PCB Testing And Repair On An Exidy MOUSETRAP Arcade Machine - They Don't Make Them Like This Anymore

[@markjackson1444]

The mouse is really starting to sweat now. … You’ve almost got it Ronnie.

[@dkd1228]

Love that spooky interlude!

[@naytch2003]

Another pleasant valley Sunday people 😄

[@michaelturner4457]

My favourite Exidy game is Chiller.

[@benaggus]

I didn’t watch the previous video because I thought you were fixing an electronic mousetrap. This makes more sense now.

[@irieman442]

I used to go to our local Spaceport arcade a lot. I would walk into the smoke filled place and hear all of the machines running at once. I was in heaven. Now I get annoyed watching a youtube video that has a machine making the same repetitive noises for a couple minutes. I bet the people that worked at the arcade probably went insane! Now, Get the hell off my lawn! Can't wait to see the gameplay video.

[@tgfcujhb7583]

Looks like WOW with different characters....😁👍👍👍

[@tango_doggy]

The sound line names on the schematic are amazing

[@noahboat580]

Never have i seen mouse trap turn into any video game, let alone a pac man competitor from an obscure arcade company. Cool stuff!

[@ginkumpow3726]

Knowing what something does isn't as important as recognizing what it's failure looks like.

[@AlexZander688]

I always have to play this game with hands crossed. I need joystick on the left and buttons on the right.

[@JamesUK-je4ew]

Loved the return of the “spoke too soon” sound at 22:22. 😃not heard him for a while! Great job and keep up the good work. Yours and Donnies videos are the highlight of my week. Regards James “Poundtown” W

[@scottgm321]

“I’ve always been crazy, but it’s kept me from going insane.” Waylon

[@NivagSwerdna]

Your a master of the logic probe; nice job.

[@telemedic5142]

Well diagnosed! Another interesting video!

[@oldguy9051]

5:07 The 6532 (B7) isn't a microprocessor but a so-called "RIOT" chip. Like with the ubiquitous PIAs the name is an acronym of its functions: RAM-Input-Output-Timer It's RAM is only 128 bytes "large" but that was enough for its best-known usage case: the Atari 2600 "VCS" console The CPU controlling the RIOT on the Mousetrap sound board is down to the left of the schematic: a common 6502 (B4) (so Mousetrap uses three CPUs: the main 6502A and the 6502 + Z80 on this sound board) As the main 6502A apparently runs the diagnostics properly and the digitized sounds get repeated over and over (generated by the Z80, its ROMs and the MC3417) I'd check the 6502 control section of the soundboard first. I'm not sure where to look at first, though (except checking clock and reset lines of the 6502), as I can think of several possible reasons (ROMs bad, addressing TTL logic defective, CPU or RIOT dead).

[@tango_doggy]

I like the movie maker effect

[@jetlaw_1]

I have never heard of this game (or the manufacturer for that matter), but I think it's really cool. Any arcade game with a "dog button" is okay in my book!

[@ovalteen4404]

They never produced any mega-titles, but if you've heard of Venture it's another of their best.

[@thornmountain8129]

Good old Exidy arcade systems, it would be cool if you could get one of those rare Chiller arcades from Exidy.

[@robdimambro1674]

Sounds like it's kicking off at the pet store :O

[@pauz2175]

Great work Amigo! Keep it up!

[@Ren_G.]

Great work so far!

[@jasonsteverson4609]

Hey Ron!!

[@LyonsArcade]

Hey Jason

[@angrydove4067]

Looks like Pacman and Wizard of Wor had a baby.

[@Bob-sd7qr]

Ron, another great video! Wish you were here to help me with all my games. The only Exidy game I remember from back in the day was Death Race. Can't believe they were banned for being violent, given today's standards. I noticed a guy on eBay a while back had gotten the license to remanufacture them, and was selling them for 12K!!

[@TurnFullCircle]

Great in depth how to….way beyond my skills or brainpower lol….as always super entertaining…..all the best from the UK.

[@bengrogan1992]

My brother had this one in his inventory back in the early 1980s he was always working on it love this game but he had so many problems with it he sold it for 100 bucks i think i died a little that day as a 8 year old 😢

[@DoctorDetroit100]

When power supply smokes, check the EPROMS. I will write that down.

[@LyonsArcade]

I don't think the power supply did that although it may have, I think all these had been reworked and maybe they put them in the wrong spot, burnt the wrong file, something.

[@DoctorDetroit100]

@@LyonsArcade That makes more sense. Hope you do game play. I never like this game, three buttons..... To hard for me. Want to see you play :)

[@PlumGurly]

I think a 6502B (and maybe the MOS 6502C, not the Atari chip that some call that) will work in place of a 6502A. The differences would be slight other than the ability to be clocked faster and a fixed instruction. There are various 6502 chips. There was a MOS 6502C (mostly just a speed upgrade, though you can clock it at the slower rates) and then a modified 6502B that Atari called a 6502C. That last one is fairly compatible with the others, but I wouldn't use it to replace those as they are hard enough to come by for the machines that need that one. So don't use it an Apple, for instance, if an Atari needs it. Then there is the WD65C02. That won't be the most compatible with the older ones. I mean, it removed most of the illegal opcodes, maybe fixed and formalized a couple of those, and added new instructions. So not all older software will work with it. Code written to use the newer instructions would be more efficient. There are some timing differences, and that will cause problems if a machine uses it to bit-bang I/O. For instance, you cannot put a 65C02 in an Apple II since some of the instructions take fewer clock cycles. So the sound would be off and the floppy drive would trash disks on writes (though it might read them just fine). There is the "65F02" which is an interesting FPGA solution. When it boots, it copies the ROM and RAM to its own BRAM and runs most things out of BRAM. However, when the I/O ranges are accessed, it slows the CPU to the board speed and writes to both the BRAM and the original DRAM. So bit-banged peripherals will work as expected, while everything else is greatly boosted in speed. There is also the WD65C816. That uses up the rest of the unused instructions of the WD65C02, adding some 16-bit operations and up to 24-bit memory addressing (or 16 Mb). That has a compatibility mode to where it acts like a 65C02 when it boots, and software can put it in the native '816 mode. The pins are different, and if one wants to retrofit it to work in a 6502 socket, that would require a socket board that generates the missing signals. It doesn't use all the clock phases, so logic chips to simulate those would be needed. Maybe something like 2 inverters to skew the clock to create the other phase or whatever. I guess that is so board devices can lag behind the CPU a bit. While I'm discussing 6502 family differences, there was also the 65CE02. That one was interesting. It used the 65C02 as its base and added some instructions to allow some optimizations in code. Its notable difference it that it had a more efficient pipeline. The 6502 and 65C02 always assume 2 bytes need to be read, thus optimizing it for an opcode followed by an operand. But 1-byte instructions (total length, meaning instructions that lacked operands) still performed 2 reads. So it reads the 2nd byte, assuming it is an operand, discards it, then fetches it again to use as an instruction (not the operand of an instruction). But with a little more logic there, the 65CE02 catches this and forwards the unused operand to the instruction pipeline, thus saving a read. So single-byte instructions only take a single clock cycle, not 2. It also added long conditional instructions that could save a couple of bytes and cycles. The 6502 lacked those, so if you needed that functionality, you'd have to reverse the condition and do an absolute long jump, and do a short conditional branch around the long jump. So having a long conditional branch would make the code easier to read and a tad more efficient. That was the last 6502 family chip MOS/CSG produced, and it introduced a subtraction bug, maybe in decimal mode. There were other chips in that family such as the 6507 used in the Atari 2600 console. That was a cut-down 6502 with only maybe 13 address lines (8K RAM), no interrupt line, and no line connecting to the carry flag. There was also the 6510 as used in the C64 which added a 6-bit port, and the 8502 which was a 6510 on a different manufacturing process and I think 2 more port lines. The 8 in the number may suggest that they farmed it out to Intel to produce. Yeah, the vertical pulse sounds about right as I heard some 60 Hz in there. The probe's tone seemed to be modulated at 60 Hz (going by ear).

[@dreamcastfan]

Ooh, Aliens and Time Crisis 3 in the background! Can we have videos on those please? 🙏

[@pl5624]

One of the many pac man competitors..

[@pezjohnson]

Me: kinda of working with the video on in the background Video: SCaRY MUSIC Me: immediately stops what I'm doing to completely watch the video.

[@LyonsArcade]

Just tryna keep you on your toes is all

[@JayAlfredoG]

So many of these have multiple failed chips. Curious if it’s a cascade failure where dead chips short and cause excess current source in other things. Or are these often the result of a power spike of some kind?

[@waynegram8907]

JOE CLASSIC, what fixed the horizontal sync issue? I think you soldered the arcade monitors pcb or the ribbon connector on the arcade mother board. You said at the beginning you tested all the ROM chips which tested all GOOD but then you test the ROM chips again which you found a few of them when BAD. Without the Horizontal sync the arcade motherboard color data can't lock onto the arcade monitors horizontal scanning lines? Not sure what the theory beside it is on how the horizontal sync works

[@djimpulsion]

Just a quick note, Your amazon link for the US takes me right to my own home page, not yours

[@ray73864]

Forgive me Ronnie for I have sinned.... The other day I purchased a couple of items on Amazon and forgot to use the Amazon link :( FORGIVE ME!

[@lileveretteyoakumiii]

Yodelayheehoo

[@spankybear]

did you remember to subscribe?