S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 173

• Manufacturer Part Number: S1D13503
• Description: S1d13503 Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
Programming Notes and Examples
Issue Date: 01/01/30
case 4:
break;
//
// If there are 4 colors/gray levels, there are 4 pixels/byte
//
color &= 0x03;
while (*str != 0)
++pVideoStart;
pVideoFirstColumn = pVideoStart;
}
{
ch = *str++;
if ((ch < ' ') || (ch - ' ' > MAX_FONT-1))
pFont = &font[ch - ' '][0];
for (y = 0; y < 8; ++y)
*pVideo++ = (unsigned char) Video;
CheckBank(pVideo, &bank);
pVideoFirstColumn += BytesPerScanLine;
}
ch = '.';
{
pVideo = pVideoFirstColumn;
Video = 0;
val = *pFont++;
//
// Since there are 4 colors/gray shades, each bit in the font will be
// represented in video memory as a two bit pixel.
//
if (val & 0x80)
if (val & 0x40)
if (val & 0x20)
if (val & 0x10)
*pVideo++ = (unsigned char) Video;
CheckBank(pVideo, &bank);
Video |= color;
Video |= (color << 6);
Video |= (color << 4);
Video |= (color << 2);
Video |= color;
// Point to next character
X18A-G-002-06
S1D13503
Page 77