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Epson Research and Development
Page 89
Vancouver Design Center
Programming Notes and Examples S1D13505
Issue Date: 01/02/05 X23A-G-003-07
#define REGISTER_OFFSET ((unsigned char *) 0x14000000)
/*
** DISP_MEM_OFFSET points to the starting address of the display buffer memory
*/
#define DISP_MEM_OFFSET ((unsigned char *) 0x4000000)
/*
** DISP_MEMORY_SIZE is the size of display buffer memory
*/
#define DISP_MEMORY_SIZE 0x200000
/*
** Calculate the value to put in Ink/Cursor Start Address Select Register
** Offset = (DISP_MEM_SIZE - (X * 8192)
** We want the offset to be just past the end of display memory so:
** (640 * 480) = DISP_MEMORY_SIZE - (X * 8192)
**
** CURSOR_START = (DISP_MEMORY_SIZE - (640 * 480)) / 8192
*/
#define CURSOR_START 218
void main(void)
{
unsigned char * pRegs = REGISTER_OFFSET;
unsigned char * pMem;
unsigned char * pLUT;
unsigned char * pTmp;
unsigned char * pCursor;
long lpCnt;
int idx;
int rgb;
long x, y;
/*
** Initialize the chip.
*/
/*
** Step 1: Enable the host interface.
**
** Register 1B: Miscellaneous Disable - host interface enabled, half frame
** buffer enabled.
*/
*(pRegs + 0x1B) = 0x00; /* 0000 0000 */
/*
** Step 2: Disable the FIFO
*/
*(pRegs + 0x23) = 0x80; /* 1000 0000 */
/*
** Step 3: Set Memory Configuration
**
** Register 1: Memory Configuration - 4 ms refresh, EDO
*/
*(pRegs + 0x01) = 0x30; /* 0011 0000 */