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There is a standard and it has been in place since the '80s. CMD used "cd[X]/path/to/dir/:dir_name" //path/to/dir was absolute, while /path/to/dir was relative. If various systems are not using this convention, I'd push the developers to grab a CMD FDD or HDD manual to get the syntax. It's...

I can't take much credit for the state of SD card support for the Commodore, but I will take credit for pushing Ingo Korb (author of sd2iec) to use CMD style commands for directory changes and partition changes, and so on. In my opinion, the standard for mapping partitions should be to leverage...

This is how sd2iec works, exactly (disclaimer: I wrote the REL file support in sd2iec). REL files are indeed not supported in disk images in sd2iec, though the support was not a big deal, it was just additional code that didn't seem wanted by the community in enough quantity to commit to...

As some may know, I design peripherals for the Tandy Color Computer. Given the limited expansion I/O space available on the CoCo, and the further restriction that (concerning I/O space) only $ff40-$5f is "switched" via the MPI, I'm trying to ensure CoCo peripherals can be relocated in I/O...

Again, some interesting disks (dozens) with no doubt some type of project level data on them. Some say "Movie Data". TOo many projects here, so happy to send on their way to another party interested in the disks or the data (or both) for cost of shipping: Jim

In a batch of TANDY Model II stuff, I found the following disks, which appear to be DEC-related. I can't image them yet, don't want to re-use them without imaging, and wonder if there's anything of use on them for someone else. As such, if someone wants to pay shipping, I'll send them on their...

Have one here. It booted. I was playing with it. Then, I popped it out and rebooted to an original TRSDOS 2.0A. Something on that disk left debris on the head. drive would not load. Put in the CPM disk, and it are the coating right off the disk on a low track (outside edge). So, no more...

Drive boots and I was able to use Laplink to copy all files off to another PC. But, I wanted to make an image of the HDD before it dies. I tried to find a tool like Laplink that would image the drive over serial, but could not find anything. Anyone know of a tool? So, I pulled the drive, and...

Unit boots from 1.44MB 3.5" floppy. CMOS battery needs replacement, plasma screen has an issue, and Conner CP321 HDD is non responsive. KB works, but cord has the common plastic brittleness. Plastic is in fair to good condition, but KB does have some plastic missing in front corner. Pics...

Side rant: You have to essentially disassemble the back of the unit and remove the motherboard to get to it! :-( Anyway, I got to it. It's a Eagle Picher LTC-16P-CO-F-S3 My Google-fu must not be up to snuff today. Can't find any mention of it online When I search, I get references to...

https://github.com/go4retro/TurboMaster/ Progress: PCB scanned Artwork converted to EAGLE schematic and PCB PCB design ordered PCB design populated and confirmed working U1 PAL reverse engineered U4 is not registered, so should be easy to determine. U6 and U18 are registered, so tougher to do.

Non working Portable III. When power is applied, PSU cycles, trying to start. I pulled the unit apart, and the PSU will run with no load, but clicks. If I slow down the fan, the unit resumes the cycling. Unless there's a way to fix the PSU, I think I need a replacement, but not sure if those...

So, now that my CP1 is working (temp using an IBM FDC, but am working to repair the Compaq one, since the IBM one does not fit in the special slot for the Compaq FDC), and the keyboard is working once again (curse the designers of that KB, but kudos to Texelec.com for the new pads!), and I...

After buying a dual floppy (looks original inside) Compaq Portable I (but, I'm not an expert, so don't shoot me if I'm wrong :-) at VCF East a few years back, trying to boot it, failing, and stowing it away for a better time to diagnose, I finally pulled it back out and started debugging...

Prototype unit, assembled and working: Next steps: Add code to support sequential files Add relative file support Test 3v3 operation at 8MHz Create cost reduced production PCB

Sorry to resurrect an old thread, but I'v designed some RAM and ROM cartridges for the cc40, and I am interested in more details on how TI planned to use the two port pins.

For those not on other forums, I am working on a TI HexBus-based SD card drive, and I have it working (well, loading and saving programs, other stuff being added as time goes on) GitHub source code is here: https://github.com/go4retro/HEXTIr Video of unit operating...

Does anyone here have a KayNET System: https://archive.org/details/bitsavers_kayproKayn_4822341 http://maben.homeip.net/static/S100/kaypro/hardware/kaypro%20kaynet%20users%20guide.pdf The product is called "KayNet", a baseband twisted pair CSMA/CD local network operating at 125kbps. It uses a...

I know this is a long shot, but I am wondering if anyone else has a circa 80's speech synthesizer made by Jameco Corporation called the JE520? It was sold in two forms, as I recall, a JE520-CM for CBM, and a JE520-AP for Apple units. If anyone does, I am wondering if they might be able to read...

Through the generosity of a Classic Computers mailing list member, I have a few odds and ends for Compaq SLT/286 and 386/SLT machines. If anyone is looking for a piece or two to make a machine whole, let me know, as I might be able to help. Jim