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Minimig core crushes Workbench 3.1 Install Disk #32

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Create empty hardfile and mount it
2. Boot MiST from Workbench 3.1 (Install) Disk
3. Partition hard drive with HDToolbox
4. Reboot the virtual Amiga after partitioning
5. Amiga throws checksum error at around block 885 of Workbench Install Disk

What is the expected output? What do you see instead?
Simulated Amiga reboots fine and doesn't throw an error on Workbench Disk 1. I 
tested the same empty hard file and the same ADFs on the latest WinUAE - no 
problems at all.

What version of the product are you using? On what operating system?
Latest Firmware and core
Kickstart v3.1 r40.63
Workbench 3.1 (tested with Commodore and ESCOM disk sets)
HDF created by latest WinUAE and a zeroed file

Please provide any additional information below.
I attached the working ADFs and the ADFs after using them in MiST. Maybe 
someone might find out what went wrong. My SD-Card is working, I checked it 
using h2testw. Saving on floppy images generally works, I could save and load a 
game on it's save disk.

Original issue reported on code.google.com by LSerraM...@gmail.com on 17 Apr 2015 at 5:36

Attachments:

GoogleCodeExporter commented 9 years ago 
Addition to "What is the expected output? What do you see instead?"

What I see: After the forced reboot after partitioning and booting from the 
Workbench Install Disk again, I get an error message regarding checksum errors 
in Blocks 882-890. The Disk boots fine, but it's directory is empty. The 
partitions in the hard file can be formatted, no problem on that side. I 
checked the exact same disk images on WinUAE doing the exact same steps, even 
using the same labes for Disk manufacturer etc. The error does not show up on 
WinUAE.

Original comment by LSerraM...@gmail.com on 17 Apr 2015 at 5:45

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
It seems that the MiST is somewhat unreliable when writing to the disks. My 
Cloanto images worked first, but after copying a few files to the image, it 
started to throw checksum errors again (block 1100 and up).

I tested with another SD card from a differend brand, same issue.

Original comment by LSerraM...@gmail.com on 17 Apr 2015 at 9:05

GoogleCodeExporter commented 9 years ago 
I could recreate this problem on my MiST. Also did get the CRC Problems after 
using this ESCOM Install 3.1 Disk. After pressing Cancel some times the MiST 
did freeze and after an additinal reset the MiST blinks red and the Filesystem 
of the SD-Card is totally corrupted :( On the PC the SD seems then to be 
unformated.

Original comment by guido.le...@gmail.com on 17 Apr 2015 at 4:59

Attachments:

GoogleCodeExporter commented 9 years ago 
Somewhat good news: I tried to copy the floppy image using Xcopy via the 
BAMCOPY+ method. According to DMS-Workshop, both files have the same CRC32 - so 
the writing engine is not generally broken.

However, still no clue why it seems that the MiST overwrites some parts of the 
disk instead of stopping when the disk is full. 

It also seems that MiST is not that accurate in the emulation of the floppy 
disk speed. I tested the MiST with the "Ami..Alignment System" test disk and 
get an average 320RPM instead of the 300RPM the drive should have according to 
Wikipedia. WinUAE averages at 303-305RPM. Read and write speeds also differ: 

MiST: 6631 bytes/s write, 19944 bytes/s read
WinUAE: 4922 bytes/s write, 13900 bytes/s read

MiST and WinUAE use the same configuration and run on the same Kickstart 
versions. Of course I set WinUAE to highest accuracy and disabled the drive 
turbo in MiST. I'm emulating a PAL OCS A500.

I know that WinUAE is not a proper way to get reference measurements for 
hardware specific stuff, but I think we can see that there's quite a difference 
between the emulator and MiST.

Original comment by LSerraM...@gmail.com on 19 Apr 2015 at 8:02

GoogleCodeExporter commented 9 years ago 
Bug also appears on minimig AGA beta core.

Original comment by LSerraM...@gmail.com on 20 Apr 2015 at 5:11

GoogleCodeExporter commented 9 years ago 
Hi, any updates?

Original comment by LSerraM...@gmail.com on 23 May 2015 at 7:33