SCSI DMA writes (for MODE SELECT) now correctly use InitLength instead of request_length when bus type is SCSI;
Fixed MODE SELECT page saving;
CD Audio volume is now correctly initialized on card initialization for all Sound Blaster variants, fixes CD Audio being muted when booting without the Sound Blaster initialization program;
Brought the Sound Blaster variants back to a sane sound volume but still louder than the old quietness;
Moved SCSI adapter initialization to before sound card initialization, fixes DOS SCSI CD-ROM driver hangs under some conditions.
Fixed a link-breaking bug in cdrom.c;
The AHA-154x now supports commands 0x28 (GET EXTENDED BIOS INFO) and 0x29 (UNLOCK MAILBOX) and no longer reports a firmware revision with scatter/gather bug;
The BusLogic now supports command 0x20 (RESET);
Fixed the GPIO register mapping on the National Semiconductors PC87306 Super I/O chip.
Improved the BusLogic incoming mailbox code;
The BusLogic callback is now three-phases and outgoing mailbox interrupts are emulated correctly;
Fixed the CD-ROM command READ DISC INFORMATION (0x51), fixes NetBSD crashing 86Box with segmentation fault when using the AHA-154x;
Added the CD-ROM command PAUSE/RESUME ALT (0xC2).
Previous CD-ROM sense is now correctly cleared when a REQUEST SENSE command is performed, fixes detection of disc change after setting the drive to empty first regardless of what bus is used for the CD-ROM.
ATAPI CD-ROM word reads no longer incorrectly discard the upper 16 bits, fixes the CD-ROM problems;
Significantly rewrote parts of the AHA-154x and BusLogic emulation, NT 3.1 RTM and MS-DOS drivers now works correctly;
The function in cdrom.c to read data blocks from the disc now correctly advances the position of the sector to read in non-passthrough mode, fixes multiblock reads from directly mounted ISO's;
Both ATAPI and SCSI now always check for Unit Attention and Not Ready on command execution.
SCSI LUN is now selectable for the CD-ROM drives;
Made sure every BusLogic RequestSetup ends in a StartMailbox sooner or later, fixes freezes with the DOS BusLogic drivers;
Commented out execess logging from mem.c;
Applied the mainline PCem commit that fixes the Bahamas64 on some boards.
Fixed several ATAPI CD-ROM bugs;
Added some missing CPL override checks to the MMU translate functions;
Tertiary and quaternary IDE controllers are now automatically disabled if not a single device is attached to them;
Changed sleep time on compile from 10 seconds to 2 seconds.
Fixed IDE and ATAPI 8-bit data reads and writes by rewriting the IDE and CD-ROM PIO data read and write code so that the base code is now 8-bit;
Added some compiler directives that if set, will enable togglable logging and log breakpoints;
Empty IDE channels now always report a status of 0x10 rather than 0x20, and do it on port 3F6h/376h/36Eh/3EEh too, fixes OAKCDROM.SYS infinite loop when hitting an empty IDE channel.
Four CD-ROM drives are now emulated;
ATAPI DMA is now emulated;
Unified CD-ROM pass through to host drive handling;
Applied all (applicable) mainline PCem commits.
Some cleanup.
End the SCSI request if the transfer length is already 0.
Additional fixes to support OS/2 1.3 and DOS buslogic drivers, still not 100% working for those, however, but CD-ROM is recognized.
Moved CD-ROM read data buffer declaration and definitions to SCSI source files and headers, but still applying to IDE when needed.
SCSI Read commands now return the correct sectors on callback.
DMA bug fixes.
