archive.worldofdragon.org

Thanks. It would be sweet now if it weren't for the crazy ROM CRC idea.

The 20120507 snapshot works for me. Now autodetects Dos and I'm able to load cartridges using Ctrl+I.

-- Rolf

There seems to be another problem. I just tried turning off fast tape loading under CoCo 2 emulation with "-no-tape-fast" on the command line, and now it won't load a BASIC program from virtual (.cas) cassette.

I have attached the BASIC program for test purposes.

EDIT: Attachment removed.

Ok that one was simple enough - seems like the CoCo needs more leader bytes to sync up. I've modified the threshold where "-tape-pad-auto" takes effect.

As for CRCs determining behaviour being crazy... Well, I'm always trying to judge what the best default behaviour should be - as in, what would cause least annoyance to someone who hasn't yet read the manual (principle of least astonishment). I think it's a good default not to break if a custom ROM is custom enough that the entry points are different. And I needed a way to discriminate anyway - the different versions of the Color BASIC ROMs for the CoCo vary in that way quite a lot.

However, this snapshot includes the ability to "alias" new CRCs so they're thought of as effectively the same as some known ROM, and the last versions I could find of the Woolham ROMs (2.2 for Dragon 32, 3 for Dragon 32 & 64) are included in that list.

As a last resort, I've added the "-force-crc-match" option. This will force it to think that any ROM loaded is Dragon 32 BASIC, Dragon 64 BASIC or Color BASIC 1.3 depending on emulated architecture.

sixxie wrote:However, this snapshot includes...

Sixxie, it would have been helpful if you had labelled the revised snapshots as xroar-snap-20120507-b-[machine platform and extension], or similar, to help differentiate them from the versions you posted earlier today. It was only by looking at the time stamp that I realised that these were a different version to that which I had downloaded earlier today (and which I have still not checked, but then I'm using 32-bit XP so I'm not going to be much help in testing the 64-bit release).

sixxie wrote:As a last resort, I've added the "-force-crc-match" option. This will force it to think that any ROM loaded is Dragon 32 BASIC, Dragon 64 BASIC or Color BASIC 1.3 depending on emulated architecture.

It makes things a little more complicated, but that's a nice compromise. Thanks!

Regards,
Steve