bungy
Well-known member
Shit. The auction ended while I was testing. No change after reseating the chips.
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Please post all monitor technical topics in the Technical - Videogames - Monitors section, not in the General Help section.
Upright DOT - Squawk & Talk
- Thread starter bungy
- Start date
bungy
Well-known member
Actually, I found these:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=280484905438
I think I'll try them out.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=280484905438
I think I'll try them out.
tester007
Well-known member
that will work.. what happens if you swap the pia's with eachother?
bungy
Well-known member
Swapped the PIAs and nothing changed.
I know I tend to point out the simple stuff that you already know...so here' goes. Are you 100% certain the pin-outs on the SSIO are correct? It sounds like your board works, but the SSIO isn't telling the Squawk & Talk when to squawk.
SSIO - J5 Pins 10-14 are all connected correctly?
SSIO - J5 Pins 10-14 are all connected correctly?
bungy
Well-known member
I have it memorized:
J5-8 to J5-9 (jumpered for EDOT mode)
J5-10 to J1-1
J5-11 to J1-2
J5-12 to J1-3
J5-13 to J1-4
+5 to J1-5
GND to J1-6
J5-14 to J1-8
-5 to J1-9
GND to J1-14
J2-4 to J2-5 (jumpered for max volume)
J2-9 to SSIO R209
J2-10 to SSIO R221
I have checked & double-checked making sure there are no shorts. Everything seems in order with the wiring.
At this point the theory is that S&T is getting the right signals, it just isn't doing the right thing with them. My next step right now is to wait for the new PIA chips and try them out.
tester007
Well-known member
The pia acts as a serial interface to the ssio board. So it makes sense (hopefully) that if one was bad, the s&t would work in test, but not ingame.
When you swapped the pia's, did you try the test mode on the s&t to see if it still cycled the sounds. How many led flashes do you get after?
When you swapped the pia's, did you try the test mode on the s&t to see if it still cycled the sounds. How many led flashes do you get after?
bungy
Well-known member
Yes, the test button still worked and I got 5 flashes
tester007
Well-known member
is that the 1 quick flash, then 5 flashes?
bungy
Well-known member
No, 1 quick and then 4. The last 4 aren't evenly spaced though, I think the third one is quicker if that makes any difference.
bungy
Well-known member
I got the new 6821 chips in and when I installed them, nothing changed. I got the 5 flashes and the test button worked, but no voices from the game in test mode.
I'm beginning to suspect my DOT board, but I'm still going to get the S&T board checked out.
I just noticed the new chips say MC68B21P on them and the old ones say MC6821P. Is there a difference? Did I get the wrong chips?
I'm beginning to suspect my DOT board, but I'm still going to get the S&T board checked out.
I just noticed the new chips say MC68B21P on them and the old ones say MC6821P. Is there a difference? Did I get the wrong chips?
tester007
Well-known member
Not sure if its different. Read the bottom of this. You should still be getting another flash.
http://marvin3m.com/bally/squawk.htm
maybe check the sockets.. I always change them out on bally/midway stuff as they used the worst ones.
http://marvin3m.com/bally/squawk.htm
maybe check the sockets.. I always change them out on bally/midway stuff as they used the worst ones.
Is everything on your SSIO, to the left of the pins where the S&T connects, filled in?
I think in addition to the caps I had to buy and install the S.I.P. there. So you should have that entire row of resistors, the row of caps and the SIP all there.
I think in addition to the caps I had to buy and install the S.I.P. there. So you should have that entire row of resistors, the row of caps and the SIP all there.
rcoonjr
Member
- Joined
- Mar 3, 2010
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Ditto that.. I got a Pinball version of the S&T.. I'm comparing schematics to figure out ... what is the difference. Other than there are no Pots on the board, and the pin array... But anything can be reverse engineered.
I think I need to get my video glitch fixed first..
clay_cowgill
Member
Sorry if this is obvious, but I couldn't tell from your first post-- did you replace the program ROMs on the DOT board with the EDOT version? (The UDOT ROMs don't send the commands to the Speech board otherwise...)
-Clay
tester007
Well-known member
His S&T was not passing the boot test so that needs to be solved before looking at the ssio.
Clay, I have UDOT roms in mine and it works fine. Its been a while since I hooked this up but I seem to recall the only dif was a jumper on the board that put it into Edot mode. I had a second machine (i'm going off an old memory here) that had Edot roms in it that caused the machine to only function as one player by pressing player 2 button. I believe Edot roms only worked in an Edot, but the Udot roms could work both ways.
Clay, I have UDOT roms in mine and it works fine. Its been a while since I hooked this up but I seem to recall the only dif was a jumper on the board that put it into Edot mode. I had a second machine (i'm going off an old memory here) that had Edot roms in it that caused the machine to only function as one player by pressing player 2 button. I believe Edot roms only worked in an Edot, but the Udot roms could work both ways.
ThisOldGame
Well-known member
interresting Id like to look at this possibilty alittle more after CAX
for a new sound board enhancemnt for the uprights that might be alot easier.
After interviewing Steve from Encom he mentioned they had developed
and installed a new sound/speech board in the Video Pinball 2.0
I bet with alittle hacking this could be adpated to work with the DOTs.
http://forums.arcade-museum.com/showthread.php?t=140288
for a new sound board enhancemnt for the uprights that might be alot easier.
After interviewing Steve from Encom he mentioned they had developed
and installed a new sound/speech board in the Video Pinball 2.0
I bet with alittle hacking this could be adpated to work with the DOTs.
http://forums.arcade-museum.com/showthread.php?t=140288
Well, my S&T board has "left Canada" and is on its way to my house as I type. Don't know how long it will take, but hopefully by next week I can start making a mess of it all. It was supposedly tested and has the burned ROMs. I also have a new switcher and adapter that came in the mail yesterday, so I should be good to go!
clay_cowgill
Member
Maybe I'm reading the thread wrong, but I thought I saw that he was getting four flashes at one point? According to this, that can be correct for EDOT S+T:
http://girasoli.org/arcade/?p=203
"When powered on, after the diagnostic LED's initial flash on the EDOT S&T, the LED will flash 4 times instead of 5. (The article states the diagnostic LED should flash 5 times after the initial first flash).
That last difference (#3) had my noodle cooked as I was expecting the LED to flash five times (after the initial flash)."
Could be-- I'm monkeying around in the code, so I might have broken something. But you are correct in that EDOT code is 1-player only. The SSIO EPROMs are definitely different code between UDOT and EDOT, so maybe there's some combination there that can be right or wrong... (Not sure if the differences have anything to do with S+T behavior or not.)
There's a 74LS273 at location A3 on the SSIO, if that's not working, then the S+T isn't going to get the command to play a sound. An SSIO board swap might be educational if he has a spare...
-Clay
bungy
Well-known member
Clay, thanks for the reply. I don't know the status of the ROMS on my SSIO. I'll get the checksums to be sure.
I do have other SSIO boards, but they're of the E000 revision. Not sure if that makes a difference, but I'll try it anyway.
I do have other SSIO boards, but they're of the E000 revision. Not sure if that makes a difference, but I'll try it anyway.
