Problem with Token-Ring interface on Cisco 2612 Router - Interface down, line protocol down.

I have a Cisco 2612 router which died, an IBM MAU which also died, and I got a used replacement of both.   The router was basically used to connect a token ring subnet w/ our AS/400 on it,  to our ethernet segment.    

The physical connectivity is:

AS/400(tokenring) ------ IBM MAU ------ (TR-port-> 2612 Router <--Eth0 port) ------ Ethernet segment

This set up used to work before the original router died.   Now I can't seem to get the Token-ring segment working.    My token ring interface  (TokenRing0/0) just sits on this status:
      TokenRing0/0 down, Line protocol down.  
If I connect the AS/400 to the MAU as well, then the status says :
     TokenRing0/0 reset, Line protocol down.  

Here is an output of my status right now, with only the Router connected to the MAU:

bal-int-router#show int TokenRing0/0
TokenRing0/0 is down, line protocol is down
  Hardware is HAWKEYE, address is 0050.edc1.6f84 (bia 0050.edc1.6f84)
  Internet address is 192.168.90.1/24
  MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation SNAP, loopback not set
  Keepalive set (10 sec)
  ARP type: SNAP, ARP Timeout 04:00:00
  Ring speed: 16 Mbps
  Duplex: half
  Mode: Classic token ring station
  Full duplex capable
  Ethernet Transit OUI: 0x000000
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 17 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 transitions
bal-int-router#



I have absolutely no idea how to make the device be UP, UP....    



Here is my running config:

bal-int-router#show running
Building configuration...

Current configuration : 855 bytes
!
version 12.2
service config
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname bal-int-router
!
logging queue-limit 100
enable secret --- ----
enable password --------
!
memory-size iomem 10
ip subnet-zero
!
!
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface Tunnel0
 no ip address
!
interface Ethernet0/0
 ip address 192.168.1.3 255.255.255.0
 half-duplex
 no cdp enable
!
interface TokenRing0/0
 ip address 192.168.90.1 255.255.255.0
 ring-speed 16
 no cdp enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.1.1
ip http server
!
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
snmp-server community blkro! RO
snmp-server enable traps tty
!
dial-peer cor custom
!
!
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 password gotham100
 login
!
end

bal-int-router#


Any help is greatly appreciated...