diff --git a/build/build.tcl b/build/build.tcl
index 947b0074..d00b75f0 100644
--- a/build/build.tcl
+++ b/build/build.tcl
@@ -141,7 +141,8 @@ respond "*" ":pdump sys;atsign ddt\r"
 respond "*" ":kill\r"
 
 respond "*" ":midas .;_system;its\r"
-respond "MACHINE NAME =" "AI\r"
+respond "MACHINE NAME =" "DB\r"
+respond "Configuration?" "RP06\r"
 expect ":KILL"
 
 respond "*" ":midas .;@ ddt_system;ddt\r"
diff --git a/src/system/config.202 b/src/system/config.202
index 2c5d1661..4bfdfcd8 100644
--- a/src/system/config.202
+++ b/src/system/config.202
@@ -916,6 +916,72 @@ TERMIN
 TERMIN
 ] ;DU
 
+IFE MCOND DB,[		;DistriBution world
+DEFOPT KS10P==1		;DB is a KS10 
+
+IF1,[
+PRINTX /Configuration? (RP06, RP07, RM03 or RM80) /
+.TTYMAC CNFG
+DBRP06==0 ? DBRP07==0 ? DBRM03==0 ? DBRM80==0
+DB!CNFG==1
+IFE DBRP06\DBRP07\DBRM03\DBRM80, .ERR "CNFG" unknown.
+TERMIN
+]
+
+DEFOPT MAXJ==60.	;Max number of jobs allowed
+DEFOPT NQCHN==30.	;Max number of user disk channels open in system
+DEFOPT SCHBLN==10.	;Number of runnable jobs to remember
+DEFOPT SWBLK==1		;1= 1=> swap blocking, 0=> privileged user
+DEFOPT SWPWSP==0	;1= Use working-set swap scheduler
+DEFOPT PAGPRE==1	;1= Use page-in preemption
+
+DEFOPT DMDSK==1		;1= Use DM DSK format
+DEFOPT QRSRVP==1	;1= Has reserved disk packs (Secondary pack)
+DEFOPT QAUTHP==1	;1= Keep track of file authors
+
+DEFOPT NQS==1		;# of disk drive units
+IFN DBRP06, DEFOPT NTUTBL==4	;# 1K blocks in a TUT (better agree with
+IFN DBRP07, DEFOPT NTUTBL==9	; RP06 DEFS, RP07 DEFS,
+IFN DBRM03, DEFOPT NTUTBL==2	; RM03 DEFS or RM80 DEFS)
+IFN DBRM80, DEFOPT NTUTBL==3
+
+DEFSYM NUDSL==500.	;# directories in file system (better agree with
+			; SALV and DSKDMP)
+DEFOPT RH11P==1		; Has RH11 controller
+IFN DBRP06, DEFOPT RP06P==1	; with one RP06
+IFN DBRP07, DEFOPT RP07P==1	; with one RP07
+IFN DBRM03, DEFOPT RM03P==1	; with one RM02/3
+IFN DBRM80, DEFOPT RM80P==1	; with one RM80
+
+DEFOPT NMTCS==1		;Number of magtape units (so why not NMTUS?)
+DEFOPT TM03S==1		;TM03/RH11 Unibus tape controller
+
+DEFOPT DZ11P==1		;Has DZ11 TTY controllers
+ DEFOPT DZ11NB==1	; 1 of them
+ DEFSYM DZ0BA=:760010
+
+DEFOPT NKSTYS==1	;# KS-10 8080 console 0 TTYs
+DEFOPT NDZTYS==8.	;# DZ-11 TTYs
+DEFOPT NSTTYS==4.	;# of STY's (Pseudo-TTY's)
+
+DEFOPT TSYSM==512.	;Total PDP10 1K memory blocks
+DEFOPT NMMP==4		;# exec pages for MMP table (# vir pgs/512.)
+
+;;; Next four better agree with SYSTEM;KSDEFS:
+DEFSYM PMAGEM==020000	;2.5 Age bit
+DEFSYM PMCSHM==010000	;2.4 Cache enable bit
+DEFSYM PMRCM==001777	;2.1 - 1.1 Physical page number
+			;	(The page table supports 20 bit physical
+			;	 addresses.) 
+DEFSYM PMUNSD==146000	;Unused bits
+
+DEFINE ITSIRP BODY
+IRPS ITS,,[DB]
+BODY
+TERMIN
+TERMIN
+] ;DB
+
 ; Default settings for all configuration-dependent assembly parameters.
 ; If a system definition has already set a value for a parameter, the
 ; default here will NOT be used.  
diff --git a/src/system/ttytyp.317 b/src/system/ttytyp.317
index c32792ac..6e1e65c8 100644
--- a/src/system/ttytyp.317
+++ b/src/system/ttytyp.317
@@ -500,3 +500,16 @@ MCONDX DU,{				;;; DU
 	TTDPRT 10,SPEED=9600		;T10 DZ Line 10
 
 .ENDC ;}
+
+MCONDX DB,{				;;; DB
+	TTDLA36 0,SPEED=1200,HOR=132.,TT=%TTLCL	;T00 System Console
+	TTDPRT 1,SPEED=300		;T01 DZ Line 1 (300 baud)
+	TTDPRT 2,SPEED=1200		;T02 DZ Line 2 (1200 baud)
+	TTDPRT 3,SPEED=2400		;T03 DZ Line 3 (2400 baud)
+	TTDPRT 4,SPEED=4800		;T04 DZ Line 4 (4800 baud)
+	TTDPRT 5,SPEED=9600		;T05 DZ Line 5
+	TTDVT 6,SPEED=9600,TT=%TTLCL	;T06 DZ Line 6 (Local VT52)
+	TTDVT 7,SPEED=9600		;T07 DZ Line 7 (VT52)
+	TTDAAA 10,SPEED=9600		;T10 DZ Line 10 (AAA)
+
+.ENDC ;}