Razorlength - 1044 Early Spring by Jong89

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Points of Interest

• 132. Site Symbol

  ( 1041 Early Spring to onwards )
  This is my interpretation of my site government symbol, which is 2 circles. It is built out of gold and billion bars.
  
  The mechanism symbolizes the dwarves' power in technology and industry. It is also a stamp of quality!
  
  - Jong89

• Δ 117. Cisterns

  ( 1044 Early Spring to onwards )
  I found that magma cisterns are pretty much useless. Still, it contrasts nicely with the blue water. - Jong89

• 75. Pressurized Magma

  ( 1041 Early Spring to onwards )
  Woohoo! Running magma for everyone! - Jong89

• 73. U/C Airship

  ( 1043 to onwards )
  I am clearly addicted to circles. It was an incredible pain to plot out this weird cigar shape.
  This mad build was planned from the beginning. Why build a giant tower? A giant tower cap farm?
  I haven't decided what name to give to the airship. - Jong89

• 72. Main Tower

  ( 1032 to onwards )
  The main tower spans the entire height of the map. It has a total of 141 built levels. Unfortunately, highest level is not available for construction. This is almost as wide as a 3x3 embark site.
  The exterior of the tower is faced with polished marble blocks and the tower is capped with a solid gold spire.
  The skydeck is approximately 83 tiles in diameter, and it casts a rather large shadow upon the land. - Jong89

• 20. U/C Apartments

  ( 1042 to onwards )
  I decided to go crazy and build the most luxurious and hedonistic apartments for my dwarves.
  This 3 story complex shown here is designed to house no more than 8 dwarves. I've got lots of married couples, but I'm not sure whether a couple needs 2 beds or 1. It seems that couples share ownership of bedrooms. Not sure about dining rooms and offices though.
  As you can see, the dwarves get running water! I plan to give them all private wells too. - Jong89

• 19. 5-32 decoder

  ( 1036 Early Winter to onwards )
  This system converts the 5 bit memory address code into 32 signals, which are used to select which byte of memory is being read or written. - Jong89

• 19. Arithmetic Logic Unit

  ( 1036 Early Winter to onwards )
  This device is an 8-bit carry look ahead adder. The lower rack of gears is the carry calculation circuit. Unlike a ripple bit adder, this device calculates all the carries simultaneously.
  Above this level are gears implementing the bitshift left and right operations, and the topmost rack is a direct transfer system to load from the memory.
  Originally, the outermost row of gears were simply power transfer gears, and the operation was selected by triggering the "root" gears. However, I discovered there was backward power flow under certain circumstances which enabled undesired operations. Therefore the outermost row of gear is now also controlled by the triggering system, to prevent undesired power propagation.
  I discovered at the last moment that I only needed to trigger alternate gears to stop the propagation :( - Jong89

• 19. Computer Clock

  ( 1036 Early Winter to onwards )
  This device is meant to execute the 6-step fetch execute cycle. Each cycle the computer prepares for and performs a single operation.
  As you can see, the clock is manually operated by dwarves. This is mainly because the optimal clock frequency is too long to be automatic. It was supposed to be operated by a lever, but then I found that there was a brief delay between the power being cut and the pump ceasing to pump. This delay is long enough for the water to travel 6 cells! - Jong89

• 19. Control Unit decoder

  ( 1036 Early Winter to onwards )
  This system interprets the 3-bit opcode from the instruction register and conducts 1 of 8 operations, read memory, store memory, add, subtract, bitshift left and right, jump to address if the accumulator is not negative.
  It will only do this when it receives the execute signal from the clock. - Jong89

• 18. ALU and MAR registers

  ( 1036 Early Winter to onwards )
  These are another 2 register.
  The left one is the ALU register which holds data from the accumulator, which is the result of the previous calculation. This is necessary as the accumulator will be changing during the calculator.
  The right one is the Memory Address Register, which tells the 5-32 decoder which memory byte to enable. - Jong89

• 18. Assorted Registers

  ( 1036 Early Winter to onwards )
  These memory registers hold various pieces of data required to run the computer. The 2x4 unit aligned differently is not a register but the control unit's output buffers.
  The top one with the yellow doors is the accumulator, which holds the results from the arithmetic unit.
  The middle 2 are the program counter and the program counter +1. The program counter (PC) tells the computer which byte contains the next instruction. PC+1 temporarily stores PC+1 until the program counter is ready to be incremented. On the other levels you may notice that PC has a little nifty mechanism on the top left which enables it to be written by the instruction register when the accumulator is not negative (and when the control unit tells it to).
  The bottom one is the instruction register. It tells the computer what to execute next and what to execute. The first 3 digits is the opcode, and operates the control unit. The last 5 digits is the operand, which usually tells the computer which byte the require bit of data is in. It can also tell the program counter what value to take on. - Jong89

• 18. Dwarven Computer

  ( 1036 Early Winter to onwards )
  This shot shows you the overview of the computer's pressure sensor deck. All the pressure plates are installed on this deck for simplicity.
  Most of the logic has been installed on the other decks.
  
  Yellow gears represent gears that are disengaged by default. Grey gears are not linked to any pressure plates. Blue gears are engages by default. Unfortunately I didn't have enough cobaltite to make all the blue gears on the upper deck so I used orthoclase instead.
  This monumental build contains 672 pumps, 2000 logs, 8500 mechanisms and thousands of other assort bits and knobs like doors and rock blocks.
  I believe this is the first programmable digital computer that anyone has built in DF. I believe it is turing complete, for anyone who cares. - Jong89

• 18. Memory Banks

  ( 1036 Early Winter to onwards )
  The computer has 256 bits of random access memory, or 32 bytes. The pumps store water on a pressure plate to store a 1 bit. Pumps on the floor above this level extract water from the pressure plate to erase bits.
  
  - Jong89

• 18. Shaved Mountainside

  ( 1029 Late Spring to onwards )
  I decided to shave down the mountainside to make the surface forest more accessible. I also wanted to reveal the full extent of the main tower. This was an extreme pain in the neck. - Jong89

• 17. Computer Plumbing

  ( 1036 Early Winter to onwards )
  This deck contains the water supply for the various components of the computer.
  The computer seems to guzzle a substantial amount water, which is highly unexpected. I thought I would only experience small evaporation losses. This effect is caused mainly by the free draining output buffers. The memory cells and memory output buffers are pump extracted, so they only use small amounts of water.
  All the water channels have been carefully blocked over to prevent tower caps from spawning. - Jong89

• 17. Memory Output Multiplexer

  ( 1036 Early Winter to onwards )
  This intimidating bank of gears collects all the signals from the memory cells to a single set of output buffers. This is more efficient than giving each memory cell its own output buffer which would double the size of the memory banks.
  This level contains the decoder enabled switches. Power is supplied from the top right, so only the column selected by the decoder will be able to power the pumps.
  The level above this contains the memory switches, while the gear racks in the top level collects the signals from the different columns.
  Originally, most of the gears on this level were grey. Then I discovered it allowed backward power flow to enable unselected columns, generating rubbish output, so I was forced to change them all to decoder triggered gears. - Jong89

• 19. Cave river

  ( 1011 Mid Spring to onwards )
  The dwarves have harnessed this cave river for their own purposes. There are no cave creatures since they all fell into the chasm years ago. - Jong89

• 11. Underground Skyways

  ( 1041 Early Spring to onwards )
  The completed skyways provide trample free access to all areas of the tower cap farm.
  With this, I can basically ignore dead plant syndrome. If it becomes a problem, I intend to dump magma over the whole thing. - Jong89

• ¶ 9. An Ashen Wasteland
  The magma pour left the tower cap farm a smoldering wasteland. It completely failed to remove the invisible molten rocks, so it counts as a partial failure. On the upside, I get this cool view of all the sand created during the earlier operation of the farm.
  Also pictured is the construction of the canal system. The bit in the main tower is the customs checkpoint. Dwarves take their security very seriously.
  The blue drawbridges should stop the water from getting into the canals prematurely. - Jong89
• 7. Atom Smasher

  ( 1041 Early Spring to onwards )
  Just in case I need to service the delivery pipes. - Jong89

• 15. Fortifications

  ( 1004 to onwards )
  The entrance design is a no-frills air lock and maze combo. When the alarm is sounded, the yellow bridge is shut to force invaders to pass the numerous traps in the maze, while fleeing dwarves can still safely escape. The fortified walls enable marksdwarves to shoot at any goblins that manage to avoid the traps.
  The roads are all constructed out of floors, so there is ample room for trap growth.
  Of special note is the funnel traps used to force invaders outside the fort to follow a set path. Traps placed at the chokepoints are far more effective than normal.
  The pressure plate / spike trap is specially design to combat mass charges. The spikes are capable of piercing any number of creature on tile, so melee soldiers need to avoid fighting in that zone. The spacing also knocks out invaders adjacent to the triggering one. - Jong89

• 15. Temporary Housing

  ( 1003 Mid Spring to onwards )
  Here are the modest accommodations of the dwarves. It will probably be a long time before we start work on the living spaces of the fortress. - Jong89

• 13. Sprinkler Control Room

  ( 1011 Mid Spring to onwards )
  All sprinklers can be individually controlled from this room. The levers are arranged in the same pattern as the sprinklers on the map.
  The control room also includes master control switches. The north cobaltite switch opens all the hatches at once. The microcline switches open up hatches in each quadrant, as defined by the lever arrangement on this floor.
  Dwarf safety is always a priority. Double doors prevent inadvertent flooding and multiple water barriers give the dwarves maximum control over the environment.
  Obviously this took a very large number of mechanisms to construct. - Jong89

• 13. Sprinklers

  ( 1011 Mid Spring to onwards )
  The sprinkler system is complete and the tower cap chamber is finally in action.
  The sprinkler system allows us to deliver small amounts of water to targeted points in the chamber. I cannot exactly target which tile I want to muddy but I can at least muddy the tile without filling the entire chamber with water.
  The sprinklers themselves are carved downward stairs with lever operated floor hatches on the.
  Tests have shown that the flow is inadequate due to the imperfect nature of the flow model. Hopefully this will be rectified with the eventual installation of the pump tower. - Jong89

• 2. Magma Chamber

  ( 1016 Mid Spring to onwards )
  This isn't your average magma chamber.
  8 z-levels in height, 2 levels of molten rock, its a magma ocean! :D
  The dwarf children slaving at the pumps demonstrate the principles of pressurized magma. - Jong89

• 1. Power Plant

  ( 1034 Mid Autumn to onwards )
  The fortress power plant currently supplies 18700 units of power to the greedy computer. Its still got room for expansion.
  This power plant is really overkill. - Jong89

• 1. The ultimate pump tower

  ( 1038 Mid Spring to onwards )
  Since most of the main tower is too narrow to accommodate a pump tower, I built this pump tower into the mountain for my mad scheme to supply running water and magma to every floor of the main tower.
  Indoor pools for everyone! - Jong89

• 9. Tower cap chamber

  ( 1011 Mid Spring to onwards )
  This massive 4 level high chamber is big enough to contain artificial hills and large support pillars. It could probably comfortably contain the average dwarven fortress.
  
  While at this stage it can already be considered a rousing success, there are a number of planned additions. There is the incomplete skyway system for trample free harvesting. There is also the planned canal system for pointless fun. - Jong89

Related Maps:

Razorlength

• 1044 Early Spring [R]
• 1043 Mid Spring
• 1041 Early Spring
• 1038 Mid Spring
• 1036 Early Winter
• 1034 Mid Autumn
• 1032 Early Spring
• 1029 Late Spring
• 1016 Mid Spring
• 1013 Late Spring
• 1012 Mid Spring
• 1011 Mid Spring
• 1010 Late Spring
• 1009 Late Spring
• 1008 Mid Spring
• 1007 Mid Spring
• 1006 Early Spring
• 1005 Early Spring
• 1004 Mid Spring
• 1003 Mid Spring
• 1002 Late Spring
• 1001 Early Spring

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Map details:

• Fortress Name: Razorlength
• Map Year: 1044 Early Spring
• Author: Jong89
• Submitted by: Jong89
• Date Added: 08/04/2010