參數(shù)資料
型號： TP6508
英文描述： Pushbutton Switch; Actuator Diameter:0.078"; Circuitry:6PDT; Switch Operation:6 Changeover Push-Push; Contact Current Max:100mA; Leaded Process Compatible:Yes; Mounting Type:PCB; Switch Function:6PDT
中文描述： 顯卡
文件頁數(shù)： 85/134頁
文件大?。?/td> 600K
代理商： TP6508
P.82
Extended Index Register PREG Hex 09 : Prog. Class Code Register
This is a read only register.
Port address is Hex CFC.
Default value after hardware reset is Hex 00.
D0-7 Class code bit 0 to 7
Bit 0-7
The class code register is broken into three byte-size field. The upper byte (at offset
0Bh) is a base class code which broadly classifies the type of function the device
performs. The middle byte (at offset 0Ah ) is a sub-class code which identifies more
specific the function of the device. The lower byte (at offset 09h) identifies a specific
register-level programming interface so that device independent software can interact
with the device. TP6508 sets the class code of Hex 03,00,00 to mean that is a VGA
compatible controller .
Extended Index Register PREG Hex 0A : Sub-Class Code Register
This is a read only register.
Port address is Hex CFC.
Default value after hardware reset is Hex 00.
D0-7 Class code bit 8 to 15
Extended Index Register PREG Hex 0B : Base Class Code Register
This is a read only register.
Port address is Hex CFC.
Default value after hardware reset is Hex 03.
D0-7 Class code bit 16 to 23
Extended Index Register PREG Hex 0C : Reserved
This is a read/write register.
Default value after hardware reset is Hex 00.
Port address is Hex CFC.
D0-7 Reserved=0
Extended Index Register PREG Hex 0D : Reserved
This is a read/write register.
Default value after hardware reset is Hex 00.
Port address is Hex CFC.
D0-7 Reserved=0
Extended Index Register PREG Hex 0E : Header Type Register
This is a read/write register.
Port address is Hex CFC.
Default value after hardware reset is Hex 00.
D0-7
Header type bit 0 to 7
Bit 0-7
These bits identify the layout of bytes index 10h through 3Fh in configuration space .
Extended Index Register PREG Hex 0F : Reserved
This is a read/write register.
Default value after hardware reset is Hex 00.
Port address is Hex CFC.
D0-7
Reserved =0
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