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Udo.Keller

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    Freudenberg, DE
  1. Udo.Keller

    SE/30 booting off CF success

    What happens if you take the internal HDD of your SE/30(A) (that is known to be readable and bootable) and install it in SE/30( internally?
  2. Udo.Keller

    SE/30 booting off CF success

    Maybe you can try connecting a PATA disk to the IDE-SCSI bridge instead of a CF card. If it works O.K., then we know the IDE-SCSI bridge is alright and we can focus on the CF card.
  3. Udo.Keller

    CF AztecMonsters have landed

    Here's another comparison: AEC-7720U with CF card versus spinning platter HD (Toshiba MK3021GAS). Both the CF card and the HD have been initialized with Intech HD SpeedTools v3.6. The HD, hooked behind the AEC-7720U, does not perform better than a CF card. For me, the performance bottleneck seems to be the SCSI-IDE bridge. What do you think?
  4. Udo.Keller

    CF AztecMonsters have landed

    Did that. And since I was flashing the AEC-7720U to the Mac-specific firmware version 3.7m anyway, I took the AztecMonster, held it against the Acard firmware flashing tool and guess what? The firmware flashing tool identified the AztecMonster firmware as Acard version 3.7m. So from a firmware point of view, the AztecMonster is a 7720U running firmware version v3.7m. Here are the measurements, done with my SE/30. IMHO, they are indistinguishable.
  5. Udo.Keller

    Strange Nubus Graphics card

    Copyright is 1991, however, some of the ICs have built dates from 1993. And here is a closeup shot of the PLCC sockets.
  6. Udo.Keller

    Strange Nubus Graphics card

    I just opened my newly received Quadra 700, and found that strange graphics card inside. The former owner did wipe the disk, so there's no control panel and no extension available. Does anybody know this beast? Thinking further, does anybody have suitable information or software to bring it back to life? Here is a better picture: http://dl.dropbox.com/u/2545101/DSCN2122.jpg
  7. Udo.Keller

    SE/30 booting off CF success

    The HDST driver, in combination with a CF card and an Acard SCSI-IDE bridge delivers more or less the same performance as a spinning platter HDD behind the same SCSI-IDE bridge. This is true for a G3 Powermac, but not for the SE/30: http://68kmla.org/forums/viewtopic.php?f=7&t=17047&start=82 The very same CF card with the very same HDST driver and the very same SCSI-IDE bridge shows better performance when used with a Macintosh that has a more performant SCSI bus. Both read and write performance reach the same level. Summary: (1) The bottleneck for write performance is not in the CF card itself. The very same card gives better results when combined with a faster Macintosh host. (2) And it is not in the SCSI-IDE bridge itself, neither the AztecMonster nor the AEC-7720U. The very same bridges show better results when combined with a faster Macintosh host. (3) The SE/30 SCSI bus itself is not the bottleneck, too. The very same SE/30 shows better results with a real spinning-platter SCSI HDD. Do you agree so far? Then, the limitation seems to be in the combination of Macintosh SCSI bus and SCSI-IDE bridge. What do you think?
  8. Udo.Keller

    CF AztecMonsters have landed

    The CF AztecMonster is built around an Acard SCSI-IDE bridge, the same one that is used in the AEC-7720U. So I took an AEC-7720U, a Toshiba MK3021GAS 2.5" HDD and my G3 Powermac running MacOS 9.2 and got the following results: And here's the AztecMonster with a CF card, attached to the same Powermac as above: Finally, a real SCSI HDD (Quantum Fireball 1280S) not needing the Acard SCSI-IDE bridge chip: Powermac G3 Findings: • In combination with an Acard SCSI-IDE bridge, a real HDD and a CF card show similar performance. Not the same, but similar. • In both cases, the write performance reaches the same level as read performance. But it needs large transfer sizes to do so. • Without the Acard SCSI-IDE bridge, a normal SCSI disk behaves more or less comparable to the CF card.
  9. Udo.Keller

    CF AztecMonsters have landed

    QuickBench claims that it bypasses the system disk cache as well. FWIW, here's the Kingston SSD I benchmarked last month. But this time, it has been initialized with HDST instead of HDT: And here, for reference, is the FWB benchmark for the same SSD, taken 4 weeks ago: Again, the same findings as above: • HDST enhances the read performance to 1.8 MB/sec. • Write performance is still limited to 407 KB/sec.
  10. Udo.Keller

    CF AztecMonsters have landed

    The TIFF attachments seem to make problems for some comrades, sorry. From my side they looked O.K. Here comes a 2nd approach, this time with PNG attachments. So we go again. Absolutely. I took QuickBench, available as part of Intech HD SpeedTools, and did benchmark one of my CF cards w/ AztecMonster again: For reference, here is the FWB benchmark result, taken 4 weeks ago: The results for both sustained read and sustained write are more or less the same. Random read and random write are comparable, too. Please note that the FWB diagram has a linear x-axis, whereas the QuickBench diagram has a logarithmic one. But guess what? Following JDW's thought I just bought the Intech HD SpeedTools and re-initialized the CF card with HD SpeedTools, thus deleting the FWB driver with the HDST driver. Look at that: Lessons learned so far: • Benchmarks made with FWB HDT and with Intech QuickBench show similar results. So presumably it's not the benchmark tool itself introducing the problem. • CF card shows dramatically better read performance when formatted with Intech HDST. Regarding write performance, both FWB HDT and Intech HDST deliver the same, disappointing results. For comparison, here are the QuickBench results of a Quantum Fireball 1280S real spinning platter hard disk.
  11. Udo.Keller

    CF AztecMonsters have landed

    Simple reason: The ATTO tools don't work on my SE/30 with System 7.1. According to their README file the require System 7.5.2 or later, and although they come as fat binaries, they crash on System 7.1.Image 8.tif
  12. Udo.Keller

    CF AztecMonsters have landed

    Absolutely. I took QuickBench, available as part of Intech HD SpeedTools, and did benchmark one of my CF cards w/ AztecMonster again: Image 6.tif For reference, here is the FWB benchmark result, taken 4 weeks ago: The results for both sustained read and sustained write are more or less the same. Random read and random write are comparable, too. Please note that the FWB diagram has a linear x-axis, whereas the QuickBench diagram has a logarithmic one. But guess what? Following JDW's thought I just bought the Intech HD SpeedTools and re-initialized the CF card with HD SpeedTools, thus deleting the FWB driver with the HDST driver. Look at that:Image 5.tif Lessons learned so far: • Benchmarks made with FWB HDT and with Intech QuickBench show similar results. So presumably it's not the benchmark tool itself introducing the problem. • CF card shows dramatically better read performance when formatted with Intech HDST. Regarding write performance, both FWB HDT and Intech HDST deliver the same, disappointing results. For comparison, here are the QuickBench results of a Quantum Fireball 1280S real spinning platter hard disk.Image 7.tif
  13. Udo.Keller

    CF AztecMonsters have landed

    Good to see some new life here. Glad you tuned in. (1) I have not configured the driver yet. Still using default parameters. (2) The Aztec presents a SCSI device. Image0.tif
  14. Udo.Keller

    CF AztecMonsters have landed

    The benchmark I used is an integral part of the ancient FWB Hard Disk Toolkit. For details, you might look here: http://macintoshgarden.org/apps/fwb-hard-disk-toolkit-452
  15. Udo.Keller

    CF AztecMonsters have landed

    Just a thought: How about that disk cache in System 7? Is it only used for the boot disk or is it used for all available drives?
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