SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 187

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

4.0
The purpose of the code examples below are to demonstrate the methods to identifying the
SPC8104F0A graphics controller. We have two recommended methods:
Sample code (in C):
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
SPC8104
//always enable Auxiliary register first
outpw (0x3de, 0x1ade);
inp (0x3df);
//try SOLLEX call to get chip product code & revision
regs.x.ax = 0x7fff;
regs.h.bl = 1;
int86(0x10, &regs, &regs);
if ( regs.x.ax == 0x7f)//SOLLEX call is successful
1. Identifying the SPC8104 through a Seiko Epson BIOS specific BIOS call ;
412-1.0
{
}
if ( regs.h.bh == 0xe2 )
else
IDENTIFYING THE SPC8104
printf ( "SPC8104 detected.\n" );
printf ( "SPC8104 not found.\n" );
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Programming Notes and Examples
SP3-33