Page 138 Epson Research and Development
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S1D13505 Hardware Functional Specification
X23A-A-001-14 Issue Date: 01/02/02
Where KB = K bytes and MB = 1024K bytes
13.4 Limitations
The following limitations apply to SwivelView:
Only 8 bpp and 16 bpp modes are supported – 1/2/4 bpp modes are not supported.
Hardware cursor and ink layer images are not rotated – software rotation must be used. Swivel-
View must be turned off when the programmer is accessing the sprite or the ink layer.
Split screen images appear side-by-side, i.e. the portrait display is split vertically.
Pixel panning works vertically.
Table 13-2 Minimum DRAM Size Required for SwivelView
Panel Size Panel Type Display
Mode Display
Buffer Size Half-Frame
Buffer Size Minimum
DRAM Size
Sprite/Ink
Layer Buffer
Size
Ink/Cursor
Layer Location
320 × 240
Single
Color 8 bpp 240KB
0KB
512KB 1KB/18.75KB
496KB/ 480KB
16 bpp 480KB
Mono 8 bpp 240KB
16 bpp 480KB
Dual
Color 8 bpp 240KB 18.75KB 480KB/464KB
16 bpp 480KB 480KB/--
Mono 8 bpp 240KB 4.69KB 496KB/480KB
16 bpp 480KB
640 × 480
Single
Color 8 bpp 480KB
0KB
1KB/75KB
496KB/--
16 bpp 960KB 2MB 2032KB/1968KB
Mono 8 bpp 480KB 512KB 496KB/--
16 bpp 960KB
2MB 2032K/1968K
Dual
Color 8 bpp 480KB 75KB
16 bpp 960KB
Mono 8 bpp 480KB 18.75KB 512KB 496KB/--
16 bpp 960KB
2MB
2032KB/1968KB
800 × 600
Single
Color 8 bpp 600KB
0KB
1KB/
117.19KB 2032KB/1920KB
16 bpp 1.2MB
Mono 8 bpp 600KB
16 bpp 1.2MB
Dual
Color 8 bpp 600KB 117.19KB
16 bpp 1.2MB
Mono 8 bpp 600KB 29.30KB
16 bpp 1.2MB