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Author Topic: Question - Minimig SD card  (Read 5761 times)

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Offline wolfchild

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Re: Question - Minimig SD card
« Reply #14 from previous page: May 15, 2009, 07:57:31 PM »
Quote

Gavilan wrote:

Erm...maybe you meant www.minimig.net ???


Yes, yes that's it ;-)  

My mistake there.  The pre-order thread is here:

The ARM Board Preorder
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
self-built minimig 1.1 :: 10ns SRAM :: 3.5MB RAM::ARM board::2GB SD card
VGA -> SCART cables currently available - PM me to order.
 

Offline Piru

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Re: Question - Minimig SD card
« Reply #15 on: May 15, 2009, 08:54:27 PM »
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It's not hardcoded, the number of root directory entries is read from the boot sector. Should work with any valid number. The default value for FAT16 volumes is 512 and most common formatting utilities do not allow to change it.

But linux format tools specifically allow this, so why not give it a try?

Since most users are indeed limited by the actual number of the directory entries it would seem wise to try it. Say with 2GB SD mkfs.vfat ... -r 2400 ... this should allow use of the whole disk capacity for ADFs.
 

Offline freqmax

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Re: Question - Minimig SD card
« Reply #16 on: May 16, 2009, 02:05:01 AM »
"is there anything possible which can be done in the future to resolve this issue?"

Ethernet .. ;)


One possibility with the boot MCU (PIC18xx) with limited memory is to load code for supporting subdirectories etc.. form the disc itself. Kind of like Compaq BIOS.
The only thing that the MCU must execute is configuration of the FPGA and KS+WB load. The rest could possible be arranged in other ways.

I hope it's possible to load code into the MCU ram and execute.
 

Offline mikej

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Re: Question - Minimig SD card
« Reply #17 on: May 16, 2009, 11:01:58 AM »
The new ARM software for the Replay board I am working on with   Jakub has new filesystem code. This supports folders, long filenames and FAT32.

best,
/Mike
 

Offline tasmanian guy

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Re: Question - Minimig SD card
« Reply #18 on: February 11, 2013, 08:31:32 PM »
My minimig has a 4 gigabyte card in it with a 1.5 gigabyte hdf file.
 
What is the maximum size hdf file that you can have on the Minimig, 2 gigabytes I assume with fat16?
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