Pci Support - Epson S1D13506 Technical Manual

Epson Research and Development
Vancouver Design Center

14.2.11 PCI Support

DWORD seGetLinearDisplayAddress(void)
Description:
Parameters:
Return Value:
DWORD seGetLinearRegAddress(void)
Description:
Parameters:
Return Value:
Programming Notes and Examples
Issue Date: 02/03/21
The S1D13506 utilizes up to two megabytes of display memory. Addressing that much
memory on Intel ISA based evaluation platforms is difficult and prone to introducing
conflicts. To overcome these obstacles the standard PCI evaluation boar is PCI based.
By placing the S1D13506 evaluation board on a PCI bus the issue of address space is elimi-
nated. In addition 32 bit software can be written and debugged in a Microsoft Windows
environment before being ported to an embedded platform.
In order for an application to access the S1D13506 memory and register the following two
functions are provided.
This function returns the linear address for the start of physical display memory on a PCI
system
None.
The return value is the linear address of the start of display memory. A linear address is a
32-bit offset, in CPU address space.
This function returns the linear address of the start of S1D13506 control registers.
None.
The return value is the linear address of the start of S1D13506 control registers. A linear
address is a 32-bit offset, in CPU address space.
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