A new bootable low cost Hard Disk interface compatible with Atari ST family computers,
firmware is refined compared to original one;
and tested on a 520ST TOS 1.04, 1040STFM TOS 1.04, 1040STE TOS 1.06, 1040STE TOS 1.62 and 1040STE with TOS 2.06; with ok results.
Results: The ACSI2STM works perfectly; such example loading the 3.5 MB size of current Metal Slug port takes around 12 seconds (aprox. 300 KB/s).
Tested against old SD cards, such 1 GB card; 4 GB SDHC and 8 GB SDHC. All these are detected and works correctly!
Operation video,
Writing and reading from the hard disk interface:
On the last video, a game running from hard disk is shown; with "/" key, a savestate is created. After successful hard disk file writing, the game is closed pressing "*" key, and the STE system returns to desktop. A copy of the generated GS00.TOS file is created, renaming it to GS01.TOS; finally the game is resumed loading the copy of the savestate, GS01.TOS . All these operations are performed correctly.
Some images and photographs:
Attachment 164436
Attachment 164437
This is the prototype device, final version do not have airwires
Attachment 164438Attachment 164439Attachment 164440
Attachment 164441
Performance & micro SD card compatibility testing:
micro SDHC 8 GB
Attachment 164443
micro SDHC 4 GB
Attachment 164442
micro SD 1 GB
Attachment 164442
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The bootable hard disk image (DOS & TOS compatible, readable on Windows), can be obtained from atari 8 bit chip ( name: DiskImgPP1 ), or ask when you buy;
You can use Win32DiskImager (Windows) in order to write it.
The ST / STE with a hard disk is another world!
Each unit is completely built and tested,
price is 32€ + tracked shipment (5.50€ for Spain or 8€ for Europe; 9€ for America, Canada, EE.UU. and Japan).
Lower cost and better SD card compatibility than any Satan disk, and much lower price than UltraSatan.
Its the Atari ST hard disk suitable for the masses,
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An update, about tested micro SD card brands and types:
-Micro SD cards that work ok:
Sandisk de 1 GB
Kingston 8 GB class 4
Kingston 4 GB class 4
Intenso 8 GB class 4
Intenso 16 GB class 6
Intenso 4 GB class 10
Intenso 8 GB class 10
Kingston 16 GB class 10
Sandisk 16 GB class 6
-Micro SD cards that do not work:
Cloudisk 512 MB
No brand 4 GB
MediaRange 8 GB class 10
Sandisk 32 GB class 10 UHS 1 (most probably any UHS 1 will fail, due to these reject to operate in 1 bit mode)
Briefly, Sandisk, Kingston and Intenso are the preferred ones