delvis Posted October 9, 2021 Share Posted October 9, 2021 https://www.ebay.co.uk/itm/SD4ST-Mini-hard-disk-HDD-interface-for-Atari-ST-STE-2x-micro-SD-SDcard-RTC-/154640759131?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0&fbclid=IwAR1v5jqGiJO7NMrKjXHe-yqEcgdfEAM8CMrAzbVPLRY2rur-6UEhf6cU-pE SD4ST Mini hard disk HDD interface for Atari ST STE 2x micro SD SDcard+ RTC Is this device the same as the ACSI2STM? Quote Link to comment Share on other sites More sharing options...
snarkdluG Posted October 9, 2021 Share Posted October 9, 2021 It seems so. It is based on the "blue pill" board and so do ACSI2STM project. If they run the same code on the blue pill, I don't know. Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted October 9, 2021 Share Posted October 9, 2021 No way that is same as ACSI2STM. Most likely it is UltraSatan in different case, form. At least 2 SD slots and RTC suggesting it. Quote Link to comment Share on other sites More sharing options...
snarkdluG Posted October 9, 2021 Share Posted October 9, 2021 Doesn't look anything like an US inside: Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted October 9, 2021 Share Posted October 9, 2021 Board revision is not same, of course. And we had already 2 of them, before this, or maybe more ? Anyway, should check with SW by Jookie - like one for setting ACSI target numbers for 2 SD cards, setting/reading RTC. Quote Link to comment Share on other sites More sharing options...
Vulcanman Posted October 24, 2021 Share Posted October 24, 2021 I bought one of these, and I'm using the ICD Pro drivers with it. It's certainly faster then my old scsi drive. I'm just waiting for a manual for it to come out, the documentation on the home site is sparse at the moment. Regards 1 Quote Link to comment Share on other sites More sharing options...
masteries Posted October 25, 2021 Share Posted October 25, 2021 On 10/9/2021 at 5:29 AM, delvis said: https://www.ebay.co.uk/itm/SD4ST-Mini-hard-disk-HDD-interface-for-Atari-ST-STE-2x-micro-SD-SDcard-RTC-/154640759131?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0&fbclid=IwAR1v5jqGiJO7NMrKjXHe-yqEcgdfEAM8CMrAzbVPLRY2rur-6UEhf6cU-pE SD4ST Mini hard disk HDD interface for Atari ST STE 2x micro SD SDcard+ RTC Is this device the same as the ACSI2STM? Yes, its an ACSI2STM but in an expensive way... of course, it have a RTC clock. As many know this is cheaper and does the same, also with worldwide shipment and technical service if needed : 2 Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted October 25, 2021 Share Posted October 25, 2021 (edited) On 10/24/2021 at 9:45 AM, Vulcanman said: It's certainly faster then my old scsi drive. Care to run one of the benchmark programs on it? I'd be curious as to the results. I've got a couple of Ultrasatan's here, both internal and external. They are great devices but I don't think either of them will match the speed of the 4gig SCSI hard drive I have with my Mega ST4... Thanks. Edited October 25, 2021 by DarkLord Quote Link to comment Share on other sites More sharing options...
zibi Posted October 25, 2021 Share Posted October 25, 2021 (edited) http://sd4st.uk.to/benchmarks/ The page has not yet been indexed by google so its difficult to find. More info there, also contact form. Page Still under construction. Read 870kb/s Writes 500kb /s I think USatan has about 1200kb so its pretty close. Edited October 25, 2021 by zibi typo Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted October 26, 2021 Share Posted October 26, 2021 That's actually quite a bit of difference. Neither figure approaches SCSI results...at least none of the tests I've seen or done... Interesting point - the Falcon's IDE stuff actually goes faster the faster the machine does. When I added the CT60 to mine, the hard drive benchmarks jumped. Thanks for the tests. Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted October 26, 2021 Share Posted October 26, 2021 I was just curious (and to make sure I was remembering things correctly), so I went back and ran the transfer rate app on my devices... I used it on the internal and external Ultrasatan devices that I have in my Mega STe and STacy. Using 2 gig and 4 gig SanDisk cards, they averaged just under 1000kb/s, at around 960. For some reason, the 2 gig card was always just a little bit slower than the 4 gig card. The Mega STe is using Lotharek's Mega STe ACSI adapter and the STacy is using Alan H.'s ACSI adapter. I also ran it on the 4 gig SCSI hard drive used by my Mega ST4. It was faster at around 1560kb/s. This machine is using ICD's Link 2. All devices were using HDDriver. Anyway, just some random comparisons. Quote Link to comment Share on other sites More sharing options...
zibi Posted October 26, 2021 Share Posted October 26, 2021 Dark Lord - heh you have I guess some ultimate setup. Your information is very usefull at least for me. in my case 870kb comparing to 'real world' case on ultrasatan 960 its not that far away. (I am personally satified with this at least its a good start taking into account that the CPU speed in SD4ST, actually clock speed is 4-5x slower, than on US. obviously its a very poor simplification but at least puts some perspective ). Could you put a little bit more light or anyone on forum, what would be the fastest observed speed on 'common' Atari hardware. By common I mean, lets say : Atari STE TOS2.06 ACSI interface (4MB common CPU no upgrates) - I am trying to estabilish some baseline, reference (& target);] what is the best seen speed and which device is it ? is it fair to say that the 1560kb/s on ICD's Link 2 is achievable on ste206? maybe there is something faster than that? Thanks, Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted October 27, 2021 Share Posted October 27, 2021 The higher speeds with SCSI disks are not because it is SCSI. For instance, if you connect some very fast SCSI drive to Mega STE internal SCSI adapter (and I have some which can over 10 MB/sec) will get max about 1000 KB/sec. In other words, ACSI-SCSI adapter can limit speed to less than what SCSI drive or DMA chip in Atari can. And of course, same stays for ACSI-SD adapters. Modern SD cards can really high speeds, 20 MB/sec is now normal. DMA chip in ST, STE, TT can max 2 MB/sec in peak. And there are some adapters which can go close to it: my ACSI-CF adapter, and here was announced too ACSI-SD what will be able to similar speed. All it is matter of design, used chips and firmware in adapter. Remember, Satandisk can only some 150 KB/sec . I'm sure that this new competition in ACSI-SD adapter design/offer will result sooner or later in reaching that ~2 MB/sec . 1 Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted October 27, 2021 Share Posted October 27, 2021 9 hours ago, ParanoidLittleMan said: I'm sure that this new competition in ACSI-SD adapter design/offer will result sooner or later in reaching that ~2 MB/sec . And that's a good thing! 1 Quote Link to comment Share on other sites More sharing options...
delvis Posted October 28, 2021 Author Share Posted October 28, 2021 I just tested my Mega system using Alan H.'s IDE internal card. Logical drive C 1245 KB/s Access time 4.6ms Direct HW Access 1379 KB/s Access time 1.0ms Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted October 28, 2021 Share Posted October 28, 2021 Hmm, I've been using xtransfer to check. Methinks I need to try Peters's software and see if it reports a difference... Quote Link to comment Share on other sites More sharing options...
Chri O. Posted October 29, 2021 Share Posted October 29, 2021 On 10/26/2021 at 6:49 PM, zibi said: Could you put a little bit more light or anyone on forum, what would be the fastest observed speed on 'common' Atari hardware. (post#12) Definitely not more than 2,000KB/s around 1800 - 1850KB/s, maybe with super short wiring and perfect conditions about 2,000KB/s. PS note: I believe Atari ST series ACSI DMA needs 4 cycle of the CPU for accessing the dma channel @ 8MHz / 4 = 2MHz. Quote Link to comment Share on other sites More sharing options...
zibi Posted November 2, 2021 Share Posted November 2, 2021 On 10/24/2021 at 2:45 PM, Vulcanman said: I bought one of these, and I'm using the ICD Pro drivers with it. It's certainly faster then my old scsi drive. I'm just waiting for a manual for it to come out, the documentation on the home site is sparse at the moment. Regards Hi Vulcanman, The page is steadely growing. I think more or less I know what is needed. What would be usefull is what you would expect to see, this would help me with my priorities. Could you drop me message on PW (you can use page form if you dont have my email). Thanks, Zibi Quote Link to comment Share on other sites More sharing options...
Vulcanman Posted November 10, 2021 Share Posted November 10, 2021 Hi Darklord, sorry for the delay in replying. ICD Rate HD V3.09 - 851KB/s 2 ms AHPT94 - 834 KB/s 10.7 ms Regards Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted November 11, 2021 Share Posted November 11, 2021 No problem - thanks! Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted November 11, 2021 Share Posted November 11, 2021 22 hours ago, Vulcanman said: Hi Darklord, sorry for the delay in replying. ICD Rate HD V3.09 - 851KB/s 2 ms AHPT94 - 834 KB/s 10.7 ms Regards When you post results of tests with my program AHPT94 should mention which way it was done. Because there are 2 ones: left is raw disk speed test, with direct access to hard disk or Flash card (adapter). Other is via hard disk driver and filesystem in TOS. And of course second way will give less transfer rate, slower access times, because then it goes via FAT16 filesystem, what means not so direct access to storage. By results you posted, it is pretty sure that it was done second way. 1 Quote Link to comment Share on other sites More sharing options...
Vulcanman Posted November 12, 2021 Share Posted November 12, 2021 On 11/11/2021 at 9:54 AM, ParanoidLittleMan said: When you post results of tests with my program AHPT94 should mention which way it was done. Because there are 2 ones: left is raw disk speed test, with direct access to hard disk or Flash card (adapter). Other is via hard disk driver and filesystem in TOS. And of course second way will give less transfer rate, slower access times, because then it goes via FAT16 filesystem, what means not so direct access to storage. By results you posted, it is pretty sure that it was done second way. So I've re-done the test using the ACSI selection, with the transfer rate now at 891 KB/s, and access time at 1.3 mS. Is there a help file for using your programme? Hope this helps. Regards Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted November 12, 2021 Share Posted November 12, 2021 Instructions are here, together with DL of program: http://atari.8bitchip.info/ahpt.html Quote Link to comment Share on other sites More sharing options...
Vulcanman Posted November 12, 2021 Share Posted November 12, 2021 27 minutes ago, ParanoidLittleMan said: Instructions are here, together with DL of program: http://atari.8bitchip.info/ahpt.html Thanks for the info. Regards Quote Link to comment Share on other sites More sharing options...
Vulcanman Posted November 24, 2021 Share Posted November 24, 2021 (edited) Hi zibi, how do you bypass the SD4ST without disconnecting the power supply or the unit itself? This is the information that would go in a user manual. Regards Edited November 24, 2021 by Vulcanman Quote Link to comment Share on other sites More sharing options...
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