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Rev 2455 Rev 5057
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        ja      .use_second_dma_controller
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        ja      .use_second_dma_controller
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        jb      @f
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        jb      @f
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.dma_setup_error:
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.dma_setup_error:
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if DEBUG
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if DEBUG
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        mov     esi, msgErrDMAsetup
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        mov     esi, msgErrDMAsetup
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        call    SysMsgBoardStr
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        invoke  SysMsgBoardStr
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end if
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end if
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        mov     dword[esp], START.stop
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        mov     dword[esp], START.stop
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        ret
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        ret
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@@:
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@@:
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if use_cli_sti
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if use_cli_sti
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        out     0xC, al;clear byte pointer flip-flop register
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        out     0xC, al;clear byte pointer flip-flop register
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        lea     eax, [ebx+0x58];auto-init mode for channel (ebx)
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        lea     eax, [ebx+0x58];auto-init mode for channel (ebx)
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        out     0xB, al;DMA channel 0-3 mode register
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- 
 
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        mov     eax, [SB16Buffer]
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        invoke  GetPhysAddr
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        mov     ecx, eax
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        out     0xB, al;DMA channel 0-3 mode register
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        shr     eax, 16
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 - 
 
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        movzx   edx, byte[ebx+dma_table];page register
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        mov     al, DMAPage
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        movzx   edx, byte[ebx+dma_table];page register
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        out     dx, al
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        out     dx, al
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        lea     edx, [ebx*2];DMA channel 0-3 base address
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        lea     edx, [ebx*2];DMA channel 0-3 base address
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        mov     al, 0;LSB is 0
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        mov     al, cl;LSB
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        out     dx, al
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        out     dx, al
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        out     0xD8, al;clear byte pointer flip-flop register
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        out     0xD8, al;clear byte pointer flip-flop register
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        lea     eax, [ebx+0x58];auto-init mode for channel (ebx+4)
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        lea     eax, [ebx+0x58];auto-init mode for channel (ebx+4)
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        out     0xD6, al;DMA channel 4-7 mode register
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        mov     eax, [SB16Buffer]
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        invoke  GetPhysAddr
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        mov     ecx, eax
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        shr     eax, 16
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        out     0xD6, al;DMA channel 4-7 mode register
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        shr     ecx, 1 ; 16-bit DMA takes offset in words
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 - 
 
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        movzx   edx, byte[ebx+dma_table+4];page register
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        mov     al, DMAPage
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        movzx   edx, byte[ebx+dma_table+4];page register
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        out     dx, al
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        out     dx, al
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        lea     edx, [ebx*4+0xC0];DMA channel 4-7 base address
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        lea     edx, [ebx*4+0xC0];DMA channel 4-7 base address
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        mov     al, 0;LSB is 0 ;for 16bit DMA this contains
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        mov     al, cl;LSB;for 16bit DMA this contains
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        out     dx, al;A1-A8 lines of address bus, A0 is zero
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        out     dx, al;A1-A8 lines of address bus, A0 is zero