This topic is for discussing the test and reproduction PCBs that I have been working on and will be working on. I placed it in tech/generic although my experience is predominantly System 11 and WPC.

<edit open> = most recent available boards list.

This edit to the original post inserts a list of the currently available and planned future boards. The list will be kept current for functionality and not stock. This means that boards may occasionally be out-of-stock awaiting a re-stock.

Prices are subject to change. All the boards are listed as BARE. They are also available complete (fully assembled / populated). Complete boards are fully socketed but do NOT contain processors or EPROMs. Boards that originally supported batteries now support batteries with an external connector or optional NVRAM (an additional charge) is available.

Documentation (online link) is provided with bare board or by request.

Please use PM until I can get a store set up. If inquiring please specify if you are interested in bare, complete or either. If you are unsure provide the game and I will guide appropriately. The PinWiki has good tables laying out boards used by machines and compatibilities. Please consult the PinWiki for further information.

System 11: https://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Games
WPC: https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Game_List_Chart

System 9 boards.

• System 9 CPU board (Space Shuttle, Sorcerer and Comet) is D-10534 (5764-10749-00).
  • Main board is SYS-009-CPU.
  • Price is $100.
  • Optional speech daughter board is S09-CPU-SPH.
  • Price is $5.

System 11 boards.

• System 11 CPU board (High Speed, Grand Lizard and Road Kings) is D-10881 (5764-10881-00).
  • Boards are SYS-011-CPU (main) + S11-CPU-DAC (DAC) + S11-CPU-A02 (amplifier) + S11-CPU-DDD (digit).
  • Price is $110.
• System 11A CPU board (Pinbot to Fire!) is D-11392 (5764-12091-00).
  • Boards are SYS-011-CPU (main) + S11-CPU-DAC (DAC).
  • Price is $105.
• System 11B CPU board (Big Guns to Whirlwind) is D-11883 (5764-12206-00).
  • Boards are SYS-011-CPU (main) + S11-CPU-DAC (DAC).
  • Price is $105.
• System 11C CPU board (The Game Show to Bugs Bunny) is D-11883 (5764-12206-00).
  • Board is SYS-011-CPU (main).
  • Price is $100.
• System 11 Special Solenoid Fuse board is a new board that individually fuses the special solenoid drive circuit and is compatible with the original Williams board.
  • Board is S11-CPU-FSS.
  • Price is $10 individually or $5 with CPU board purchase.
• System 11 Auxiliary Power board (Cyclone to Bugs Bunny) is D-11813 (5760-12184-00) or D-12247 (5763-12184-00).
  • Board is SYS-011-AUX.
  • Price is $60.
• System 11 Sound board (Fire! to Bugs Bunny) is D-11581 (5766-12130-00).
  • Boards are SYS-011-SND + S11-SND-A02.
  • Price is $60.
• System 11 Relay board is C-11902-1 (5768-12221-00) or C-11998-1 (5768-12243-00).
  • Board is SYS-011-RLY.
  • Price is $10 individually or $5 with other (major) board purchase.
• System 11 Backbox Interconnect board (Swords of Fury to Bugs Bunny) is D-12185 (5768-12304-00) or D-12313 (5768-12332-00).
  • Board is SYS-011-ICT.
  • Price is $55.
• System 11 Small Interconnect board (Big Guns and Space Station) is C-11762 (5768-12165-00).
  • Board is S11-SML-ICT.
  • Price is $30.
• System 11 Banzai Run Interconnect board is D-12112 (5768-12292-00).
  • Board is S11-BZR-ICT.
  • Price is $65.
• System 11 Black Knight 2000 Upper Playfield Interconnect board is C-12646 (5768-12398-00).
  • Board is S11-BK2-UPI.
  • Price is $30.
• System 11 Sound Overlay board is C-13287 (5768-12568-00).
  • Board is S11-OVR-SND.
  • Price is $35.

Data East boards.

• Data East CPU board is 520-5003-00 or 520-5003-01 or 520-5003-02 or 520-5003-03 or DE-262-02.
  • Board is DEC-S03-CPU.
  • Price is $100.

WPC-89 boards.

• WPC-89 Power board is A-12697 (5763-12405-00).
  • Board is WPC-089-PWR.
  • Price is $100.
• WPC-89 CPU board is A-12742 (5764-12431-00).
  • Board is WPC-089-CPU.
  • Price is $55.
• WPC-89 CPU-S board is A-17651.
  • Board is WPC-089-CPU (main) + W89-CPU-SEC (security PIC support).
  • Price is $60.
  • This configuration also supports the standard configuration.
• WPC-89 Fliptronic board is A-15028 or A-15472 (5768-13208-00).
  • Board is WPC-089-FLP.
  • Price is $45.
• WPC-89 Sound (pre-DCS) board is A-12738 (5766-12433-00).
  • Board is WPC-089-SND.
  • Price is $50.
• WPC-89 DCS board is A-16917 (5766-13306-03).
  • Board is WPC-089-DCS.
  • Price is $60.
• WPC-89 DMC board is A-14039 (5760-12710-00).
  • Board is WPC-089-DMC.
  • Price is $50.
  • Optional high voltage regulator daughter board is W89-DMC-HVR.
  • Price is $5.
• WPC-89 8-Driver (Auxiliary) board is A-16100 (5768-13391-03).
  • Board is WPC-089-AUX.
  • Price is $25.

WPC-95 boards.

• WPC-95 Power board is A-20028 (5763-14525-07).
  • Board is WPC-095-PWR.
  • Price is $100.
• WPC-95 CPU board is A-20119 or A-21377 (5764-14553-09).
  • Board is WPC-095-PWR.
  • Price is $65.
• WPC-95 AV board is A-20516 (5760-14495-10).
  • Boards are WPC-095-AVS (main) + W95-AVS-ASC (ASIC).
  • Price is $75.

WPC Opto boards.

• WPC 3-Opto board is A-13901 (5768-12686-00) or A-17042 (5768-12686-01).
  • Board has been redesigned and is WPC-OPT-R03.
  • Price is $20.
• WPC 7-Opto board is A-14977 or A-15576 or A-15595 (5768-12686-01).
  • Board has been redesigned and is WPC-OPT-R07.
  • Price is $30.
• WPC 10-Opto board (horizontal mount) is A-15430 (5768-13194-01).
  • Board has been redesigned and is WPC-OPT-X10.
  • Price is $35.
  • Compatible with games Popeye and earlier.
• WPC 10-Opto board (vertical mount) is A-18159 or A-20246 (5768-14075-01).
  • Board has been redesigned and is WPC-OPT-R10.
  • Price is $35.
  • Compatible with games Corvette and later.
• WPC 16-Opto board is A-16998 or A-17223 (5768-13739-03).
  • Board has been redesigned and is WPC-OPT-R16.
  • Price is $35.
  • Compatible with games Junk Yard and earlier.
• WPC 16-Opto board is A-22019 (5768-15444-00).
  • Board has been redesigned and is WPC-OPT-R16.
  • Price is $35.
  • Compatible with No Good Gofers and Champion Pub but must be mounted upside down.

WPC Cabinet boards.

• WPC Coin Door Interface board is A-14102 (5768-12716-00) or A-14689 (5768-12855-00).
  • Board is WPC-CDI-001.
  • Price is $30.
  • Compatible with games from Funhouse to Judge Dredd.
• WPC Coin Door Interface board is A-17051 or A-20580 or A-20949.
  • Board is WPC-CDI-002.
  • Price is $30.
  • Compatible with games from Star Trek (TNG) to Cactus Canyon including Safe Cracker.

Displays.

Alphanumeric display boards include LED blocks in a color of your choice (orange/red/green/blue/white). Green blocks are $10 extra. Blue/White blocks are $20 extra.

Dot matrix display boards include LED block matrix in your choice of either orange or white. White blocks are $25 extra.

• System 11 Discrete displays (e.g. High Speed).
  • Master board is DBM-ALP-QUD.
  • Price is $125.
  • Includes master display board and discrete displays.
• System 11 Quad display (e.g. F-14) is D-11609 (5760-12134-00).
  • Board is DBU-PNL-QUD.
  • Price is $100.
  • Compatible with Data East displays.
• System 11 Double display (e.g. Whirlwind) is D-12232 (5760-12306-00).
  • Board is DBU-PNL-DBL.
  • Price is $100.
  • Compatible with Data East displays.
• System 11 Double with Jackpot display (Taxi and Police Force).
  • Boards are DBU-PNL-DBL + DBS-DSC-NUM.
  • Price is $115.
  • An additional display for Riverboat Gambler is $15.
• System 11 Single display (e.g. Elvira and the Party Monsters) is D-12502-1 or D-12706 (5768-12378-00 or 5768-12408-00).
  • Board is DBU-PNL-SGL.
  • Price is $125. Includes TWO boards.
• Universal Alphanumeric and 7-digit Numeric display with remote selection (for bench use).
  • Boards are DBS-PNL-DBL + DBM-ALP-UNV + DMA-UNV-RMS.
  • Price is $130.
• Dot Matrix display (128 x 32).
  • Board is DBU-M16-04K.
  • Price is $110.

General specific purpose boards.

These boards are available bare but they are small so mostly requested as complete. Complete board pricing is subject to change from these published prices.

• Lamp boards.
  • LMP-SPP-007 (7-Lamp Speaker Panel = D-12501). Bare is $30.
• WPC select.
  • WPC-OPT-O24 (24-Switch Opto = A-15646). Complete is $50.
  • WPC-POS-ENC (Position Encoder = A-20533). Complete is $25.
  • WPC-PRX-GEN (Generic Eddy Sensor = A-18543). Complete is $35.
• WPC game specific.
  • Twilight Zone.
  • W89-TZN-HPD (8-High Power Driver = A-16116). Bare is $30. Complete is $70.
  • W89-TZN-O10 (Custom 10-Switch Opto = A-16807). Bare is $35. Complete is $75.
  • W89-TZN-3MG (Third Magnet Support). Complete is $30.
  • W89-TZN-CLK (Clock board = A-16219 and A-16220. Bare is $30. Complete is $100.
  • Indianapolis 500.
  • W89-I5H-ILT (4-LED Illuminated Target with original 3mm slotted opto = A-19823). Complete is $30.
  • W89-I5H-ITN (4-LED Illuminated Target with wider 5mm slotted opto and identical {narrow} mounting hole spacing). Complete is $30.
  • W89-I5H-ITW (4-LED Illuminated Target with wider 5mm slotted opto and wider mounting hole spacing. Complete is $30.

General Support boards.

Inquire for more information.

• WPC External Power board. Use a 12V power brick to relieve the +12VU supply for your add-ons.
• Speaker Pop Eliminator boards. Introduces a delay at power on and immediate cut-off at power off to eliminate the speaker pop.
• Tieback Diode boards. Simple pass-through boards to implement tieback diode modifications for safety. 100% reversible. No soldering required.
• System 11 LED Flasher Eliminator boards. Implements tieback diodes in conjunction with a modification to the Auxiliary Power board to eliminate the momentary flash with LED flashers when the flippers are energized.
• System 11 Double ROM board. Implements switching between two different game ROMs. Requires writing combined ROMs and 6264 RAM.
• WPC-89 Double ROM board. Implements switching between two different game ROMs. Requires writing combined ROMs and 62256 RAM. Two versions are available. One to support the OEM board. One to support my board.

These are tester / diagnostic boards.

• WPC opto tester bundle is $50. Also available individually.
• Bench tester bundles.
  • System 11 is $40.
  • WPC is $40.
  • System 11 + WPC is $50. Includes only one of each of the common boards.
• Portable tester bundles.
  • System 11 is $100.
  • WPC is $110.
  • System 11 + WPC is $150. Includes only one of each of the common boards.

These boards are complete and just need some additional verification for confidence.

• WPC-TO1-XMT = WPC Ball Trough Opto Type 1 Transmitter. Compatible with wide bodies (IJ/STTNG/similar).
• WPC-TO1-RCV = WPC Ball Trough Opto Type 1 Receiver. Compatible with wide bodies (IJ/STTNG/similar).
• WPC-TO2-XMT = WPC Ball Trough Opto Type 2 Transmitter. Compatible with all other ball troughs.
• WPC-TO2-RCV = WPC Ball Trough Opto Type 2 Receiver. Compatible with all other ball troughs.
• WPC-OPT-XMT = WPC Opto Transmitter. The small green board.
• WPC-OPT-RCV = WPC Opto Receiver. The small blue board.
• WPC-MTR-EMI = WPC Motor EMI with or without brake. This is A-15340 or A-15542.
• W89-WHO-M1T = WPC-89 Doctor Who Mini-playfield opto transmitter - type 1. True to original. This is A-15432.
• W89-WHO-M1R = WPC-89 Doctor Who Mini-playfield opto receiver - type 1. True to original. This is A-15431.
• W89-WHO-M2T = WPC-89 Doctor Who Mini-playfield opto transmitter - type 2. Has header as well as solder pads.
• W89-WHO-M2R = WPC-89 Doctor Who Mini-playfield opto receiver - type 2. Has header as well as solder pads.
• W89-DMN-CCO = WPC-89 Demolition Man Cryoclaw Opto. This is A-16986.
• W89-DMN-ELO = WPC-89 Demolition Man Evelator Opto. This is A-17596.
• W89-CRV-TEH = WPC-89 Corvette Track Encoder (Horizontal). This is A-19141.
• W89-CRV-TEV = WPC-89 Corvette Track Encoder (Vertical). This is A-19141.
• W89-CRV-TLH = WPC-89 Corvette Track Limit (Horizontal). This is A-18821.

These boards are in development. They have either been built and exhibit problems, await building or are under revision.

• SYS-011-PWR = System 11 Power Supply.
• SYS-3T7-UCD = Unified System 3-7 CPU/Driver.
• DEC-S03-DMC = Data East Dot Matrix Controller.
• DEC-SND-002 = Data East Sound (520-5002-03).
• WPC-BDG-DRV = WPC Bridge Driver (A-15946).

These boards are planned but the future is unwritten.

• (none)

<edit close> = original post follows.

The background is that I used some hillbilly engineering to make my own bench test rigs for initially WPC-89 and then System 11 and as yet WPC-95. I built some custom prototype boards to serve the purpose of testing on the bench but those boards took me about a few weeks to lay out (slowly in front of the TV) and then about a week to build (manually routing and bending wires, etc). This doesn't scale to building more test rigs (not that there's demand for that but when I got to building the WPC-95 one I didn't want to spend the time to build another prototype board). Instead I've spent about two months learning something new - more below. One week versus two months. Not very efficient.

I'm not sure if there's a way to inline embed pictures so I'm just going to stick to uploading the pictures at the end of the post.

Having said all of that ... away we go.

The first two pictures show the prototype boards I built for the bench test rig. Lots of meticulous wire bending, routing and cutting. There was no schematic for these boards. I did the layout in notepad (a standard and simple text editor). Error correction took a long time.

The third picture shows a bunch of small boards I had made to "get my feet wet". The ones on the left are general illumination testers. Two versions of a similar concept. With these boards and connectors you can go up to a machine and plug them in and instantly exclude the board or the playfield wiring for either J120 or J121 (as well as J119). The ones on the right are solenoid savers (I know barakandl makes these). I didn't make these to compete. I made these for myself and to make sure the fuse holders are correct. The boards in the middle are a reproduction of the relay boards in System 11. I've had a few of these burned out and wanted to start with something simple.

The fourth picture shows the "professionally" designed test boards. One of the things I realized doing this is that the silkscreen is the best part. It allows the designer to put whatever notes they want. In the case of the solenoid tester I put the drive transistor on it so I don't have to bother consulting the manual and trying to find it when I'm testing the board on the bench.

At some stage in the future I will get around to documenting the hillbilly engineered bench test rigs in a separate thread. There's been almost no demand for any information on this.

boards_001.jpgboards_002.jpgboards_003.jpgboards_004.jpg

And then I went a little crazy.

The first two pictures show a reproduction System 11 Auxiliary Power Driver. I wanted to fix the diode issue (errant flashers with the flipper power stroke). I couldn't help myself with creeping featuritis and added a bunch of LEDs for diagnostic purposes as well as test points. Finally I converted the bridge rectifiers to discrete diodes. It was extremely satisfying to design, have fabricated and populate the board. The best part was putting it in a machine and having it work the first time with no revisions. In hindsight this board is not a bad choice because it's almost exclusively power and has no logic. It was however the second of the reproduction boards I had worked on.

The third picture shows the first reproduction board I worked on. I chose this board for a few reasons. Every one of these boards I've worked on is a right royal P-I-T-A. The pads on this board lift so easily and there's nothing like the dreaded "Sound Board Interface Error" which I've had to deal with more times than I have enjoyed (read any amount more than one is too much). I actually have someone's board now that has this and I wanted a backup board in case I wrecked the old board. Another reason I chose this board is that it has logic and wanted to see how that worked - in terms of design and layout. The other final reason is that I don't like the original surface mounting of the PLCC ADSP-2105 so I replaced the SMD pads with a THT socket. I tested the digital side of that board on my bench and it works but I'd like to test the analog side although I need to finish the amplifier, heatsinks and capacitors to do that.

I had both of these boards made in red because I actually think red looks cool although I know Williams used red for prototype boards and these actually are prototypes.

What's next? Who knows?

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S11_AUX_WORKING (resized).JPG

boards_006 (resized).jpg

Finally ... I did explain in a different thread with respect to the System 11 Auxiliary Power Driver that I am not in the business of making and selling reproduction boards. I'd be happy to sell anyone interested a blank board with the BOM but I am really not interested in anything more than that. I don't want to rob people of the thrill of building and putting the board in the machine and seeing it work.

As of the time of posting I have a few people interested in the System 11 Auxiliary Power Driver (from the other thread) and I'd like to wait a while before having more of them made to be able to send out to people. That's where the "have a little patience" comes in. I intend to have them made in green unless there's overwhelming demand for a different color.

I'm not very good at tracking multiple things (I always tell everyone I know that I'm not good at multi-tasking). If you've requested something and I don't reply (in a reasonable amount of time - have a little patience) then I don't mind being reminded. I will tell you if you've overstayed your welcome.

Me? I have a degree in medical sciences but spent almost 20 years in the software industry progressively heading closer to the software/hardware interface. Near the end of it I (re-)discovered pinball and since then have gone further toward the hardware side (even though I have no formal training in either software nor hardware).

I love learning new things and having spent a lot of time fixing broken and (alkaline) damaged boards I thought that it would be interesting to make new ones instead of fixing old ones. The board below (thanks to ForceFlow who will probably recognize it) I originally wanted a challenge to try to fix but instead of fixing it I thought reproducing it would be a better solution.

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It's been over a month since the last post. It's been a busy time with Northwest Pinball and Arcade Show preparation as well as attendance and contribution. After the show I picked up some boards I was asked to repair and just finished dispatching them. I had been wanting to get back to diagnosing the most recent board I am working on and only just found the time to work through the issues. More below. I will try and not ramble as I'm known to ramble.

Updates:

- I still need to build BOM lists for people. Some of the boards are fairly simple and experienced people could work them out if the board is desired more quickly than I can provide the information.

- For those interested in test boards the current system will be available but I also tried a new system at the show that is better suited to field diagnosis and testing. They are currently a work in progress. I will provide more information when I return to the system.

- The System 11 Auxiliary Power Board I built spent the weekend at the show in my buddy's Mousin' Around and it worked fine all weekend with the usual show hammering. I have the BOM list for this ready but want to fill in potential merchants in some of the fields.

- Finally the latest board that has been giving some grief is shown in the pictures. I just got it booting last night and put it on the bench this evening. Seems to be working at the basic level. The design has daughter boards and I need to verify the diagnostic daughter board as well as the audio subsystem (both DAC and amplifier). I have to figure out how I'm going to do that on the bench so there will be a delay.

Apologies for my slow progress. Life happens.

S11_AUX_SURVIVED_WEEKEND (resized).JPG

boards_008 (resized).jpg

IMG_2627 (resized).JPG

So the new System 11 board set is all working (with appropriate corrections). Most of the revision 00 boards have issues. Most are minor but one is severe enough that traces must be cut and re-routed so the board set is not available until these are fixed.

Here is a list of what are the modifications from the stock Williams System 11 board(s).

- Modified mounting holes to "keyhole" style mounting holes.
- Removed reset section and replaced with reset generator (supervisor).
- Removed batteries and replaced with connector (optional installation if desired).
- Modified some jumpers to be 0.100" pin headers (allows quick/easy change for memory size).
- Added test points for +12V and -12V (in addition to already present +5V and GND).
- Added high frequency filter capacitors to restore functionality for NLA OEM SRC parts.
- Added optional installation points for lamp matrix MOSFET modification.
- Moved some of the sound circuit to daughter boards.
- Added daughter board connection for diagnostic digit display (System 11 - only).
- Added daughter board for sound circuit amplifier (System 11 -/A only).
- Added daughter board for sound circuit digital analog conversion (System 11 -/A/B only).
- Added optional RJ-45 modular 8P8C connectors for in-machine solenoid diagnostics (additional diagnostic boards required).

With these boards I also recommend a special solenoid fuse board. Pinball Electronics (barakandl) sells these and while I have had this board made I do not want to step on his toes so I recommend his board. It'll also be cheaper than mine because his board uses fuse clips whereas my board uses fuse holders and fuse holders are not cheap (typically $1 each).

Pictures below show old and new (blank and populated) and the new board set (main board and daughter boards). I need to correct the problems and build a revised board to verify everything works before these can be made available. One nice thing about the amplifier being separate from the main board is that a board for a more readily available amplifier can be made (I did this with a TDA2030AL as a test and while it works it doesn't work the same as a TDA2002). I'm either going to have to do more reading or get some help on this as I'm no electronics (particularly analog) expert.

If you have a tired, old or damaged board this board set is a great option for you. It uses 100% original components so there's no "emulation" of the CVSD. It *IS* the Harris 55536 CVSD that is being used.

boards_007.jpg

boards_008.jpg

boards_009.jpg

If you're interested either post (which you just did) or PM. I have kept a list of people interested but I'm not super fast at doing things so please bring some patience. I'm doing this for fun, learning and to help keep machines going. Projects with no boards ... no problem. I'll just make the board!

I don't have any System 9 machines but I do have a friend who has a friend who has one (Comet). I have that board with me at the moment. The boards are very similar but I need to figure out the display (it looks like it's BCD from the CPU and decoded by the driver to the display). I'll get around to this one (in the list) but I have a few other boards I want to get done first. The next is another sound board for a friend who has a machine that is missing that board.

Yes. I started this thread due to a response in the other thread because what we're discussing in this thread is generic and not System 11 Auxiliary Power Board specific. These boards are done and I think I have a reasonable way of communicating the BOM. I wanted to get some more merchants but it's just taking more time than I'd like to fill in those fields. That's time not spent doing more on this stuff.

Before making these available I'm going to have two local friends work through building the board so at least someone other than me has built a board. I do intend to provide support for building the board.

Not yet.

Yes. Me too! My problem is that I have so many ideas for boards that I want to get done it's actually more interesting to work on the new thing than to try to make sure all the loose ends on the last item(s) are cleared so they are ready for distribution. I'm trying to temper that with a satisfactory level of completion before moving on to the next thing.

Thanks. I'm excited about doing new stuff and helping keep people's machines running!

The pictures don't provide a lot of close detail. I apologize. I don't like super high resolution detail pictures as they kind of clog up the download of the thread.

The System 11 board set consists of:

- Main CPU board containing the generic base board for System 11C. No sound components are required. The sound section is silk-screened so it shows what components do not need to be populated.

- DAC (digital analog conversion) daughter board. This board contains the circuitry required for the DA, CVSD and associated amplifiers.

- Amplifier daughter board. This board contains the circuitry required for the final signal amplifier. There are two shown above but only one is necessary. The other is a test.

- DDD (diagnostic digit display) daughter board. This board contains the original digit display for System 11.

The daughter boards are connected to the main board with pin connectors. To match the original System 11 board revisions:

System 11 needs all four boards (main+DAC+amplifier+DDD) - TESTED on my bench.
System 11A needs three boards (main+DAC+amplifier) - although I don't have any actual experience with System 11A.
System 11B needs two boards (main+DAC) - TESTED on my bench.
System 11C needs one board (main) - TESTED on my bench.

In the initial revision above the main (with a single minor correction), amplifier and DDD boards work but the DAC board has problems that require reasonable surgery that I don't expect people to perform so I need to revise them.

You beat me to my post. I was typing it all up and you posted. Please see above.

Sorry. I went to visit family for 5 weeks and now they're paying it back by visiting me for 6 weeks.

I've got the corrections to the DAC board applied but I re-adjusted some of the positions on the CPU board rendering the bad DAC boards incompatible (even after manual application of corrections). I had the original configuration manufactured with corrections and just received those boards so I haven't tested them. Those DAC boards should allow me to use the remaining 4 CPU boards for revisions of System 11 other than C.

I've got other things in the pipe but with the family visiting I won't be able to make much if any progress on these until they're gone. I will not be able to populate and test but I will be able to lay out other new boards and put them in the manufacturing queue.

Family comes first.

Here's an update for those following along at home. Thanks to everyone for their patience. I'm a one man show and find myself a little on the busy side.

My plan is to get all the boards I have in the pipeline working correctly before even contemplating releasing them for any other person's consumption. Those who know me know that my quality bar is high. The problem I have is that I'm excited to move to the next board often at the expense of figuring out problems with previous boards (everyone likes the new shiny thing - right?).

This next set of boards has dual purpose. Bench testing boards that double for use in real machines and two reproduction boards - one for a friend who needs the board and one for the fun of it.

Pictures are below the descriptions.

1) Panel alphanumeric display boards. These are slave boards. There is no logic on them. A double alphanumeric panel that supports later Data East (e.g. Phantom of the Opera), later System 11B and System 11C (e.g. Whirlwind) and alphanumeric WPC-89 (e.g. Funhouse). It should also support early Data East (e.g. Secret Service) and System 11A (e.g. Swords of Fury) but I have not checked the layout. The RJ-45 jacks and lower bank of small digit displays are for bench testing (support for the jackpot displays on Taxi, Police Force and Riverboat Gambler). SIP sockets are installed only for verification and testing purposes.

2) Discrete alphanumeric / numeric display boards. These are slave boards. There is no logic on them. This is to support games that use discrete displays and a status (match / credit) display (e.g. High Speed). It should also support Data East Laser War.

3) Display logic boards. These are master boards. They contain the logic. There is logic support for all the above mentioned games. I also have a master board that supports System 6, 6A, 7 and 9 but don't have any experience with those systems nor do I currently have a bench setup to test anything. I'll be working on those but with a much lower priority. The System 6-9 master board is for bench use only. It was not designed for use in a real machine.

4) System 11B interconnect boards. This board has keyhole support for easy mounting and removal. The current limiting flasher resistors vary per game. There is an option to directly install the resistors for a specific game onto the main board or to use a daughter-board so that a main board can be swapped between games by simply swapping the resistor daughter-board. This is possible because the flasher resistors are electrically isolated.

5) WPC-89 sound board. My buddy needs one. They sometimes appear on Pinside or eBay but there's something about a brand new board. This board also supports easy switching between early boards (pre-fliptronic machines) and later boards (fliptronic machines). There is a resistor difference between the boards. Pinwiki does not document this but Clay's guide does.

I am currently working through populating and testing these boards (remember ... I am a one man show that does everything from design, parts acquisition to populating and testing). The alphanumeric LEDs arrived today so I will be trying to put the System 11B display boards on the bench and find out if they work.

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