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Page 138
Epson Research and Development
Vancouver Design Center
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