Repairing and Testing the
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- Опубликовано: 30 июн 2024
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Today we repair, and test drive the rare Sega Teradrive from 1991
#sega #retrogaming #japan
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● Series Links
Ep 1 "When Sega Made a PC": • When Sega made a PC. M...
Ep 2 "Repairing and Testing" : • Video
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Love to see some more old fashioned trash to treasure series again! Always was a bit the soul of the channel to me. :)
Its my favorite part of the channel. The history and the restorations are unbeatably awesome...
Nobody was ever fired for buying an IBM. So if I was a CEO in the early 1990's this would be the first computer in my office.
well you world be fire if your boss tell you to buy a apple computer
@@amigaouk Bro, there's nothing higher than a CEO. Judging by your spelling though, I'm not surprised at your post.
My director of engineering was fired for buying myself and a another lead engineer ThinkPads, but we worked at HP, so...
@@the_kombinatorshareholders. Shareholders are CEO's bosses.
Holly's magic?
Holy magic?
Raising electronics from the dead?
She's a cleric!
A friend and I are Tera Drive owners and are looking to set up a Discord or something to connect with the rest of y'all. We've got some pretty cool stuff in progress (MD video bypass to address the noise, 8.5MB mod, MegaCD adapter), and I've been updating CapsWiki as I've been repairing units. I'm not sure how to connect, but hopefully you see this and we can get something cooking :).
Edit: The hard drive can be finnicky - if you ended up not getting it working, I would love to get in touch so we can try to get it dumped.
25:00 lol, hey!
26:00 I currently am reverse engineering ATFM. Puzzle Construction uses it too, and it's a different version. The security unlock refers to the Sega TMSS (Trade Mark Security System). CRTG.SYS does the same thing, and it seems like ATFM and CRTG.SYS were developed by the same guy. CRTG.SYS has some REALLY interesting bits (I already RE'd a lot of it) - biggest is that a MD cartridge can expose a ROM or RAM disk to DOS (presumably, SRAM, so you can save to the cart from a DOS game).
Hey pop into discord.gg/rmcretro and we can chat thanks
@@RMCRetro will do when I'm done with my work day :)
See if you can clip a 386 overdrive chip to the 286? The 386sx 40?
Discord is cool but the separation of knowledge is crazy IMO. How is a new Tera Driver user supposed to know that stuff he is looking for is located on that one Discord server? This criticism is not against you, nor any Discord user. Just want to point that it is hard to find informations these days, mostly due to everything moved to separate Discord servers.
Adrian has done a full dive into the PicoMEM board. Well worth watching.
Well done Neil and co, a wonderful case of Terash to Terasure.
Seeing the Sega branding on everything is such a lovely sight. A shame it never reached the rest of the world. Perhaps in an alternative universe we're all using Sega computers.. Thank you for sharing
This is a good example why it's always a good idea to just replace all caps while the board is out.
But it's absolutely awesome the whole thing is working.
Great job guys! 💪🏻👏🏻
My god that's a beautiful piece of retro artwork. Black PCs of that era are almost nonexistent and when you see one, especially with that VCR player style chassis.... Gorgeous.
The retroswim demos are awesome. Also the idea of an rts using both sides...
"Rise from your grave" 😂 takes me back 👍
I always heard "wise fwom youw gwave" on my genesis.
@Tannlore
Elmer Fudd lived in it?
You're a zombie too?!
That wonderboy 3 tune is an absolute nostalgia banger!!
Beautiful system. Sleek and just gorgeous looking. Back of it looks like an old 80s VCR machine. Thank you for restoring it. I'm a massive fan of the SEGA Mega Drive.
was great to meet you and holly finally at the cave saturday. Thank you both for making us feel welcome, Me and my partner had a brilliant time!. We'll be back again
I’m so impressed by all the troubleshooting wizardry. Thanks so much for taking the time to make the video.
Great Job as always, great video as always. Very well done.
My uncle had one of these when I was a kid. As he was an electronics whizz (he designed flight Sims for pilot training, the big ones that actually look and move like a plane) I had assumed it was something he built. He must have picked it up on his world travels. No idea where it is now but I'm reaching out to that side of the family
Another excellent video that I'd been looking forward too
Glad u got it all fixed and saved , so we xan carry on using ,playing for years to come
Great work!
RMC is the best THANKS for your content!
I want to see more about the TeraDrive. I used to drool over it in EGM back in the day.
This system is something that I used to drool over as a kid and can't wait to see you using it.
I Caught Wind of this Beautiful system way back in the 90s, Im not positive what Magazine I saw it in... PC or Gaming, but I begged my dad to help me figure out how to Put our Genesis into our Shoddy 386 tower, He was a Toolmaker, he could have help me made the Brackets & Cuts... He didnt want me Scriewng everything Up LOL
i absolutely love this community
I never had anything like it, but I was always a fan of oddball hardware like this as a kid in the 90s
Words can't describe how much I'd like one of these.
Redoing 60caps??!? Rather you than me.. I wouldnt have the patience.
You would if you owned this rare specimen
@@Twenty_Six_Hundred nope. I seriously wouldn’t. I’d get someone else to do it, or sell it. I have patience to change one or two, but not 60
Nice to see my PicoMEM in a so cool PC ❤
Ohh, this looks lovely. I want one😍
Great video! I enjoyed learning about such a cool mashup machine. It could've been amazing if they'd gone for a 386
That altered beast sound effect
i would have thought the terra drive would be a nice way to develop megadrive games given the integrated nature of the system.
what a cool looking machine and concept.
That Tetris -like game you see at 24:20 is very much like the Sega Megadrive/Genesis game Columns which also had a sequel called Mega Super Columns.
So cool!
Upgrades have been done on the TeraDrive to swap out the 286 CPU for a 486DX.
One of the best things you could do (and I hereby challenge your Australian friend to do this) is make a program that allows the Sega controller to be used on PC games either as an actual PC joystick or as a replacement for certain key presses. That shouldn't be too hard as he already showed a PC side program using the pad. I remember seeing this long ago and thinking it could be used to somehow program Sega Genesis games and test them. Of course now they have the Sega SDK and easy programming environments like BasiEgaXorz (my personal favorite) for making homebrew. I always wanted a TeraDrive. Great to see one resurrected!
This functionality does seem to exist in the PC setup screen I showed, but I'm assuming a DOS driver is needed to make it work. I'm still looking into that side of it.
Such a cool system. I bet it is capable than much more than people ever realised. I do want to give my vote for saving mechanical hard drives where you can though. I think they are a major part of the whole experience. There's a danger that in 50 years time, the people tasked with preserving these systems will wonder why nobody cared about preserving the storage media and just discarded a big part of all these systems. I understand it's not always possible, but I do think it's worth putting a bit of effort into.
Woo-hoo! Re-capping montage with Blade Runner-esque music!
What a great machine! I am thinking here that although this is a very rare machine, someone could "merge" the two parts (MD + PC) inside a FPGA Core, so everyone could enjoy and poke around with the possibilities of this masterpiece... Hope this does not take too long.
When I was in the game industry I saw some cool machines from Japan. The Super Famicom which was a Super NES which came with a Floppy Drive. As well as the PC engine which was the size of a cdrom drive & with a back plane you coould connect a cdrom drive. The US called it a SuperGrafx & made it so much larger. That was because the yanks wouldn't have liked the size (bigger & heavier s better). Their costs of thje games was due to the cards, like the Super NES the more space required for your game. That's why later you could also get games on a cdrom. I can't remember if it also need a card though. And the final one which is similar to yours is an X68000. Keep up the good work showingh these forgotten machines that the younger generation would never hav seen
Kind of wild that 2 years after the release of the 486 and 2 years before the Pentium and they were slinging this with a 286. It's definitely one of the nicest-looking 286s I've ever seen, though :)
That SEGA branded IBM keyboard IS A FRIKIN' BEAUTY!!! What IBM keyboard model is it based on?
@17:35 Japanese keyboards have Hiragana printed on them, it is only phonetic sounds, definitely not what was translated.
The ISA bus is electrically identical in every slot, so it should be possible to have a card with two Picos on there, one for the PicoMEM and one for PicoGUS.
Pretty interesting to see the handshake for opening the interface to the sound chip, I wonder how this works.
Presumably there is some routine running on the MD side, to relay the instructions from the PC side to the YM chip?
those sweet, sweet yellow hack wires on the motherboard @ 6:12 :)
I would train my Amstrad mega pc for one of these amazing things!
there was a MSX / mega drive combo as well
Yeah the Cave is one accidental date setting away from crashing the internet, all the worlds computers and launching all the worlds nuclear weapons, how? Because he gave all that old tech Wi-Fi connectivity through add in cards. Hubris pure hubris!
Shall we play a game?
Correct me if I'm wrong, but I remember ads on tv for the amstrad mega pc in the UK.
I've heard that these things were great Megadrive development kits, but I'm not sure about it. Considering that these weren't really that common, I'd wager that they're weren't really used for that.
I wonder if it would be possible to write DOS games which make use of the Sega hardware. I also wonder if a ZX Spectrum or Amiga emulator could be written for it... maybe not because it lacks the special chips for those systems...
MCA bus HDD? Ya, most of them are now dead. IBM just had to do their own thing with the PS line. :p
Amstrad also had a PC and Megadrive in one computer. The PC part ran dos and a windowing system that might have been GEM (I can’t remember) and the megadrive part ran regular UK megadrive games on the VGA monitor.
This makes an appearance in part 1 of the series 👍
I've had this idea, years ago, for combining an NES (North America not Japan) in a PC case, I didn't get far though and ran into problems, for one the 72 pin Connector, the 12 volt power, RCA Video and audio or RF. I think now if I were to combine the 12 volt power of the NES into a relay switch or into the PC's ATX PSU, then pass through the RCA video and audio into VGA Via a PCI card that would work, though that means doing some work on the controller ports and the Power and reset buttons for the NES and where to position the Cartridge Slot.
Return to Zork is a game that runs on MADE. I wonder if that batch file could be used to unlock FM sound in RTZ on the unit?
It might be worth while swapping out the leaky caps on the HDD and trying it again. In that way you could possibly backup any software and O/S image it might contain as I presume that such software is pretty rare these days.
Presumably the gamepad to keyboard option in the firmware is so you can play PC games on the MD pad.
I was surprised to see that there is some integration between the PC and the megadrive sides. Graphics acceleration was something lacking on PCs, so is it possible to use some of the VDP capabilities with the VGA chip, like drawing sprite, It would be awasome!
I think developers in Sega had ISA boards of Sega Mega Drive prototypes around that they where using them in their 286 dos coputers to develope games and someone realized that it is a good idea to combine both in a computer and develope some games that utilize the three processors but the idea didn't really work.
It would be interesting if they could have somehow combined the greater onscreen colors of the VGA card (four times the Genesis) with the Genesis’ greater color palette and ability to handle sprites.
2:21 what didn't feel better than any Amstrad item????? 🤪
A Sinclair item?
@@RMCRetro Well, Amstrad DID buy Sinclair...
@@RMCRetro nope, Sinclair may have had faults but he was a true innovator, Amstrad was a company that tried to cash in on trends. The ZX and Spectrum series of 8-bits were genuine standout designs (not forgetting the "fun" of the wobbly ram pack for the ZX81). Most of Amstrad's consumer electronics were very cheaply built, the exception being the CPC series, which were not bad, but it will always be a byword for plasticy junk.
I love old technology
Imagine Picomem have NVMe slot. LOL
Love it! The hdd emulator that has more CPU power than the rest of the system. 😂
Well @retroswim seems like a nice guy and just got a follow.
I imagine CD ISOs are/will be supported --- Seems very similar to a Blue Scsi.
A really cool odd system
I noticed it had the sega cd connection as well….. it should work …… there just wasn’t a cut out for it…..but it is there
It would be nice to try a 386 upgrade card, the kind that slots over the 286 CPU (if it is soldered down).
I love all the trash to treasure series. Is there any possibility to upgrade to a 386?
It'd fun if consoles would've been available as expansion cards with common use as multimedia accelerator.
17:40 - It “translated” the kana (syllabary) on the keyboard as words, even though they just represent sounds. So か (ka) became “mosquito,” き (ki) became “tree,” し (shi) became “death,” す (su) became “vinegar,” と (to) became “and,” etc. Machine translation tends to be laughably terrible with Japanese.
jappanese keyboards have a phonetic alphabet on them, nothing to translate in the alphanumeric zone :P
“Hours” - Days, weeks 😢
Looking at this now, also with the built-in graphical menu, that awful HDD... it kind of looks like they stuffed a megadrive into a PS/1 2011
PS/55 model 5510, which most closely looks like a PS/2 model 30-286
I wonder if there is there an FPGA 286 implementation anywhere that could be overclocked? :)
When it comes to caps, when in doubt, change it out
Those Japanese characters are (mostly) hiragana, which is a system of text that represents different syllables and so each character doesn't really have any meaning on its own.
what is the biggest size hard drive that this PC can support? :O are there any other hardware upgrades you can make to it to make it faster?
But would've it been cheaper than a 386 and MegaDrive, which you can run both at the same time because they were separate units, ie, one for the kids and one for the parents..
If the two systems are integrated and the Mega Drive can read data from the PC, could it be possible that it was used internally as a development system for Mega Drive games?
I think if they put a 20 Mhz or even a Harris 25 Mhz Harris 286 CPU, it would have been a lot better.
On Japanese keyboard you can find mostly hiragana syllables, for example that shi し character. Translator translated the shi as a de ath correctly, but in Japanese they write it with one kanji character as some words are written with kanji and some with hiragana or katakana syllabic alphabet. Since you can write japanese with hiragana just fine, they used it as input method or use latin alphabet input. Windows for example has a input helper that suggest the right kanji or other glyph you want to write. If you want to write the de ath you can press the し button with hitagana input option or write S H I on latin alphabet input option and the helper suggest the right kanji glyph for it. 🙂👍
With a 386, we would have at least be able to run Linux on it.
Wonder how easy it would be to rip ROMs from the cart with that? Think the 286 wouldn't be up to it, but I'd like to be proven wrong.
Is there a hdd image of the tera drive?
FWIW, 2 GBP is a very cheap price for solder sucker tips. Hakko tips are about 10-20X more expensive. :(
Honestly? I want an emulator that can replicate the swapping behavior between megadrive and PC. Both for the sake of 'let it be emulatable to preserve hardware' and
...whath appens if you virtually hook a sega CD up to all this?' Use the PC to store data and have one set of screens, then it hand off into megadrive/cd mode then back for certain situations.
I want that to be possible in emulation.
I physically have a Sega CD hooked up to my Tera Drive. It sort of barely works, but I'm working on a revised PCB layout to fix the issues I have with it. Right now, I am fairly confident a MSCDEX driver would be possible, so you could treat the CD-ROM as a regular drive, but testing this out sucks due to the lack of a suitable emulator.
@@ZiggyTheHamster Rock on with that wacky wierd awesome tomfoolery.
@@singletona082 I’m hoping eventually we get enough documented so it can be a target in 86Box, because it would be a fun platform to make a modern retro game on.
Indeed, the likes of Test Drive 3 need 386 at least, 286 is too slow. But hey, you can still play Wing Commander II with it.
Wing Commander 2🤔indeed teradrive had the absolute minimum specs...in reality you needed something like a fast 386/486sx to play well
Need vinegar for your fish and chips... just press 'R'
Huh. Nichicon makes capacitors? Could've fooled me.
Was there a Sega-CD or 32x add-on made for that?
See if you can clip a 386 overdrive cpu to the existing cpu?
So, while the MegaPC might be a more binary affair than the TeraDrive, it looks like it has one huge advantage over the TeraDrive: The MegaPC can use the MegaDrive sound card as an Adlib compatible soundcard. Maybe not the hugest of advantages but I'd count it as an advantage nevertheless.
I'd love to listen to a PC game using the Yamaha chip. Has this been done/recorded?
@@sonidojamon I am not getting the impression that it has. I am also not sure if the YM2151 is compatible with the YM3812 of the Adlib but it works somehow on the MegaPC. But yeah, if the TeraDrive could use the Mega Drive's FM chip as an Adlib card then that'd be cool.
What's with the single color frame? SEGA's version of Ambilight? 😂😂
is the drive failure just down to cmos battery death and it not knowing how to talk to the drive perhaps?
No; the CMOS on this thing doesn't store anything about the drive as far as I can tell while reverse engineering it. But, it is not ATA (it's XTA), so there are a whole bunch of situations where it will not even try to boot off of it. One such situation is if you have the older XTIDE BIOS - it conflicts in a way that makes it not detected.
👋
That frame rate in Test Drive 3 is unfortunately the way the game was "meant" to be played, any faster and it gets hard to control.
Do you think there could be something on the HDD that would be worth archiving?
There absolutely is unless it was used as a desk accessory by an executive. Some folks with TDs have dumped e-mails that made it clear their systems were formerly used at Sega, I dumped The Manhole from mine, and there are a ton of treasures from TERA-NET which are not preserved.