It's been trained on MBA presentations. "Tell 'em what you're going to tell 'em, then tell 'em, then tell 'em what you told 'em. Three different ways."

Neil

I believe this may hunt down a crocodile or two... I still need to test it, and before that, think about _how_ to set things up with that damn edge case.

Here's the idea: I have a DIR_ENTRY structure (which will probably be fixed ZP locations when I convert to assembly).

typedef struct {
uint32 ...

In Which Our Hero Discovers His Secret Name May Be Claude

While looking into the issue around creating files and directories, a couple of issues raised their crocodilian snouts from the murky Slough of Despond, and started to look at our hero with hungry eyes.

Crocodile One: Allocating New ...

Easy. All you need is 600nm fabrication factory

Neil

It gets better. We _note_ that first second, as hundredths of a second counting 0-199, in a variable named by MS 'tenths'.

The pellet with the poison's in the flagon with the dragon, the vessel with the pestle has the brew that is true.

So, after today I can create new files in my linux/c dev ...

Standards? We've heard of 'em. Currently working in the C domain under linux, which has proven handy to do some refactoring, and with the advantage that I can test code on a file image mounted so the linux file handlers can complain directly when I get it wrong.

Linux time, and the variant FAT32 ...

Has there ever been any doubt about this?

Neil

Thanks for the recommendation.

Neil

Just for the record: to copy a formatted _complete_ disk image to a file:

$ sudo dd if=/dev/sda of=cleanfmt bs=4096
125118+0 records in
125118+0 records out
512483328 bytes (512 MB, 489 MiB) copied, 53,8369 s, 9,5 MB/s

That includes all the data on the original disk - the MBR, the partitions ...

At the moment, I'm trying to mount an image of the file in loopback, so I can play with C algorithms and see the results immediately in the browser. However, while I can mount it, Linux insists it belongs to root and I'm not allowed to change permissions, which is a bit of a shame.

Neil

That's exactly my next thought, though I think I shall reduce the size of the partition to the minimum that will format as FAT32, to keep the size manageable.

Turns out that trying to use hexedit on multi-megabyte files is, um, a bit tedious.

Neil

Nope... wasn't that. Though I did discover previous testing on the timer interrupt had left it running at 50 times normal speed...

Neil

Still confused... I have proven to my satisfaction that both procedures are using the same cluster # -> sector calculation.

format partition (linux)
copy directory into root (linux)
copy file into new directory (linux)
read file data (6502) - directory (cluster 3) shows dot, dotdot, and file ...

If I am correctly following you, you are formatting the CF card with FAT32 on your Linux box, creating a subdirectory named DIRECT00 , and then attempting to read the root directory on your 6502 machine. Is that correct?

Upside down, BDD. I'm trying to create DIRECT00 on a freshly formatted CF ...

My head is really getting bent out of shape now; I cannot see what I am missing.

With a newly formatted disk, no files added, this is what I see from the various parameter blocks:

NeoDOS32 v0.0411
VIB sector $00000800
FSI sector $00000801
Sectors in partition $000EA000
Sectors per cluster $08 ...