193 lines
12 KiB
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193 lines
12 KiB
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<TITLE>Int 1A/AX=B10Ah/SF=1042h
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<META NAME="Description" CONTENT="
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Int 1A/AX=B10Ah/SF=1042h - PCI BIOS v2.0c+ - READ CONFIGURATION DWORD (PC Technology devices) -
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AX = B10Ah subfn 1042h
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BH = bus number
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BL = device/function number (bits 7-3 device, bits 2-0 function)
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DI = register number (0000h-00FFh) (see #00878)
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Return: CF clear if successful
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ECX = dword read
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CF set on error
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AH = status (00h,87h) (see #00729)
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EAX, EBX, ECX, and EDX may be modified
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all other flags (except IF) may be modified
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<h2>Int 1A/AX=B10Ah/SF=1042h
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<h3><font color=#C00040>PCI BIOS v2.0c+ - READ CONFIGURATION DWORD (PC Technology devices)</font></h3>
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<PRE>
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AX = B10Ah subfn 1042h
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BH = bus number
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BL = device/function number (bits 7-3 device, bits 2-0 function)
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DI = register number (0000h-00FFh) <a href="rb-2377.htm#Table878" tppabs="http://www.ctyme.com/intr/rb-2377.htm#Table878">(see #00878)</a><br>
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<p><b>Return:</b><br>CF clear if successful
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ECX = dword read
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CF set on error
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AH = status (00h,87h) <a href="rb-2371.htm#Table729" tppabs="http://www.ctyme.com/intr/rb-2371.htm#Table729">(see #00729)</a>
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EAX, EBX, ECX, and EDX may be modified
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all other flags (except IF) may be modified
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</PRE>
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<p><b>Notes:</b>
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This function may require up to 1024 byte of stack; it will not enable
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interrupts if they were disabled before making the call.
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The meanings of BL and BH on entry were exchanged between the initial
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drafts of the specification and final implementation
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<p><b>See Also:</b>
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<a href="rb-2377.htm" tppabs="http://www.ctyme.com/intr/rb-2377.htm">AX=B10Ah</a> - <a href="rb-2381.htm" tppabs="http://www.ctyme.com/intr/rb-2381.htm">AX=B10Ah/SF=1022h</a> - <a href="rb-2383.htm" tppabs="http://www.ctyme.com/intr/rb-2383.htm">AX=B10Ah/SF=1045h</a> - <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-2387. \n\nThis file was not retrieved by Teleport Pro, because it is linked too far away from its Starting Address. If you increase the in-domain depth setting for the Starting Address, this file will be queued for retrieval. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-2387.'" tppabs="http://www.ctyme.com/intr/rb-2387."
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<PRE>
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<p>
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Format of PCI Configuration data for PC Technology RZ-1000 EIDE controller:
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<a name=table928></a>
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Offset Size Description (Table 00928)
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00h 64 BYTEs header <a href="rb-2377.htm#Table878" tppabs="http://www.ctyme.com/intr/rb-2377.htm#Table878">(see #00878)</a>
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(vendor ID 1042h, device ID 1000h)
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10h DWORD base address for controller I/O registers
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(set to 01F1h for primary controller, 0171h for secondary)
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14h DWORD base address for controller digital I/O port
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(set to 03F5h for primary, 0375h for secondary)
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40h DWORD ???
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<p><b>bits 7-1:</b><br>???
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<p><b>bit 13:</b><br>Read-ahead mode enabled
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(Read-Ahead is buggy on original RZ-1000, and is
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thus typically disabled by clearing this bit)
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<p><b>bit 16:</b><br>???
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44h DWORD ???
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48h 8 BYTEs ???
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50h 176 BYTEs unused???
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</PRE>
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<p>
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<b>Category: <a href="cat-014.htm" tppabs="http://www.ctyme.com/intr/cat-014.htm">
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Expansion Bus Bios</a>
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- <a href="int-1a-1.htm" tppabs="http://www.ctyme.com/intr/int-1A.htm">
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Int 1Ah</a>
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P</a>
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