It's a Weller T0051502699N I see it listed on Amazon, Digikey and Mouser

please email me at [email protected] and I'll email it to you.

Sounds like a nice system. Are you offering to sell it?

Yes I don't have space...I repair generators, mowers, etc. For the fun of it and give them to those in need...but it can go cheap...donations are welcome and I honestly have no way to ship it...much less what it would cost...I can send pictures of what I have

You might be surprised...I have extra power supply parts...like transformers and such...heavy stuff

​@@ShadowTronBlog is this your x account? I quit during ICQ and yahoo chat days

Yes this system is for sale...I know 5k ...nope...1k and get it out of my garage...no I don't know shipping...I have moved on.( but my wife says why are you holding on to pc133 memory)...I'm a computer hoarder...help

Thanks. Hope it was helpful.

Thanks! Let me see if I can find the files. I lost my archive and may no longer have them.

@@ShadowTronBlog Thanks, appreciated.

Thanks for letting me know!

Thanks for sharing the story. Any other details you remember and want to share would be appreciated.

www.hakko.com/

Nice. Looking forward to your feedback and comments. :)

@@ShadowTronBlog Looking forward to getting the iron warmed up!

Yes, I believe we can ship to Poland. You can check with Robert at stream357 <at> parastream <dot> com to verify. He handles the shipping.

I memorized the small program ages ago: 0000:DB FF D3 FF C3 00 00

Very cool. Hope you have a lot of fun with it. :)

We're very close to offering the board, other boards, individual components and kits for sale. Email me at [email protected] and I'll add you to an email distribution list who will be the first to know we've opened the site for sales. I'll also be posting on the FaceBook group "Vintage S100 Computer Enthusiasts" when the site is open. I'm posting content there with board photos etc. I reviewed the sales site yesterday (10/16/24) and it's really close to being opened for sales.

Glad it helped!

The drive is in storage and I don't have access to it at the moment. Sorry.

I use an iPhone 15 Pro Max. I've had it about a year.

@@ShadowTronBlog I've only just noticed :)

Really good idea!

Extra S100 boards and manuals

One of the real joys of these early machines is you can fully understand both the systems hardware and software. You can compile your own version of CP/M. BASIC, assembler and C are all available for programming. You can also design your own boards. The machine is simple enough to really dig into yet capable enough to run applications such as editors and games. There's nothing like adding support for hardware you designed directly into CP/M.

@@ShadowTronBlog Yes, I love opening black boxes. Working through Ben Eater's computer theory through building an a 8-bit computer series. I think I am going to build his 6502 base kit first as a warm up and then hopefully that will put me in a good place to buy one of the IMSAI reproduction kits you are guys are launching. Again thank you for all your hard work and I am following all your updates!

Let me clarify a bit. Dual Swipe (or double swipe as I called them) are generally available. For most of my projects i use dual swipe however for the best reliability I use machined pin. Machined pins are generally more reliable but are more expensive. Jameco is one vendor I buy from. You'll see examples of both socket types here: www.jameco.com/shop/KeywordSearchResultView?langId=-1&storeId=10001&catalogId=10001&search_type_c=jamecoall&freeText=ic+socket

Hopefully within a couple of weeks. You can DM me from the post on facebook and I can add you to an email list that has the most current updates.

What FB post?

@@c1ph3rpunk I'm posting on the Facebook "S-100 Computer Enthusiasts" group. facebook.com/groups/s100computer For this post search the group for "RTR511"

I'm impressed. :) I think my issue is a mental block. I need to try drag soldering.

I have no idea.

I don't think so. This was a long time ago. As I recall nothing in the APPLE ][ project required recapping although as I recall both of the power supplies I have need the RIFAs replaced.

No. I no longer have them.

What about vfd screen that you dismantle in this video. Had you have that vfd screen only or you also don't have!

@@asimbaqi In the end I hold onto very little stuff. Most of it is passed on to fellow collectors or electronics enthusiasts. No, I don't have the vid screen.

@@ShadowTronBlog ok thanks alot.

Not sure I follow the question? Does ERC tell you the unit is missing? Sometimes, in the schematic editor I need to add a 2nd component of the same type for the component missing the unit, delete the duplicate units the change the reference on the unit that is left over. I've accidentally deleted or name one of the units wrong in the past. What does ERC say when you run it? If this is a KiCAD 8 issue I haven't ran into it as I'm still running 7.

Awesome! Thanks for letting me know. Figuring this out was a TOTAL pain. Glad it helped you.

The 8080/Z-80 can directly address 65536 (64K) bytes of RAM. Each also supports 256 I/O ports. The I/O ports are numbered 0..255; each port can either write or read 8-bits. When a port is addressed the port number (0..255) is output on A0..A7 and a byte is either read or written on the data pins (D0..D7). The CPU has pins that control memory read or write, it also has pins that control port read/write. While memory will store the byte written ports work different. It's up to the device listening for the port to be written too / read from to take whatever action the device is designed to do. On an RS-232 card the data in/out of the UART might be on port 10. Port 11 might configure the UART for items such as baud rate. Port 12 might have the status bits for the UART, one bit might mean there is a character ready to be read from the UART. The user needs to read the manual for the card they want to use and configure the card for the ports they want it to use and/or modify the software to use those ports. Look at the opcodes in() and out(). BASIC usually defines the functions INP()) and OUTP() or something similar to talk directly to ports. Hope this helps.

Thanks, Yep, I like to leave all the mistakes I make in the video as I believe the best learning happens in these and it helps encourage others to work through their errors.

Without the datasheet they can be difficult to figure out. Knowing the mappings makes it easier. Useless no, but you need to know some of the details. In the end it's just a ROM. Like an old EPROM it's had to know what the content does without the larger context.

Nice, and thanks for sharing this!

At the moment both of mine are in storage so i can't dig them out to take a closer look. I don't recall ever see an actual component layout.

@@ShadowTronBlog no need to, it was just if it was super easy, I found another video with the switchmode converter, this confirmed my idea mine was a later upgraded model, I also found the two voltage refferance chips are now MC1403U and not 20-25 as the original schematic say, one is the ref for ADC the other one for OHM current source, mine works perfectly now and was easy to calibrate. maybe i release a little video about mine.

@@TeardownOZ2CPU Awesome. I video would be cool. Looking forward to it if you decide to do one.

Thanks.

Thanks. Always nice to get a bit of recognition.

I'm not an electrician and am not qualified to provide any real guidance beyond this: 220 can be lethal. I don't recommend you go about working on the outlet yourself. I suspect an electrician could add two 110 outlets to the 220 circuit but you will need to ask them. If you use a step down transformer you need to make sure it can deal with the current/power demands of the soldering tool. Some ratings are based on short term "spike" current demands instead of constant current demands. If the step down transformer is underrated you risk a shop full of smoke or even a fire.

@@ShadowTronBlog my thoughts exactly thanks for the reply

Hope this helps you get into the BIOS. I spent a LOT of time figuring this out and went down a LOT of dead ends.

No, i don't have a schematic.

Yes, CP/M needs to be loaded and running before you can load other programs. CP/M is the operating system for the Kaypro in the same way Windows is the operating system for a modern PC though CP/M is much more primitive. The spinning disc could mean the floppy is bad, there is an issue with floppy drive itself or a deeper issue in the system. If you search eBay for "Kaypro boot disk" someone is selling a set of bootable disks for the Kaypro 2x,4 and 10 systems.

@@ShadowTronBlog Ah oke, thats great to hear. I get the message with other disks that the computer cant read the diskette with, for example: mbasic. I swapped the disk drives. I get for both drives the same results with the disk i have ( i have 5 diskettes for the kaypro II), so that gives me hope that only the diskettes are the problem. And not the drives. If I put a random empty floppy in it, i dont hear the drive head moving, it just keeps spinning. If i put the CP/M diskette in, i can hear the head moving two times. Then after 10 seconds i can hear the head again moving one time. This just continues, but nothing happens, the message with 'insert diskette in drive A' stays. As I told earlier, with a diskette with for example a wordperfect program for the kaypro II, i get the message that 'i try to boot a diskette, but that i first need to copy the disk'. I read that it is a sort of protection for the software, that the user does not overwrite the diskette by accident. Thanks for the ebay sugestion, that guy lives also in the Netherlands( me too), so i had contact with him. He will send me some disks. Thanks for the reply. Old computers are really fun. I have a couple, but this is the first CP/M machine for me.