14 күн бұрын
5 ай бұрын
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@SobieRobie 22 сағат бұрын
486SX is fully 32 bit CPU, the difference comparing to 486DX is lack od math coprocessor.
@THEPHINTAGECOLLECTOR 21 сағат бұрын
@@SobieRobieI was obviously so much into the Cyrix specs that I took a wrong turn on the Intel 486SX :)
@HTMLEXP Күн бұрын
I get a 404 error when trying to view your wishlist.
@THEPHINTAGECOLLECTOR Күн бұрын
@@HTMLEXP that‘s the correct one: www.thephintagecollector.ch/wishlist/ Where did you spot the broken link?
@Coburn64 Күн бұрын
Great video, and it's always great to see another retro machine living on in the current year!
@8randomprettysecret8 2 күн бұрын
That's cool seeing it work a bit!
@slincolne 2 күн бұрын
Quick tip re Kicad and connectors - it's always a good idea to print a 1:1 copy of the Gerber's out on paper and 'test fit' the connectors, etc to doublecheck fitment and clearances. I've made the same mistake as you before - and it's easier to do the paper trick than pay (and wait) for the faulty boards :-)
@THEPHINTAGECOLLECTOR Күн бұрын
In theory, you‘re right. Though I had made the part by PCBWay, so they sourced the conponents for me. Lbeit the wrong one for the header, as I didn‘t pay attention to the spec sheet. But yeah, sourcing the correct parts cost be another 30 $. Anyway, lesson learned 😂
@DerekLippold 2 күн бұрын
As much as I like the more documentary-style, I am glad to see this kind of repair video from you.
@THEPHINTAGECOLLECTOR 2 күн бұрын
Glad you like it. It would be a shame to not show any of the repairs every now and then, as the real gear is the heart of my collection.
@jrherita 2 күн бұрын
I have nothing interesting to add other than thanks for sharing these cool systems and upgrades! the pricing of that P70 is completely amazing..
@Thiesi 2 күн бұрын
Yeah, my jaw dropped when I saw those price tags. Even not adjusted to today's money those list prices are some pretty serious numbers.
@8BitNaptime 2 күн бұрын
You skipped over the part where you removed the hub rotor. What kind of screwdriver did you use?
@THEPHINTAGECOLLECTOR 2 күн бұрын
The screw was fastened like hell, and also glued on. I could disolve the glue, but not loosen up the screw. After several attempts I used a drill to cut the screwhead off, later replacing it with a similar screw. There's actually no reason to remove the rotor, except to see if there's any damage from capacitor fluids underneath.
@john_ace 2 күн бұрын
Some 486DLC (most 40MHz rated) can be set to 2x multiplier by software.
@greatquux 2 күн бұрын
Great to see it back to life!
@THEPHINTAGECOLLECTOR 2 күн бұрын
Gratuity appreciated, thank you!
@BandanazX 2 күн бұрын
Only the most determined retro collectors can handle the IBM P7x. I was hoping you would use something like the Gotek instead of your disk adapter... but I totally get your collecting philosophy. But what are you going to do when the hard drive inevitably bites the dust?
@THEPHINTAGECOLLECTOR 2 күн бұрын
@@BandanazX I was thinking about a Gotek, but then decided (again) for a real floppy drive. The adapter would as well be needed for a Gotek, btw. And speaking of my attempts to get AIX running on this thing, the Gotek would have been easier for handling two dozen disks :) For the ESDI drive, well, I hope it never dies :) Backup plan: MCA SCSI adapter and a SCSI drive, or worst-case a SCSI-to-SD adapter. I did the latter already for an old Mac SE, and propably will again for restoring the NeXTstation.
@RetroTechChris 2 күн бұрын
@@THEPHINTAGECOLLECTOR there's an McIDE card too, but yea, I think SCSI is a better choice. I found several OSes don't seem to like to support MCA and IDE since it was a less common pairing.
@danielktdoranie 3 күн бұрын
I would love to see this running OS/2 and AIX
@BandanazX 2 күн бұрын
AIX and pains
@THEPHINTAGECOLLECTOR 2 күн бұрын
@@danielktdoranie me too :)
@atheatos 3 күн бұрын
The confusion with all these 486DLC, DRX, SXL models is understandable. The 486SXL comes in two versions: one for 386 socket (132p) and one for 486 sockets (168p). The 132p.... ok forget it! It is super rare and expensive. The 168p, ok there are adapters to 132p, but not that easy too (I have some). Pentium overdrive are only for 486 M/Bs. M/Bs with 168p socket (at best). Normally you need socket 2. So It actually worth's it using the 486DLC with the cache enabled (I have a video on that). Overclocking also a good option there. In your case though you might have to add extra circuit in the board to properly enable the cache. This is true for enable the cache on all this type of cpus. BTW: All intel 486 SX or DX hare 32bit bus (only DX has FPU). 386sx is 16bit, 386dx is 32bit (both no FPU).
@danielktdoranie 3 күн бұрын
You typed out what I was going to type out but did so way more eloquently than I would have
@THEPHINTAGECOLLECTOR 3 күн бұрын
@@atheatosOops, I was obviously so much into the Cyrix specs that I took a wrong turn on the Intel 486SX :) Thanks for adding the details. As for the Pentium Overdrive: Correct, those were for the 486es. However, as pointed out and linked in the video description, someone on vogons.org seemed to get one running on a 386 mainboard. Here‘s the link again: www.vogons.org/viewtopic.php?t=79610
@horeseplayinc 3 күн бұрын
Always a pleasure watching your videos! Geez IBM loved making their own standards/components back in those days!
@8BitNaptime 2 күн бұрын
@@horeseplayinc Almost to Sony levels!
@SteveMaves 3 күн бұрын
Nice looking P70! I recently got a Compaq Portable III back on the road and I think the orange plasma displays look really cool!
@FamousWorker 3 күн бұрын
nice
@toddalancox 3 күн бұрын
Seems like I mostly just programmed z80 assembly on the C64 CP/M. The C128 with the 1571 drives was a much better situation.
@toddalancox 3 күн бұрын
I had the CP/M cartridge for the C64 in early high school before getting the C128. Don't really remember the cartridges being rare.
@8randomprettysecret8 8 күн бұрын
Thank you so much 😊
@vmisev 8 күн бұрын
Thanks for the video! I’m quite comfy in CP/M, but I never touched MP/M & CP/NET - this was super interesting and educational, thanks!
@THEPHINTAGECOLLECTOR 8 күн бұрын
@@vmisev you‘re welcome!
@vmisev 8 күн бұрын
@@THEPHINTAGECOLLECTOR Now, I wonder will your patches work for other emulators/platforms like Vice (x128), Retro Virtual Machine (CPC6128) or AppleWin which supports SoftCard emulation? It will be fun to network together C128, CPC6128 and Apple II! ;)
@revision386 9 күн бұрын
I always love your content.
@slincolne 9 күн бұрын
I wonder if anyone has made a CP/NET parser for Wireshark ? It would be interesting to see what traffic flows between the MP/M host and the client systems.
@marksterling8286 9 күн бұрын
Wow this is a great video, I have not touched this stuff since early 1990s but it all came flooding back. Thank you for sharing
@THEPHINTAGECOLLECTOR 9 күн бұрын
@@marksterling8286 you‘re welcome
@idahofur 9 күн бұрын
Thank You for the video. Reminds me of the Serial network Lantastic sold. But, I can see how it comes in handy. Several Mini computers like a Dec. Yould could add several serial ports to. Terminals, Printers, and now lan ports among other things. As for the mail. I can't remember what Os I was using. Caldera Dos or what not. Got a similar mail error.
@NiceCakeMix 9 күн бұрын
Another really good video, well explained and easy to follow along with. Thank you as always for sharing.
@THEPHINTAGECOLLECTOR 9 күн бұрын
@@NiceCakeMix Thanks! My pleasure!
@asanjuas 9 күн бұрын
How clarifier for me is the ED editor to tell al of MSDOS was a copy and ripoff of the CP/M.
@THEPHINTAGECOLLECTOR 9 күн бұрын
@@asanjuas it totally was …
@kFY514 8 күн бұрын
@@asanjuas Apparently both were inspired by _ed_ from Unix. Which incidentally is in a way also a distant ancestor of vi.
@perceptron-1 9 күн бұрын
I haven't seen this since 1986, when I connected 256 self-designed Z-80 CP/M machines on a real RS-232 serial line, multiserver & multiuser & multitasc each, so I got a 256 x 256 x 256 virtual machine, corresponded to a 16,777,216 CPU supercomputer. Not as fast as today's.
@THEPHINTAGECOLLECTOR 9 күн бұрын
@@perceptron-1 can you elaborate how this was physically connected?
@perceptron-1 9 күн бұрын
@@THEPHINTAGECOLLECTOR Each CP/M computer panel had an 8-line RS-232 interface. Each CPU could exchange data with 6 neighbors. There were 8 x 8 CPUs in a matrix, 4 such matrix sheets next to each other in space, this used 6 serial lines / CPU, 2 remained outside the panel, which were the output and input lines, so that any of them could be connected to a separate keyboard and screen, through a 256 to 1 multiplexer switch or to any other peripheral through which the data can be loaded and the result can be read. There was 64K RAM on the panel. 256 x 64k in total, not a lot these days, and they all ran multitask CP/M separately. This was just a model so that when the time comes we can integrate it into 1 chip. That time has now come. We can make this machine with a million times as much memory, and a thousand times faster, and a single chip, instead of 2 m3 racks. CP/M is still the best system today, it's interesting that Google suggested it to me, even though it didn't exist when I last dealt with it. In today's age of LLM, this would be a very useful thing..
@MonochromeWench 9 күн бұрын
Serial port networking seems ideal for use with a modem but that default Authentication is really poor for a system connected to a phone line so maybe not the intended use case.
@kFY514 9 күн бұрын
Reconfiguring the system by recompiling (parts of) the OS... those were the days. I somehow associated this "tradition" mostly with early Linux, but of course it makes sense that people were doing it with earlier OSes as well. The network drive mounting refers to a server ID, which suggests that there can be multiple servers on the network. If the "network" is really just a bunch of independent serial connections between the server and the clients, how would a multi-server network work? Is there any support for routing the network traffic? Or do you just use multiple serial ports on the client to connect to different servers?
@THEPHINTAGECOLLECTOR 9 күн бұрын
There‘s no routing. And as far as I understood it, you would add multiple serial connections to different servers for a multiserver environment. As you don‘t provide the serial connection, but an optional server-id, the system would propably figure it out itself, which serial line matches the given server-id.
@vk3fbab 9 күн бұрын
NetWare 2 required you to link object files as well. Common in the day.
@TSteffi 10 күн бұрын
From what I understand, you can also write the MPMLDR to the boot tracks of a disk and boot into it directly. Similar to how it works with the CPMLDR for CP/M 3. I'm sure I will refer back to this video, once I get MP/M running on my own hardware. You did a great job on exploring the multiuser aspect of MP/M. What I would wish for is an exploration of the multitasking capabilities of MP/M, the other big selling point. I would have jumped on MP/M much earlier, were it not for the advanced features of CP/M 3 that never made it into MP/M. Like the support for up to 512 MB drives and up to 32 MB files.