It is very-very slow - file loading is 30 times slower than from same EDA or EDT-image. It seems, there is something wrong with ROW-images emulation, especially with HD images. I've found original EDT images and now we can state that both EDA and EDT images emulate normally. Just change the Skew value to 2 and check "Side based" I see, skewing doesn't works for RAW images. Using these settings USB HxC Floppy Emulator Works with IMG files (EDT&EDA similar) but VERY-VERY slow! Even much slower (ten times) than with normal EDA images.
Usb image tool 1.61 Pc#
I had to force IBM PC 720K mode, because in AUto mode Shugart mode choosed, and if PC 1.44 mode forced - "Disk not formatted" message appears. I tried to load them in ROW mode using next settings:Ģ sides MFM 80 tracks 20 sectors per track Sector ID start 0 RPM 300 Sector size 512 Bitrate 250000 Auto GAP3 Format value 246 Interleave 1 Skew 0 Total sectors 3200 Total size 1638400. Unfortunately I do not have EDT images for TS-10. We can assume that all is OK with EDA images on ASR-10 and TS-10/12 ensoniqs.
I loaded different EDA images - load speed is amazing! I used more stable ASR OS 1.61 (instead of last 3.53) - no errors and reboots observed now. SD version I'll test after USB version will be OK.Ĭongratulations! It works! I tested last beta version with USB HxC Floppy Emulator on my ASR-10 and TS-10. Is it possible to to add new parameter into the HXCSDFE.CFG to force sector order mode?
The shifts may be adjusted to get best operation. But in general the picture is clear.Ĭ00h00x00MFM C00 H00 R N02Īs we can see, "side 1" sector numbers shifted +2 from "side 0" of the same track, and "side 0" sectors shifted +3 from "side 1" of previous track. Due to time unstability of floppy drive each time results were slightly different. After this I've got its "disk map" information using Omniflop diagnostic tools. I rewrote my EDA image on real floppy in special format using DOS program. Thisįeature gives a truly amazing increase in disk performance from floppies!" Order of sectors is staggered from one track to the next, so that the driveĭoesn't have to spin all the way around to start on the next track. Your disk access by formatting the disk sectors in a special order. ".a feature called sector shift speeds up I've found one old document in which stated that "special" disk format is available not only for ASR-10 & TS-10/12 (HD disks) but for EPS-16+ too (DD-disks). I've got more information for this theme and now, it seems, it should be correct. The order of sector numbers in track I gave last time was not correct. I tested the new beta version of HxC Floppy Emulator soft, but it failed. SDCard Floppy emulator I have not had time to check yet. From HFE image of this floppy files load TEN times slower! Original EDA and its HFE load some slower than from real floppy. They appeared to be different! From Real floppy file loading is fast. I made HFE image of real floppy with EDA image written on it and one more HFE image of the same EDA image. It seems, HxC Floppy Emulator doesn't support this feature (yet?)ĭoes it means, that even if in original image sectors arranged in a special order, anyway, HxC Floppy Emulator shall output them consequentially? This gives fantastic acceleration of files loading! With this procedure the operating system is able to handle loading the two sectors per one revolution of the disc.
Usb image tool 1.61 full#
Not too much time required for processing of one sector, therefore, the operating system is just waiting next sector coming after disk does full rotation.Īfter processing in special format all sectors with even numbers come first, after this come all odd ones - 0,2,4.18,1,3.17,19. Normally sectors in the track come one after the other - 0,1,2,3.19. It allows increase twice the speed of files loading due to certain order following sectors in the track. Special format is widely used for ASR-10 and TS-10/12 Ensoniqs.
Some minor issues stays, but generally it works.ĪSR-10 has two HD-disk formats - normal (1600 kb - 80 tracks) and special (1640 Kb - 82 tracks). Emulator began work better when packet size had been decreased (not increased!) to 1536 bytes and settle time decreased to 5-10 ms. I managed to adjust USB packet size setting. Have you tried the SDCard Floppy emulator ? (Settings -> USB HxC Floppy Emulator status -> USB packet size setting.) About the disk read can you try to increase the usb buffer size ?
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