search for: dpte

>information a bit closer; it'd find that it's marked accordingly. UDMA2.SYS author now worked around it, it seems you do something with "DPTE" in isolinux.asm but not using it (probably for memdisk or direct floppy/harddisk emulation?). also something about EDD v1.1 and v3.0 specifications and setting bits to 1. Anyway, the driver works now on: BIOS -> cdrom -> Isolinux -> A: -> MSDOS -> UDMA2.SYS -> COMMAND.COM -...

...ons(+), 0 deletions(-) diff --git a/memdisk/memdisk.inc b/memdisk/memdisk.inc index 2699c34..b4d45c4 100644 --- a/memdisk/memdisk.inc +++ b/memdisk/memdisk.inc @@ -1008,6 +1008,17 @@ EDD_DPT: .totalsize dd 0, 0 ; Filled in by installer .bytespersec dw SECTORSIZE .eddtable dw -1, -1 ; Invalid DPTE pointer +.dpikey dw 0 ; Device Path Info magic (not impl.) + ; Would be 0beddh if implemented +.dpilen db 2ch ; DPI len +.res1 db 0 ; Reserved +.res2 db 0 ; Reserved +.bustype equ ''PCI '' ; Host bus type (4 bytes, space padded) +.inttype equ ''ATA '...

These changes are based on Jason's latest hmm branch. Patch 1 was previously posted here [1] but was dropped from the orginal series. Hopefully, the tests will reduce concerns about edge conditions. I'm sure more tests could be usefully added but I thought this was a good starting point. [1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/ Ralph Campbell