN) then CPYLEN = LEN
-;;; LEN = (LEN - CPYLEN)	; do it here to avoid saving CPYLEN
-;;; 
-;;; ; BnkCpy returns updated SRCADR, DSTADR
-;;; call BnkCpy(SRCBNK:SRCADR, DSTBNK:DSTADR, CPYLEN)
-;;; 
-;;; if (SRCADR == 32768)
-;;;   increment SRCBNK
-;;;   SRCADR = 0
-;;; 
-;;; if (LEN == 0) then done
-;;; 
-;;; goto loop
+; loop:
+; 
+; CPYLEN = (32768 - SRCADR)
+; if (CPYLEN >= LEN) then CPYLEN = LEN
+; LEN = (LEN - CPYLEN)	; do it here to avoid saving CPYLEN
+; 
+; ; BnkCpy returns updated SRCADR, DSTADR
+; call BnkCpy(SRCBNK:SRCADR, DSTBNK:DSTADR, CPYLEN)
+; 
+; if (SRCADR == 32768)
+;   increment SRCBNK
+;   SRCADR = 0
+; 
+; if (LEN == 0) then done
+; 
+; goto loop
 ;
 #if (BIOS == BIOS_WBW)
 ;