Blogs

All members are invited to blog on Applefritter. Weblogs should generally be of a technical nature and should be written in such a way as to still be readable and useful 50 years from now. Please do not embed outside media. Images and videos can be uploaded via the Media Browser. Files should either be attached to the blog post or uploaded to the file libraries.

When you post to your blog it will appear on this index and on your personal blog page. Once you've made a few posts, contact me about having a graphic added on the top of this page.

InDesign weirdness

Submitted by tachyon on August 15, 2006 - 4:55pm

The most helpful error message is:

"Internal Error"

What are you supposed to do now?!

Moving to the end

Submitted by glb_gtz on August 7, 2006 - 11:28pm

Now that I have the boot issue fixed, I am working on the floppy. I have it mostly working. I am able to use FILER to format the two drives. I am also able to store data on the drives. I can run programs from them. I can even use Copy II Plus bit copy and copy one disk to the other. But a few things still are not right. The first issue is booting from the drive. I can do a PR#6 and it will go to track 0, then it moves the head to track 1. I assume it read the boot blocks and is looking for PRODOS. I am having an issue with Copy II Plus also.

Smoking Gun for sure

Submitted by glb_gtz on July 30, 2006 - 1:05pm

Finally the debug effort is finished. I traced the no boot issue to a bug in ProDOS. This error exists in both ProDOS version 1.2 and 1.9. But I see it has been fixed in version 2.0.1. I just need to do a work around in my ROM code to make sure I do not trigger this bug. Then I can continue firmware development of the Serial Virtual Drive. When I get this working, the floppy is the next task. I have done some testing on the floppy and I believe it is working. But the final test will be to load a DOS 3.3 image into the RAM and try to boot from the floppy. If it works, then it is party time.

Pages

Subscribe to RSS - blogs