DOS ain't dead

IDE performance | new bugs discovered in IDECHECK (Users)

posted by DOS386, 04.10.2008, 04:57

FYI, I am with XDMA 3.1 now, because 3.3 causes XMS corruption

And, I discovered some "new" bugs in IDECHECK:

- /NOI hack doesn't work. Symptoms range from suspiciously good results (up to 2 seconds to "read" the complete HD, no time for the activity light to even go on ), through HDPMI exceptions up to low memory corruption (freezer, DOS kernel puking). What is it supposed to do at all ? Anyone can reproduce it ?

-
        movzx   eax,ax
        shl     eax, 4
        mov     [dwDMAList],eax
        add     eax,10h
        mov     [bufadr],eax
        mov     edi, eax
        add     eax,10000h-1        ;begin on a 64 kb boundary for DMA 
        xor     ax,ax
        mov     [bufadr2],eax
        mov     ecx,20000h/4
        test    [flags],FL_PIO
        jnz     @F
        mov     ecx,10000h/4
        mov     edi, eax
@@:
        mov     eax,ecx
        shr     eax,8
        invoke  printf, CStr(<lf,"%u kB read buffer at linear address %X",lf>), eax, edi
        xor     eax,eax
        rep     stosd

Maybe this could be optimized a bit ... is it needed to clear different areas of memory depending from PIO or DMA ? Clear all or nothing

@@:
        clc
        ret
waitdata_1::
@@:
        test    byte ptr @flat:[fIRQ],80h
        jnz     waitdata_ex
        in      al,61h
        loop    @B
        stc
        ret
waitdata_ex:

quad-dot - bug or feature ?

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Complete thread:

• IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - DOS386, 10.09.2008, 02:41 (Users)
  • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - Japheth, 10.09.2008, 07:50
    • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - DOS386, 23.09.2008, 15:58
      • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - DOS386, 25.09.2008, 16:00
        • IDE performance | new bugs discovered in IDECHECK - DOS386, 04.10.2008, 04:57
          • IDE performance | new bugs discovered in IDECHECK - Japheth, 04.10.2008, 09:01
            • IDE performance | new bugs discovered in IDECHECK - DOS386, 05.10.2008, 13:58
  • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - rr, 10.09.2008, 11:57
  • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - RayeR, 10.09.2008, 15:34
    • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - Rugxulo, 10.09.2008, 16:03
  • IDE performance | bugs in IDECHECK, UIDE, XDMA, XDMA32 - Khusraw, 10.09.2008, 16:12