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r7482 Tuesday 2nd March, 2010 at 05:30:32 UTC by Barry Rodewald
[uPD765] Workaround for inconsistent Track 0 signal.
[src/mess/machine]upd765.c

src/mess/machine/upd765.c
r7481r7482
306306      if (fdc->upd765_flags & UPD765_SEEK_OPERATION_IS_RECALIBRATE)
307307      {
308308         /* not at track 0? */
309         if (!floppy_tk00_r(img))
309         if (fdc->pcn[fdc->drive] != 0)
310310            /* no, track 0 failed after 77 steps */
311311            fdc->upd765_status[0] |= 0x40 | 0x10;
312312      }

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