EMS is expanded memory, not extended memory, as adrian keeps saying

If you are able to hook up to an external monitor, you ca probably attach an external power supply easily enough.

Love checking the manual AFTER using it!

Looks like Sony finally found a way to get rid of there warehouses full of digital camera's!!!

It's $36 on Amazon. Chinese brands hike their prices when someone gives a good review of a product.

Good job, Adrian! If anyone deserves a shot at this, it's you. I'm late here, but I hope this is working out for you.

Love your perseverance and delight when you have success.

That was my first computer! I loved that thing

Would love to see you test out the games 😊

I'm thinking of getting back into electronics repair, its been 30+ years, what would be the basic tools i would need besides, a vom , oscope, soldering iron

I screamed every time I saw him peeling the shrink wrap off of things. Leaving the shrink wrap on and just opening the bottom of the box is a really good way to keep the Box pristine even if it gets crushed for some reason it will remain clean.

That Apple PCI card is one of the few things that I don't have in my Personal Collection that I wish I had. I simply dont have the money to purchase it. There is a Networking trick for the Apple PCI card that you have. Software allowed you to install a Volume running MSDOS & Windows on the Mac. Ethernet on board the main Macintosh computer was shared with this device over the PCI bus. According to Apple you could not use the ethernet on Mac at the same time as the interface pass through to the PC. This was because both interfaces would have the same MAC (ethernet hardware) Address. That wasnt completly correct. You can't use them on the same layer 2 network segment because Layer 2 communication is done strictly via the hardware address. Modern-day Linux Android operating systems use a software MAC address to allow virtual interfaces to be used on the same physical interface by writing the packets out with a fake MAC address. The key was you needed a router/layer 3 switch that handled having different network segments on the same physical interface. So if the Macintosh was on 192.168.10.10/24, the PC card could also be on the network simultanously at 192.168.20.10/24. Because the segments are different, 10 vs 20 and as long as your router was okay with sending the traffic out and back in on the same physical interface you could communicate directly between the two devices. I proved this was possible at the time by playing a network game of Quake 2 which was the only interactive thing that ran on both OS and manouvered around until I could shoot myself. You couldn't interactively play because the same keyboard and mouse were used for both environments however that was the best way to show that both environments were communicating on the network at the same time without interruption. On Apple ][ printing... The hires screen print on the Apple 2 was possible without an add-in card. The two pages of highres screen are stored in memory at 0x2000 and 0x4000 with a length of 0x2FFF. Those were written out to the display in alternating fashion to do motion. The way you did a screen grab was the hit the programmers reset and from the command interfaced write those pages of memory to disk in separate files. Then dump them to the printer. You needed to write both pages to disk because one was always what was displayed and the other one was being written with the next motion page. Each byte in the resulting file corresponded to a single Pixel location and were directly written out to the screen. I asked how to do it in a retrocomputing stack exchange question so the method would not be lost to memory.

I remember playing our Master System. Cartridge-less Alex the Kidd inbuilt to the console. Played MK1 but it only had two levels The Pit and Goros Lair. Kano was also missing.

17:44 These Conexant chips work awesomely on Linux, tried on VLC on a similar card and works like a champ for NTSC(have no way to test PAL)

16:07 Component, maybe? 4 input connectors.

My Laser Turbo XT actually had sockets for up to 1 MB of EMS. I installed 256K; pretty sure I just used it for a third-party disk cache (probably Central Point) because the only software I had that supported EMS was Wordperfect and it didn't really need it.

I would wonder if the HP-150 was the first microcomputer made by Hewlett-Packard. I am a keyboard specialist who uses a microcomputer nearly every day, and am becoming a fan of computer technology. That is how I am reaching you. I have seen brochures and specification sheets on the Hewlett-Packard microcomputers and printers. They piqued my interest in computers and electronic apparatus. Anyway, I have a Dell OptiPlex all-in-one desktop computer, and I would not want to use anything else.

It does have hidden game

Sold ! I just bought one. 30 euros from Amazon. If that C64 came from the UK, there's a good chance that a younger me socketed those chips. The sound chip was always a real PITA. 3 channels and i'm tone deaf ! Compared to an Oscilloscope, logic probes are almost useless unless you need to poke turds.

Alex the kid brought back memories but i had the Sega Mega Drive i think but it was all compatible, Chopper i remember that but also MDK was a cool game that we played.

What was that spaceship game you were playing? I used to play that game on the NES with my dad but I don't remember the name of it.

Yes, the curve tracer was designed to catch fake transistor producers out. However, it did turn out that people were also able to use this equipment to help them design transistor circuits and achieve the best possible biasing conditions for their transistors in accordance with their specific characteristics. :P

I gave you a like just for the tshirt! 😜😝

Back in my teens I wrote code, burned to EPROM, for the Model B that allowed barcode scanning while sending transaction data back to a IBM PC. I think there were 8 Model B's networked together with the IBM. Someone wired a plug incorrectly and all 8 BBC's fried.

The connector looks like MCX (used often with TV dongles, like the (famous) original RTL SDR sticks before there were versions specifically for radio amateurs with SMA connectors). There are loads of vendors selling cheap (under 2 dollar from choice vendors) MCX to BNC or SMA adapters on AliExpress.

Great history. Takes me back to the only full height "MFM" drive I encountered, whilst repairing a computer of a fellow Uni student. Nice Indian girl. Completely failed to ask her out. Successful drive replacement though.

You say "without further ado" and then immeidately there is further ado: titles and something that might perhaps pass for music. Why not actually proceed without further ado? Is it just because so many others do it this way?

I remember when I used dial up internet, I had a BBS setup. People would connect to my computer late at night. I had a ton of shareware on my computer. I made good friends through connecting to BBS systems. My BBS was called ZIptank BBS.

When I lived in North Texas, I worked at AST, and supported that card you have in your hands!

The reason some drives dont reliably detect floppy disks with tape is that some drives use an optical switch for disk detection instead of a microswitch. If the tape is too transparent then the optical switch sees through it as an HD disk. Another possibility is hte tape being too flexible that causes the microswitch to not activate. Best to use 2 pieces of black insulating tape.

Would of been less complicated if you had simply used 100ohm resistors instead of 4K7 to bring the signal levels up.

AI BUILT THIS FOR SURE DOSS EYE AM

$32.95 for Attack At EP-CYG-4. That's $106 in today's money. A little perspective as I suck through my teeth while browsing the sales on Steam.

Good work !

God I remember being on these old Macs in college so I could do my Ear Training coursework (MacGAMUT ... #IYKYK).

I wish there was an RGB mod for the 1702. I used to have a 1084s :( * So apparently a company called Digitek made an RGB conversion kit!

Is there a way to contact you? Hanns from Germany

The Radius signal es MDA or CGA?

I have a G5 Powermac tower

Hello Adrian, I watched some of your repair videos where, if everything was good, the result was a working computer from the past. What happens to them afterwards? You must have an awful big storage for all of them. To watch your repair sessions is real fun for me, most astonished I was when I saw you washing Motherboards. Beeing a student of Physics I owned during the late 80ies a Atari ST F with memory addition to 4 MB and a 70 Hz black and white monitor SM 124 and I wrote my thesis with this machine. Beeing in my profession later I had a PC and for my hobby recording classical choir music I turned to Apple Computers. Greetings from Germany, Hanns

Strange that Turtle Beach are better known these days for their not so great gaming peripherals, like crappy headsets, chunky gamepads, and now apparently a direct drive wheel setup for sim racing.

I wish I had heard about this before! It's $40, now. Lol.

29:14 Oh, my God! I had one of these Orchid cards in one of my custom build PCs.

Much easier to just cut each leg of the chip then remove the chip, then remove each pin with the iron

I am amazed that someone can actually build a computer from the ground up, especially in this day and age. Im just wondering what the difference would be between having this hardware and just running this old software through an emulator on a modern computer. I don't quite understand the reason.

The S3 card with a 90 degree mod is probably for use with a 3DFX card. He didnt want to have the pass through cable on the outside of the case.

This video has much more value than just a simple review of a cheap oscilloscope. In just under an hour, this is a master class on C64 troubleshooting.

Back in the Elder Days, when I was building my homebrew z80, I didn't have a scope either... To test the clock, I clipped a lead to the signal and tuned in the 4mHz on my shortwave radio.

display board probly

MOS- the Yugo of microchips!