Here are misc fixes done by VirtualBox team.
With these patches, floppy emulation is now good enough to run Xenix.
Changes v3->v4:
- added pc-1.1 machine type
- disable media transfer rate check on older machine types
- save/restore media transfer rate when media transfer rate check enabled
Changes v2->v3:
- removed patch changing controller stepping to 0
- fixed out of bound access after bad seek command
Changes v1->v2:
- updated commit messages
- added missing 'break' and braces
Hervé Poussineau (11):
fdc: take side count into account
fdc: set busy bit when starting a command
fdc: most control commands do not generate interrupts
fdc: handle read-only floppies (abort early on write commands)
fdc: add CCR (Configuration Control Register) write register
block: add a transfer rate for floppy types
pc: add 1.1 machine type
fdc: add a 'check media rate' property. Not used yet
fdc: check if media rate is correct before doing any transfer
fdc: fix seek command, which shouldn't check tracks
fdc: DIR (Digital Input Register) should return status of current
drive...
block.c | 74 ++++++++++++++++--------------
block.h | 10 ++++-
hw/fdc.c | 142 +++++++++++++++++++++++++++++++++++++++++++++++-----------
hw/pc.c | 3 +-
hw/pc_piix.c | 47 +++++++++++++++++++-
5 files changed, 211 insertions(+), 65 deletions(-)