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I made a little perl script, that disassembles all tandy roms with the help of 6809dasm.pl and greps for JMPs and JSRs into BASIC and KERNAL-Rom. The results are listed in a big textile, which I would like to attach. That should make it easier to see which Tandy roms work with the Dragon and reveal...

But with its serial UART it makes for a great DriveWire server! I read a bit about the RPi and it seems that it only has one UART available on the pin headers, and this one is used as serial console (for kernel messages and terminal login). So for DriveWire you will have to use the USB port (like o...

Looking forward to learning how to program assembly and connect a Drivewire, in no small part through the expertise on this forum. Inside the Dragon is a great book for learning 6809 assembly as well as more specific Dragon internals (PDFs around). I was lucky to find a paper copy on Amazon for a f...

I am glad to hear that, Rink! I think heavy commenting belongs to assembler programming, where identifiers and structures often are less obvious than in higher level languages. Although I try to be clear and informative so that other people can follow and even learn from it, the main reason is to be...

I have added a DLOADXM command which loads and executes. Here is also a zip with precompiled WAV and linux (x86) binary.

Since I looked around for a while before I found a second hand monitor with composite input, I ended up with a list of monitors . I wanted a small one but ended up with a 17". On the other hand the older 15" monitors often had frames as large as this one anyway :) . Feel free to fill in other models...

jedie wrote:I see from above that there is a 74LS04 inverter and the Max232 level shifter

My "USB to TTL" Adapter is only a alternative for the Max232 level shifter, isn't it?

Yes.

Your adapter from viewtopic.php?f=6&t=4270 is a complete ready-to-use package?

Yes.

Thanks KenH, especially with DLOAD back in business, this is a must for every Dragon 32 user without floppy drives, at least

tl;dr: DLOAD is for loading programs from a computer to the Dragon over a serial port. Now it works on the Dragon 32, and fast! The DLOAD command Back in the eighties I was intrigued by the DLOAD BASIC command that was there in the ROM, undocumented and mysterious, but all it did was giving IO erro...

But feels not as a physical floppy drive? When using DriveWire the server acts as disk controller and floppy drive. So you still use a DOS (HBD-DOS) like if you had a real floppy drive, but extra drivers in HDB-DOS send translated disk controller commands over the serial line to the server (and rec...