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What tec is this?


Louie Bee
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9 hours ago, CanonMan said:

It's PCL Maxi.

Thanks Bud.

 

Looking at the circuit diagrams it has 2708 roms & 24 pins

PCL_Maxi.jpg.9d8fd5c20778b4c3f95c0fa365612173.jpg

 

Here is a PCL Maxi I worked earlier...

 

IMG_20200724_191851913.thumb.jpg.cbfe0f01d43879c05f19b2e570cc040f.jpg

 

IMG_20200724_123402373.thumb.jpg.dc6c056784a2913a59cdb87a0a0b804f.jpg

IMG_20200724_123347336.thumb.jpg.780a57ef715f02de1991da31a4ff341e.jpg

IMG_20200724_122918094.thumb.jpg.90d83173d8afb45ebfa91a285a715e8b.jpg

 

Thanks for the input @CanonMan.

 

I'd suspect PCL MAXI came before MMM

 

 

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9 hours ago, Zippy said:

Think JPM sys80/83/85, tbh it also sounds like Supatrack/Money Belt, going by 9 letters and fill for feature.

Thanks for the input. System 80 is JPM & System 83/85 I think are Bellfruit. This is from a Maygay

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6 hours ago, hitthesix said:

Clone of quickshot, on proconn tech,

Thanks also HT6,

It's not Procon Plus, PC90 or PC92 as they all have a stack of PIOs

Pc90 board

IMG_20210918_104606525_HDR.thumb.jpg.4791e06186614b3b045ef01883cb5e3e.jpg

 

Procon plus

IMG_20210918_104708622_HDR.thumb.jpg.63de16748b6cb5059a8072af5e1e7077.jpg

Edited by Louie Bee
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2 hours ago, Louie Bee said:

Thanks for the input. System 80 is JPM & System 83/85 I think are Bellfruit. This is from a Maygay

I haven't a clue why I put that unless it was the booze talking

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45 minutes ago, CanonMan said:

The Maxi board in Link3 doesn't look the same as the one in Money Drop. Maybe there's another variation that I haven't seen before. 

The Link 3 will be an early version of PCL maxi along with this 1982 Emperor club (MPU pic) which has the same board. Because the Money Drop is on £4 payout has to be at least an 87 game so expect by then the the board was more compact.

Emperor club Maygay pcl maxi.JPG

Emperor club back view.JPG

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Thanks Ron . The back door has 86 but game name don't match, hence my confusion. The Levi paid sticker in the cab also says m/catcher.

 

Is mmm (triple M) and PCL maxi the same Tec? Most of the chip layout is the same as mmm

 

IMG_20210918_105811830.thumb.jpg.fe340f2aa5b1bacea699cc9346695987.jpg

 

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6 hours ago, Louie Bee said:

Thanks Bud.

 

Looking at the circuit diagrams it has 2708 roms & 24 pins

PCL_Maxi.jpg.9d8fd5c20778b4c3f95c0fa365612173.jpg

 

Here is a PCL Maxi I worked earlier...

 

IMG_20200724_191851913.thumb.jpg.cbfe0f01d43879c05f19b2e570cc040f.jpg

 

IMG_20200724_123402373.thumb.jpg.dc6c056784a2913a59cdb87a0a0b804f.jpg

IMG_20200724_123347336.thumb.jpg.780a57ef715f02de1991da31a4ff341e.jpg

IMG_20200724_122918094.thumb.jpg.90d83173d8afb45ebfa91a285a715e8b.jpg

 

Thanks for the input @CanonMan.

 

I'd suspect PCL MAXI came before MMM

 

 

So that's what it looks like, many thanks for the image mate

pook and i were trying to get this to run a while back

and i think chris had fixed 1 of the roms for it to run, but !!

for the life of me i can't get it to budge on mmm tech

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1 hour ago, hitthesix said:

So that's what it looks like, many thanks for the image mate

pook and i were trying to get this to run a while back

and i think chris had fixed 1 of the roms for it to run, but !!

for the life of me i can't get it to budge on mmm tech

The board has a switch for 2732 or 2764. My rips were from 2764 but perhaps if you split the ROMs in half they may run as 2732?

 

Worth a shot bud

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These do run (sometimes) in the machine.

 

But I can't for the life of me get it running today. Blows the 15V line fuse if you touch it with the oscilloscope

Edited by Louie Bee
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When I first glanced at the pic I thought, oh yes, MMM but it isn't. Not seen that one before but it looks like it shares most of the MMM layout. It doesn't look the same as the MAXI either? The first major difference I noted was the RAM. In the MMM it's 2x18w chips whereas this one is a 6116.

947630751_P1030378(Custom).JPG.e6a831151f1637c0c973e27cea0cf425.JPG

If it blows the 15v fuse you must have something amiss with your scope?? Or do you mean when you connect the ground of the scope?

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Hi Bob  It had 5517 ram. I just used the 6116 as a sub as I know it's fast enough for pc90. also has 4 extra pins on the rom sockets to accommodate 2764.

 

Most other chips are the same I think.

 

The Cro won't work on some boards without ground but is fine on all JPM boards without ground. All procon boards need grounding so nothing unusual.

If I ground it and probe CPU pin 1  fuse gone. Same with any other pin probe.  If I put the Cro ground onto ROM pin 1 the machine starts flipped out with all sorts of things making noise. 

Will have a look on another machine to see if it's Cro gone bad. Gone through quite a few 1.6A fuses today.

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On 9/18/2021 at 1:20 AM, CanonMan said:

It's PCL Maxi.

Oh no it isn't!

Now I've had a proper look at it, it can't be Maxi as that uses a SC/MP CPU rather than a Z80.

The mystery board has a Z80 CPU and no PIO chips so it must be MMM, probably a later version as it has a single 6116 RAM chip instead of the two 5101's on the early version.

Procon was the first to feature a row of PIO chips along the middle of the board.

 

Maygay PCL MMM Manual.pdf Maygay PCL Maxi Manual.pdf Maygay PCL Procon Manual.pdf

Edited by CanonMan
typo
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20 hours ago, Louie Bee said:

The Cro won't work on some boards without ground but is fine on all JPM boards without ground. All procon boards need grounding so nothing unusual.

If I ground it and probe CPU pin 1  fuse gone. Same with any other pin probe.  If I put the Cro ground onto ROM pin 1 the machine starts flipped out with all sorts of things making noise. 

Will have a look on another machine to see if it's Cro gone bad. Gone through quite a few 1.6A fuses today.

The scope should have a very high impedence input to ground! The only thing you might need to look out for is there are two grounds one for the high level supply and the other for the low level. I can't remember if they are joined back at the PSU? When I was faulting the MMM I used the -ve of the big smoothing cap for the ground connection. I would have thought putting the scope ground on anything but ground would drive it potty/blow fuses/plumes of magic smoke whatever! Not something I would do.

I've found most issues in these boards are caused by rotten components in the battery area, much like any other tech really. I think it's all in my workshop threads a way back.

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On 9/18/2021 at 5:09 PM, hitthesix said:

So that's what it looks like, many thanks for the image mate

pook and i were trying to get this to run a while back

and i think chris had fixed 1 of the roms for it to run, but !!

for the life of me i can't get it to budge on mmm tech

I was talking about   link3 game, i should read posts, properly 

as it is running on plc maxi, no wonder i couldn't get it to budge

money drop doesn't want to play ball

Untitled.jpg

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