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Ultimate 1mb / Side 2


lotharek

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Damn - this is one of the nicest looking cart cases I've ever seen, and one of the few I don't mind seeing poking out of the top of an 800XL:

 

post-21964-0-21098000-1362515003_thumb.jpg

 

Got mine couple of days ago too - real nice stuff. I was kind of hoping it could fit into 1200xl but it does not. Maybe some internal version in the future could solve that :)

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Got mine couple of days ago too - real nice stuff. I was kind of hoping it could fit into 1200xl but it does not. Maybe some internal version in the future could solve that :)

 

This problem still causes me much angst. However, the tolerances are slight: I think 1mm expertly shaved off either side of the cartridge tunnel would solve it.

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Very small bug-fix for Ultimate 1MB and Incognito PBIs:

 

http://www.atari8.co.uk/apt/u1mb/

 

http://www.atari8.co.uk/apt/incognito/

 

Boot partition wasn't set properly after a warm reboot. Fixed.

Jon what would cause SDX446 FORMAT program to see my partitions as disk drives instead of hard drives, since updating the PBI rom. Also the CLX program refuses to cleanup any partitions return an error like this:

CleanUp X v.1.9, © 2012 DLT

Sector count: 0

Bytes/sector: 255

Unsupported disk or sector size.

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Jon what would cause SDX446 FORMAT program to see my partitions as disk drives instead of hard drives, since updating the PBI rom. Also the CLX program refuses to cleanup any partitions return an error like this:

CleanUp X v.1.9, © 2012 DLT

Sector count: 0

Bytes/sector: 255

Unsupported disk or sector size.

 

Percom command would cause that, and this is what was comprehensively broken in the 0.3.3 ROMs. I've updated both U1MB and Incognito PBI ROMs to fix this. Apologies, and thanks for spotting this. Seems all the responsibility for field testing this stuff ends up on your shoulders somehow. ;)

 

Anyway: I'd regard this as a critical update:

 

http://www.atari8.co.uk/apt/u1mb/

 

http://www.atari8.co.uk/apt/incognito/

 

could anyone get the side loader to boot Atr s after upgrading this?

 

Still working fine here with MATR and the SIDE loader. Yesterday's change to boot drives simply meant that - say - if you set the APT partitions so that the machine boots from drive 3, it will continue to do so until the XEX loader mounts a disk on drive 1 and forcibly changes the boot drive. Older versions of the XEX loader may not have done this, so ensure you're using the most current.

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FDISK.COM for non-SDX users re-uploaded here:

 

http://www.atari8.co.uk/apt/tools/

 

Note: this tool is undergoing a refit at the moment, and the new version will be somewhat more powerful.

Jon, what is the optimal APT size for 13 partitions I tried to figure out the math but some is probably lost in partition prep.. and partition map.

This figured at 512bps and 65535 sectors per partition.

The reason I ask is that I mostly get some unallocated space..

Edited by rdea6
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There's a 1 sector overhead for each partition (for the meta-data area, which stores the partition's name), plus the space needed for the partition table itself (1 sector in the case of 13 partitions). So:

 

(65535+1) * 13 = 851968 sectors... plus 1 sector for the APT header = 851969 sectors.

 

By my reckoning, that's 425984.5KB, or just over 416MB. Please correct me if I'm wrong, someone. ;)

 

Note also that FDISK places MBR partitions on cylinder boundaries for backwards compatibility with older PC operating systems, so you'd need to take that into account too.

 

Normally when splitting - say - a 1GB card, I just go half and half, i.e. 512MB FAT, 512MB APT.

 

What I'd like to do when I get time is equip FDISK to edit the entire MBR. Your primary (FAT) partitions would then be visible, with any extended (logical) partitions indented, and likewise the APT partitions indented under the "APT" entry ($7F) in the MBR. You'd then be able to make as many FAT partitions as you like, and it would be somewhat easier to create external links from inside the APT to FAT32 partitions in the MBR. Visually representing these links (basically the same partition entry appearing twice on the disk) is still a bit of a headache, though.

 

All this wouldn't be necessary if Windows didn't make it so difficult to partition removable media. I understand Linux users can do this quite easily using GPARTED or similar. It would then simply be a case of putting as many FATs as you like on the card, and also defining one $7F entry, when the APT is housed.

Edited by flashjazzcat
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I found this link:

http://www.jameco.co...ogDrillDownView

 

It seems that this is the product we would like.

Product seems available...

 

Can't find the 20 pin variety on that site, nor indeed any site which sells both 20 and 28 pin versions. Anyone able to find both at RS, Mouser, Farnell, Rapid, etc. ???

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