| 1 | | Thanks for the note about GetDevCaps and how to check for presence of start2/strat3, if strat1 is present. But how could I find a strat1 address of an .ADD then? Yes, most probably, the .ADD is managed by OS2DASD.DMD, but OPTICAL.DMD can be the case of magnetooptical drives, and OS2CDROM.DMD too (as you could notice, I was able to read/write to a FAT formatted CDRW, and it works). Strat2 is needed 1) for cache to flush sectors to disk, read them (but atm, Ko Myung Hun removed strat2 for unknown reason, and used FSH_DOVOLIO instead. This should degrade performance.) 2) to swap, if we're using FS_DOPAGEIO (I have unfinished swap routines in ifsswap.c). So, strat2 found via pDevCaps, is used for these two purposes. If getting it via pvpfsi->vpi_pDCS is unreliable, how can I get them for each .DMD then? Could I reuse the ReturnDriverCaps rounine? |
| | 1 | Thanks for the note about GetDevCaps and how to check for presence of start2/strat3, if strat1 is present. But how could I find a strat1 address of an .ADD then? Yes, most probably, the .ADD is managed by OS2DASD.DMD, but OPTICAL.DMD can be the case of magnetooptical drives, and OS2CDROM.DMD too (as you could notice, I was able to read/write to a FAT formatted CDRW, and it works). Strat2 is needed 1) for cache to flush sectors to disk, read them (but atm, Ko Myung Hun removed strat2 for unknown reason, and used FSH_DOVOLIO instead. This should degrade performance.) 2) to swap, if we're using FS_DOPAGEIO (I have unfinished swap routines in ifsswap.c). So, strat2 found via pDevCaps, is used for these two purposes. If getting it via pvpfsi->vpi_pDCS is unreliable, how can I get them for each .DMD then? Could I reuse the ReturnDriverCaps rounine? I'll need also to detect which .DMD is used in particular case. |
