+MrFish Posted April 17, 2020 Share Posted April 17, 2020 I came across this in the Atari FAQ while researching the Supra Hard Drive / Interface. Can anybody verify the Miniscribe as the 20 MB 3.5" version that was sold? (Oddly enough, I used to own that exact Miniscribe disk, which came in a Mac Classic II I used to have.) - SupraDrive Atari Hard Disk system includes: - SupraDrive AT hard disk drive, one of - 10MB drive = Xebec 4000 / Xebec Owl (5.25" SASI) - 20MB drive = Miniscribe 8425S (3.5" SCSI) (can anyone verify this????) Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 17, 2020 Author Share Posted April 17, 2020 Apparently, according to this page from their '88 catalog, they were also selling 30 and 60 MB versions of the 8-bit kit. 1 Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted April 17, 2020 Share Posted April 17, 2020 I bet that cost a small fortune.. Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 17, 2020 Author Share Posted April 17, 2020 The 10 MB version was $799, in 1986. SupraDrive for 8-Bit Ataris (Antic: Oct '86) Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 17, 2020 Author Share Posted April 17, 2020 The 20 MB version was going for £749.95 -- across the pond -- in 1987. Supra's Hard Disk for XL/XE (Page 6: Sept/Oct '87) Quote Link to comment Share on other sites More sharing options...
evilmoo Posted April 17, 2020 Share Posted April 17, 2020 Is there a PBI ROM dump for the SupraDrive around somewhere? Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 17, 2020 Author Share Posted April 17, 2020 (edited) I've got all these. I've also got the support disks. Supra HD Interface (10MB) [81C25052].rom Supra HD Interface (20MB - question) [DB2C9217].rom KP HD Interface [2C5AF8AA].rom KP HD Interface (My) [3D1D01EC].rom The last two are K-Products, which is the same interface. The last one, I think, is a customized version (I'll have to check details in the thread I got it from). Edited April 17, 2020 by MrFish 6 1 Quote Link to comment Share on other sites More sharing options...
evilmoo Posted April 17, 2020 Share Posted April 17, 2020 3 minutes ago, MrFish said: I've got all these. I've also got the support disks. Thank you very much. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted April 17, 2020 Share Posted April 17, 2020 There is also a 3rd party interface for the Supra Drive, saw it on ebay 2 years ago for $25, but didn't pull the trigger. Doh! It has a black case. Have a pic of it on my XP PC, but need to replace the PS again first before I can post it... Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 17, 2020 Author Share Posted April 17, 2020 (edited) 8 minutes ago, AtariGeezer said: There is also a 3rd party interface for the Supra Drive, saw it on ebay 2 years ago for $25, but didn't pull the trigger. Doh! It has a black case. Have a pic of it on my XP PC, but need to replace the PS again first before I can post it... Sounds interesting. I've only seen the K-Products version. Edited April 17, 2020 by MrFish 1 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted April 18, 2020 Share Posted April 18, 2020 Although I've never used one of these, I recall they had the hard drive parameters/geometry baked into the ROM and not user configurable, so every different hard drive would have needed a customized ROM/EPROM. @MrFish's post with with actual ROM dumps seems to align with this with sizes in the file names. I'm curious if the last two "KP" firmware's have anything substantially different code wise, or if they are indeed only changes in drive geometry and probably renaming to K-Products if that shows onscreen anywhere. Would also be neat to check the marketing performance claim of 8-10,000 bytes per second. May be better with SpartaDOS since the ad mentions MyDOS. I don't seem to have a screenshot of RWTEST results from my MIO+real hard drive handy to compare... Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 18, 2020 Author Share Posted April 18, 2020 (edited) Yeah, that's what I had read in the thread where the KP ROM's were posted -- about setting up parameters for each drive in the ROM's. They may well all be just that (same code/version with different drives specified). As far as the one with "20 MB" on it, I also put "question", as I was guessing/wondering if it were the case that it's for a 20 MB drive. The 10 MB drive ROM came with that info in the filename; so, pretty safe to assume it's right. I didn't have time yet to examine it, but this source file will answer a lot of questions -- if you feel like checking it out. It gives specifics about the format used and together with it, we should be able to determine what each of these ROM's are. MYROMTBL.LST.txt Edited April 18, 2020 by MrFish Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 18, 2020 Author Share Posted April 18, 2020 Here's the starting point for examining the ROM's: 0210 ; The ROMWCB table starts at an 0220 ; offset of $0700 from the 0230 ; start of the EPROM. The 0240 ; LOGDEV table starts at $0740. Quote Link to comment Share on other sites More sharing options...
BillC Posted April 18, 2020 Share Posted April 18, 2020 38 minutes ago, Nezgar said: I recall they had the hard drive parameters/geometry baked into the ROM and not user configurable, so every different hard drive would have needed a customized ROM/EPROM. Same thing had to be done with early PCs when installing a larger HDD. Quote Link to comment Share on other sites More sharing options...
doctor_x Posted April 18, 2020 Share Posted April 18, 2020 great images to add to the archive.. I had never seen the actual interface before - just the drive enclosure. Thanks! 1 Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 18, 2020 Author Share Posted April 18, 2020 Here are some better ones of the Supra interface. 4 Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 19, 2020 Author Share Posted April 19, 2020 (edited) On 4/17/2020 at 1:45 PM, MrFish said: I've got all these. I've also got the support disks. Supra HD Interface (10MB) [81C25052].rom 4 kB · 10 downloads Supra HD Interface (20MB - question) [DB2C9217].rom 4 kB · 9 downloads KP HD Interface [2C5AF8AA].rom 4 kB · 8 downloads KP HD Interface (My) [3D1D01EC].rom 4 kB · 10 downloads The last two are K-Products, which is the same interface. The last one, I think, is a customized version (I'll have to check details in the thread I got it from). On 4/17/2020 at 10:24 PM, MrFish said: Here's the starting point for examining the ROM's: 0210 ; The ROMWCB table starts at an 0220 ; offset of $0700 from the 0230 ; start of the EPROM. The 0240 ; LOGDEV table starts at $0740. Compared all four ROM's; and the Supra 10MB and the two KP ROM's were all identical aside from the data which starts in the drive parameter tables, from the $0700 offset. There was also a difference at the end of the two KP files (same in both KP files) of 9 bytes, compared to the Supra 10 MB one, in a large area that was $FF 'd in all three files, otherwise (completely $FF 'd in the Supra 10 MB ROM). But the other Supra ROM (marked as 20 MB ?) looked to be vastly different from the others. I'll have to see if I can track down where that one came from; and whether there's any other info about it. Edited April 19, 2020 by MrFish Quote Link to comment Share on other sites More sharing options...
evilmoo Posted April 19, 2020 Share Posted April 19, 2020 The 20MB ROM has this as the end: "COPYRIGHT BY JIM WHITE AND SUPRA CORPORATION (c)1985 092385" Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 19, 2020 Author Share Posted April 19, 2020 Yes, I saw that too. Quote Link to comment Share on other sites More sharing options...
+Larry Posted April 19, 2020 Share Posted April 19, 2020 Nice pics and docs! A little trivia... I had one of these Supra interfaces that I picked up at a Detroit Atari Show (1987?). I bought it from ICD for next to nothing as they had gotten one to compare to their MIO. It was crude, IMO, when compared to the MIO. Bob Klas gave me the rom files after he got the rights to these from what was left of Supra. He had plans to update the interface, but it never happened that I know of. I doubt that I still have the files. I finally gave the interface away to another user here who hasn't posted for years. Hope he's still kicking. Quote Link to comment Share on other sites More sharing options...
evilmoo Posted April 19, 2020 Share Posted April 19, 2020 39 minutes ago, MrFish said: Yes, I saw that too. That was meant for general consumption, on the off chance that someone knows this particular Jim White. Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted April 20, 2020 Share Posted April 20, 2020 14 hours ago, Larry said: Nice pics and docs! A little trivia... I had one of these Supra interfaces that I picked up at a Detroit Atari Show (1987?). I bought it from ICD for next to nothing as they had gotten one to compare to their MIO. It was crude, IMO, when compared to the MIO. Bob Klas gave me the rom files after he got the rights to these from what was left of Supra. He had plans to update the interface, but it never happened that I know of. I doubt that I still have the files. I finally gave the interface away to another user here who hasn't posted for years. Hope he's still kicking. I have some Supra files, if anybody is looking for them. Bob 2 Quote Link to comment Share on other sites More sharing options...
evilmoo Posted April 20, 2020 Share Posted April 20, 2020 10 hours ago, bob1200xl said: I have some Supra files, if anybody is looking for them. I am interested in whatever you happen to have. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 20, 2020 Author Share Posted April 20, 2020 10 hours ago, bob1200xl said: I have some Supra files, if anybody is looking for them. Please do. I went through what I have, and it looks like they're all K-Products supports files/disks. I'll post them soon, but I just wanted to finish sorting through them first; so I'm not just posting of pile of unorganized and/or redundant material. If anybody has documentation for any of these kits, it would be nice to have copies of them. I haven't found anything yet, except the text files that come with the K-Products materials. Quote Link to comment Share on other sites More sharing options...
+MrFish Posted April 20, 2020 Author Share Posted April 20, 2020 Alright, here's what I have for support disks so far. The Supra images are 130 KB MyDOS from a double-sided disk and have a text file notice from Bob Klaas/K-Products. I can't get either of these to boot, but the files are accessible. The K-Products disk is 720 KB MyDOS 4.50 and may contain everything that's on the two Supra images. They also have more files specific to later K-Products hardware. The disk is bootable. Supra - MyDOS A.atr Supra - MyDOS B.atr K-Products - MyDOS 4.5.atr Quote Link to comment Share on other sites More sharing options...
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