Feature drv1571burst #20
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added 15 commits
March 11, 2024 23:58
… other code and docs
…ue INQUIRE DISK and read back status byte afterwards
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I'm dumb - this can be twice as fast as BSW code. I could notice that only when using track caching on expanded 1571 (https://github.com/ytmytm/1571-TrackCacheROM). Simply put - when testing on original disks it does nothing because sector interleave is suboptimal. What is gained on transfer speed it lost on waiting for the next sector in the chain. Now to figure out the optimal interleave value here. |
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This is a 1571 driver meant only for
VARIANT=bsw128which uses native Burst Command Instruction Set (see chapter 10 of 1571 User's Guide).The speed is comparable to the BSW driver, but the drive is not running speed code, so
EnterTurbo/ExitTurbocalls do nothing and there is no need to reset the drive.I put it on hold in March 2002 just to complete now.