Recent content by dmac

As a test, I opened ghidra, created a project, and imported a com file. The file was automatically detected as raw binary. I had to specify x86-16 real mode, as well as set the base address. That's about it.

Really? Remember COM is not a file format. It's just a filename extension; the file itself is a raw binary that gets loaded to a fixed memory address. Ghidra likely lacks the logic to associate a com filename with "this is a x86-16 raw binary loaded at x".

I trust FlashFloppy firmware quite a bit. If a real 1.44m drive would work, so will the gotek.

I would look at sigrok's table of hardware and pick from there. I own a dslogic which has been quite useful to me, but it was bought five years ago. There are likely better choices today. https://sigrok.org/wiki/Supported_hardware

As I said, it's right there in the Initial Setup page, in the official wiki. https://github.com/keirf/flashfloppy/wiki/Initial-Setup As an official wiki already exists, why not take advantage of it?

Reading FlashFloppy's documentation helps. https://github.com/keirf/flashfloppy/wiki Specifically, the jumper configuration is covered in Initial Setup: https://github.com/keirf/flashfloppy/wiki/Initial-Setup

I would start by dumping the ROMs.

Glanced at Ruud's diagnostic rom. No support for UART output? That's surprising.

I am reading this and I am confused. What diag rom are we talking about? Ruud's attachment is just a partial disassembly of the actual PC-1 rom, or the rom you already have, so I assume you're referencing a PC diagnostic rom I can't seem to find. edit: I guess this is the one...

I have seen strangeness with the BLASTER environment variable before, on freedos. It needs to be one of the first ENVs in the ENV block... if you have too many ENVs, some programs including games do ignore everything past a certain point.

Bonus answer: GreaseWeazle.

Note that, while using conventional is definitely the easiest and the default, it is possible to use high memory (640 --> 1024). Refer to optromloader's documentation.

I got you covered. All you need is a serial null-modem cable and/or a usb-serial adapter, as you only need to connect RX<>TX and GND, 3 wires. https://www.rvalles.net/bootstrapping-an-amiga-without-a-bootable-amiga-floppy.html (full disclosure: By me. Let me know if you try it)

English workbench floppies will load English keymap by default. Otherwise, Extras disk has a bunch of keymaps for a lot of languages. The desired keymap can be copied into the workbench disk, and s:startup-sequence can be edited to load your keymap of choice (e.g. setmap de). A good solution...

Non-plus A500 will ship either an 1.2 (33.something) or 1.3 (34.5) kickstart ROM. There's no variants (for ntsc/pal, country, motherboard revision, etc). It's gonna be either of those ROMs. You can tell which one you do have by looking at the floppy displayed on screen on power on or reboot...