Harrisburg, PA
If it's not too late, I would love to get in on your WMS 3-7 bench display. We end up repairing a fair amount of 3-7 boards on the bench. We do a lot of 9-11Cs too.
Jim
(Topic ID: 199162)
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1 week later
Quoted from HHaase:Ok. Current revision PCB on the bench displays looks good. A couple tweaks are still needed to make it easier to build but nothing that would have any effect from a customer standpoint.
So I'm going to release the bench displays for low-rate initial production, I'll probably have 8-10 pieces from this first early run available to sell.
This first few pieces won't have exactly the same layout/parts as the regular production pieces, so they'll be at a discounted price. I still need to work out instructions and harnesses, but I'll have that done by Monday, to start shipping out Tuesday.
http://www.siegecraft.us/presta/index.php?id_product=64&controller=product&id_lang=1
-Hans
How do you add this to a cart, and will you take PP for it?
Thanks,
Jim
1 week later
Quoted from HHaase:Well, shoot, I forgot that System 9's header were a different layout.
Probably confusing the display with odd signals.
For System 9.....
The BCD connector should go on 1J3 pins 1-9
The Strobe connector should go on connector 1J2
-Hans
So, you don't want strobe 1 (IJ1-9) for System 9? I had BCD connected to IJ3 and strobe to IJ1, and the results I saw were in my previous post.
Jim
Quoted from HHaase:Well, shoot, I forgot that System 9's header were a different layout.
Probably confusing the display with odd signals.
For System 9.....
The BCD connector should go on 1J3 pins 1-9
The Strobe connector should go on connector 1J2
-Hans
Pic of it connected, and a video of each, your old 7-digit LED display (P1 and status) and the new OLED display. The OLED is connected to the BCD data on 1J3, (the open 3 pins are for commas on P1, P2 And P3, P4 and /blanking) and display strobe 1 (pin 9 of 1J1).
https://photos.app.goo.gl/rCahbWXOFynoeKz02
Jim
Quoted from HHaase:That is damn peculiar for sure. Not sure where my old header info came from, it was in my notes from a few years ago, and been a while since I've had a system 9 board here in person. You've definitely got it hooked up right.
How are you powering the tester? If you don't have good ground continuity between them the inputs float and give all sorts of nonsense data. IIRC the analog ground for the sound portion of system 9 boards is somewhat isolated from the digital ground.
It's powered by the alligator clips attached to a bypass capacitor on the same board.
Jim
Quoted from HHaase:That system 9 issue has me perplexed. Any chance you've got a logic analyzer or oscilliscope? I know you probably don't, but I'd be interested to know the timing on strobe 1 and on your blanking line.
Next batch is looking like right around thanksgiving availability. Bare boards are arriving today, just waiting on shipment info for the OLED's, and then I'll order the other parts too.
-Hasns
I have a scope, but what does the blanking have to do with this? The blanking is a signal that is not even connected to this OLED display board. Plus, the blanking is either high or low, unless you want the signal that originates off of pin 4 on the display PIA, before it becomes the blanking signal.
Jim
2 weeks later
Quoted from vid1900:Can anyone else repeat those results on another sys9?
Similar results when hooked up to a Rottendog 3-7 combo board. Question marks when in audit mode, and not the expected numbers when in attract mode for Flash. It should alternate between 000000 on P1 and the high score of 500000 or 550000 (I can't recall the default HSTD ATM).
https://photos.app.goo.gl/EsOHMvYE8JJIXoFx2
I'm going to try this with a stock WMS power supply, if I get the chance this weekend. This is on the bench with an AT power supply.
I'll also comment regarding the crimp connections on the display outputs of any of the boards tested. The tangs on these crimp connectors tend to exit the .156" 9-pin housing. Not certain what brand they are, but judging by the look of them, they are not Molex brand.
The 2 pin .100" housing likes to pull off of the header for the power of the OLED a lot. I would try a different connector there. A 3-pin or 4-pin .156" friction lock header with a complimentary ramped housing would work well.
Jim
Quoted from HHaase:Makes perfect sense, and that's what I figured. Looking at the System 9 schematics they moved to a 4mhz oscillator in place of the earlier 3.58mhz crystal. This would potentially alter the interrupt timing enough that my display would be out of sync, and I wonder if Rottendog did the same.
I looked at the crystal yesterday, and could not discern what speed it was set to run at (it is a little square, 4-legged unit). I'll have to look up the part number to see what it is.
Jim
Quoted from HHaase:The housings were among the LAST Keltron brand stock that I had on hand. I ran out of those about 2-3 weeks ago, and everything going forward is both Molex brand housings and Molex brand crimps now.
The latest version of the boards has moved to a .156 sized power header as well. I haven't been using locking tabs though. Easy enough to change if it proves to be an issue with the .156's, but I'd prefer to keep without the locking ramp as I have a lot of leftovers from the aux LED adapters as I build those.
If you look at the data on the attract mode, the 550,000 does show up there, but it blinks so stinking fast you can't see it. Looking at things more closely, it looks like I ended up with an incorrect resonator. Should have a 16mhz part and I've been building with an 8mhz. I'm going to follow up with my programmer to see what may be causing the issue with the bad data, should be possible to do a simple code update if that's the issue. Hopefully I don't have to start swapping resonators but I will if I have to.
Step 1 here is going to be making sure I have the problem fixed properly, step 2 will be to get it out to you guys.
Edit:
Here's an oddball question. Since Rottendog doesn't publish a schematic for their board, I assume it's still using a 6808/6802 processor? Is the crystal marked for what speed it is?
It's actually displaying 555000, which is incorrect. Also, it lags on the time that it shows the HSTD. IT shows it really fast, then shows nothing but zeros for about 3-5 seconds with no sign of the HSTD. The HSTD does eventually come back. In other words, it's wonky, and not as a typical plasma or LED set up would display.
Jim
1 month later
Quoted from HHaase:Shoot me a pm so I can get you a return label. Need your address and phone number.
PM sent
Thanks,
Jim
2 months later
FWIW, here are some vids of the LCD hooked up to a Sys11 board with bowler ROMs installed. Until Sys11 games are supported, this may be a dirty alternative to testing Sys11 MPUs.
https://photos.app.goo.gl/jeXg9yhkwMCI1XoE3
Jim
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