diff --git a/cos_117.cfg b/cos_117.cfg
new file mode 100644
index 0000000..c6e380c
--- /dev/null
+++ b/cos_117.cfg
@@ -0,0 +1,455 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;
+; Configuration for a single-processor X-MP
+; Matches HW config for machine SN#302
+;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+CpuMemorySize         0x400000        ; We have 8MWords (64-bits each) of memory
+BufferMemorySize      0x400000        ; We have 8MWrods of buffer memory as well
+
+StartupCpuIdx         0              ; This will set up the first CPU to come out of reset (on instructions from the IOP)
+StartupIopIdx         0              ; The first one (the MIOP) is the one to leave reset first
+
+ClusterCount          3              ; Single-processor machines have 3 clusters - that is the number of inter-processor communication register sets
+
+MemoryDumpFile        dump/mem.dmp        ; If we get terminated, dump mainframe memory to this file
+BufferMemoryDumpFile  dump/buffer.dmp     ; If we get terminated, dump buffer memory to this file
+
+MultiThreaded         no
+MachineType           XMP1
+
+WindowWidth           120
+WindowHeight          40
+
+DefaultLogLevel       None
+
+EnableTimeStamp       yes
+
+
+LogFileName           dump/cray_sim.log
+
+OsType                COS
+
+LogUnusedChannels     no
+
+BreakPoints {
+}
+
+EventPoints {
+}
+
+WatchPoints {
+}
+
+CpuCount 1
+Cpus {
+	Default {
+;		HistoryBuffer 1000000
+;		DefaultLogLevel All
+;		InstructionBurstSize 100
+;		TimerIncrement 1000
+;		MemoryPokes {
+;			0x00207B:p0 0006000 ; Change JSP to J to skip mainframe memory test
+;		}
+	}
+}
+
+IopClusters {
+	IopDCluster {
+		BufferMemoryPokes {
+				0x42B7 0x0200 ; Patch up IOP memory test routine to exit immediately
+				0x4476 0x0000 ; Patch up ovrelay loading code not to clear end of memory: it's 0 already in the simulator
+				0x43DA 0x0000 ; Patch up buffer memory test to exit quickly
+				0x3939 0x0028 ; Set CK0 device address to 050 - Hayes clock (should be 070 for Chronolog clocks)
+			; Make sure we always wait for completion on IOP-to-IOP transfers
+			;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+			;	0x09BC 0x7e00
+			;	0x0a36 0x0000
+			;	0x0a59 0x0000
+			;	0x0a80 0x7710
+		}
+
+		BufferImageFiles {
+			0x0000 target/cos_117/iop_kern.bin               ; The first IOP boots from buffer memory. Pre-load the boot image.
+		}
+		
+		Iops {
+			0 {
+				MemoryDumpFile dump/iop0.dmp
+;				DefaultLogLevel None
+				Type MIOP
+				ChannelCount 42
+				InstructionBurstSize 100
+				TimerLimit 79999
+				Channels {
+					ERA {
+						ChannelIdx 016
+					}
+					Expander {
+						ChannelIdx 017
+						DeviceCount 64
+						Devices {
+							Tape {
+								ChannelIdx 022
+								Interrupt 5
+								Tape boot_tape.tap
+								Pokes {
+									boot_tape.tap {
+										0 {
+											0x04610 { Size 2 Value 0x1001 BigEndien yes } ; override long delay in INDD29 to speed bootup
+		;									0x1E2C0 { Size 2 Value 0x0010 BigEndien yes } ; override large loop in XDK to quickly terminate
+		;									0x256fd { Size 2 Value 0x0000 BigEndien yes } ; override call to MFINIT in START0
+		;									0x25783 { Size 2 Value 0x0000 BigEndien yes } ; override call to YIELD in START0
+											;0x4aefb { Size 1 Value 0x01 } ; override call to long delay in START0
+											0x3D24B { Size 1 Value 0x28 } ; Make XCLOCK restore the proper device address upon exit
+											0x3d6a3 { Size 1 Value 0x28 } ; Make XCLOCK use channel 51 for responses
+											0x3d7c3 { Size 1 Value 0x28 } ; Make XCLOCK use channel 51 for responses
+											0x3d399 { Size 1 Value 0x28 } ; Make XCLOCK use channel 51 for responses
+											0x3d49b { Size 1 Value 0x28 } ; Make XCLOCK use channel 51 for responses
+		;									0x138F5 { Size 2 Value 0x1010 BigEndien yes } ; patch up timeout in BMXCON
+											; Make calls for buffer transfer in START3 WAIT for return to work around synchrnization problems between IOPs in a multi-thread simulation
+											;0x4b797 { Size 1 Value 0x00 }
+		;									0x25BCB { Size 2 Value 0x1000 } ; A = 0
+		;									0x25BCF { Size 2 Value 0x1800 } ; A = ...
+		;									0x25BD0 { Size 2 Value 0x1D18 } ;     0x1D18
+		;									0x25BD1 { Size 2 Value 0x7C09 } ; R = OR[9]
+		;									0x25BD2 { Size 2 Value 0x2119 } ; A = OR[281]
+		;									0x25BD3 { Size 2 Value 0x8607 } ; P = P + 7, A # 0
+										}
+									}
+								}
+							}
+							AmpexDM980Disk {
+		;						Must be an Ampex DM980 from this: http://bitsavers.trailing-edge.com/pdf/dilog/30006-1_DQ202A_Sep81.pdf - though as far as format goes, it seems identical to the CDC SMD9762
+		;						It's a 80MB drive, but formatted as a 64MB one (leaving the last sector on each track empty)
+								;DefaultLogLevel All
+								ChannelIdx 060
+								Interrupt 6
+								ImageFileName exp_disk.img
+								Heads 5
+								Sectors 35
+								Tracks 823
+								SectorSize 512
+							}
+							Printer {
+								ChannelIdx 017
+								Interrupt 3
+								Name PR0
+								PrintFileName pr0.txt
+							}
+							Clock {
+								;DefaultLogLevel All
+								PrimaryChannelIdx 050
+								Interrupt 1
+								Name CK0
+								ResponseTimeout 500
+							}
+						}
+						;UseDummyDevices yes
+					}
+					CI {
+;						DefaultLogLevel All
+						IopChannelIdx 020
+						CrayChannelIdx 9
+					}
+					CO {
+;						DefaultLogLevel All
+						IopChannelIdx 021
+						CrayChannelIdx 8
+					}
+					CONC {
+						InputChannelIdx 024
+						OutputChannelIdx 025
+						PollDelay 100
+					}
+					Console {
+						TIChannelIdx 040
+						TOChannelIdx 041
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+					Console {
+						TIChannelIdx 042
+						TOChannelIdx 043
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+					Console {
+						TIChannelIdx 044
+						TOChannelIdx 045
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+					Console {
+						TIChannelIdx 046
+						TOChannelIdx 047
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+				}
+				BreakPoints {
+		;			0x210F { Type Trace Message "FATAL handler called {stack}" }
+		;			0x326A { Type LogOn }
+		;;			0x3ba6 { Type LogOn }
+		;			0x1697 { Type LogOn } ; Breakpoint in error case of HSPW
+		;			0x169D { Type Terminate }
+		;;			0x167C { Type LogOn } ; Breakpoint in the call that fails
+		;			0x4C58 { Type Trace Message "0x4C58 called {stack}" }
+		;			0x167C { Type Trace Message "0x167C called {stack}" }
+		;			0x1716 { Type Trace Message "0x1716 called {stack}" }
+		;			0x47EB { Type Trace Message "passing through 0x47EB {stack}" }
+				}
+				EventPoints {
+		;			"CPU0 Coming out of reset" { Type LogOn TriggerCnt 2 }
+				}
+			}
+			1 {
+				MemoryDumpFile dump/iop1.dmp
+				Type BIOP
+				ChannelCount 42
+				InstructionBurstSize 100
+				TimerLimit 79999
+				Channels {
+					HIA {
+						ChannelIdx 014
+					}
+					HOA {
+						ChannelIdx 015
+					}
+					DD29 {
+						ChannelIdx 020
+						ImageFileName disk/biop_dk20.img
+					}
+					DD29 {
+						ChannelIdx 021
+						ImageFileName disk/biop_dk21.img
+					}
+					DD29 {
+						ChannelIdx 022
+						ImageFileName disk/biop_dk22.img
+					}
+					DD29 {
+						ChannelIdx 024
+						ImageFileName disk/biop_dk24.img
+					}
+					DD29 {
+						ChannelIdx 025
+						ImageFileName disk/biop_dk25.img
+					}
+					DD29 {
+						ChannelIdx 026
+						ImageFileName disk/biop_dk26.img
+					}
+					DD29 {
+						ChannelIdx 030
+						ImageFileName disk/biop_dk30.img
+					}
+					DD29 {
+						ChannelIdx 031
+						ImageFileName disk/biop_dk31.img
+					}
+					DD29 {
+						ChannelIdx 032
+						ImageFileName disk/biop_dk32.img
+					}
+					Console {
+						TIChannelIdx 042
+						TOChannelIdx 043
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+				}
+				BreakPoints {
+				}
+			}
+			2 {
+				Exists no
+				MemoryDumpFile dump/iop2.dmp
+				Type DIOP
+				ChannelCount 42
+				InstructionBurstSize 100
+				TimerLimit 79999
+				Channels {
+					Console {
+						TIChannelIdx 042
+						TOChannelIdx 043
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+				}
+				BreakPoints {}
+			}
+			3 {
+				MemoryDumpFile dump/iop3.dmp
+				Type XIOP
+				ChannelCount 42
+				InstructionBurstSize 100
+				TimerLimit 79999
+				Channels {
+					Bmx {
+						ChannelIdx 020
+						DelayLimit 10
+						Devices {
+							Tape {
+								DeviceName BmxTape0
+								DeviceAddress 0x0
+								Tape tape/bmt_00.tap
+							}
+							Tape {
+								DeviceName BmxTape1
+								DeviceAddress 0x1
+								Tape tape/bmt_01.tap
+							}
+							Tape {
+								DeviceName BmxTape2
+								DeviceAddress 0x2
+								Tape tape/bmt_02.tap
+							}
+							Tape {
+								DeviceName BmxTape3
+								DeviceAddress 0x3
+								Tape tape/bmt_03.tap
+							}
+							Tape {
+								DeviceName BmxTape4
+								DeviceAddress 0x4
+								Tape tape/bmt_04.tap
+							}
+							Tape {
+								DeviceName BmxTape5
+								DeviceAddress 0x5
+								Tape tape/bmt_05.tap
+							}
+							Tape {
+								DeviceName BmxTape6
+								DeviceAddress 0x6
+								Tape tape/bmt_06.tap
+							}
+							Tape {
+								DeviceName BmxTape7
+								DeviceAddress 0x7
+								Tape tape/bmt_07.tap
+							}
+						}
+					}
+					Bmx {
+						ChannelIdx 021
+						DelayLimit 10
+						Devices {
+							Tape {
+								DeviceName BmxTape8
+								DeviceAddress 0x8
+								Tape tape/bmt_08.tap
+							}
+							Tape {
+								DeviceName BmxTape9
+								DeviceAddress 0x9
+								Tape tape/bmt_09.tap
+							}
+							Tape {
+								DeviceName BmxTape10
+								DeviceAddress 0xa
+								Tape tape/bmt_10.tap
+							}
+							Tape {
+								DeviceName BmxTape11
+								DeviceAddress 0xb
+								Tape tape/bmt_11.tap
+							}
+							Tape {
+								DeviceName BmxTape12
+								DeviceAddress 0xc
+								Tape tape/bmt_12.tap
+							}
+							Tape {
+								DeviceName BmxTape13
+								DeviceAddress 0xd
+								Tape tape/bmt_13.tap
+							}
+							Tape {
+								DeviceName BmxTape14
+								DeviceAddress 0xe
+								Tape tape/bmt_14.tap
+							}
+							Tape {
+								DeviceName BmxTape15
+								DeviceAddress 0xf
+								Tape tape/bmt_15.tap
+							}
+						}
+					}
+					Bmx {
+						ChannelIdx 022
+						DelayLimit 10
+						Devices {
+							Tape {
+								DeviceName BmxTape16
+								DeviceAddress 0x8
+								Tape tape/bmt_16.tap
+							}
+							Tape {
+								DeviceName BmxTape17
+								DeviceAddress 0xc0
+								Tape tape/bmt_17.tap
+							}
+						}
+					}
+					Bmx {
+						ChannelIdx 023
+						DelayLimit 10
+						Devices {
+							Tape {
+								DeviceName BmxTape18
+								DeviceAddress 0x8
+								Tape tape/bmt_18.tap
+							}
+							Tape {
+								DeviceName BmxTape19
+								DeviceAddress 0xc0
+								Tape tape/bmt_19.tap
+							}
+						}
+					}
+					Console {
+						TIChannelIdx 042
+						TOChannelIdx 043
+						NewTerminalCommand          "xterm -e {cmd}&"
+						ConsoleCommandLinux         "telnet {host} {port}"
+						ConsoleCommandWindows       "putty.exe  -load Unicos -telnet  -P {port} {host}"
+						MapBackspace                yes
+						BackspaceChar               127
+						EatLf                       no
+					}
+				}
+				BreakPoints {
+				}
+			}
+		}
+	}
+}
+