
1-6 Technical Information
The Versa S supports system and video BIOS shadowing. When shadowing is enabled (de-
fault settings), the BIOS is copied from ROM to RAM which speeds up system perform-
ance. These settings can be changed in the SCU (see Section 2, Setup and Operation).
Table Section 1-2 shows the system's memory map.
Table Section 1-2 Versa S System
Memory Map
Address
Function
FFFFF
|
F0000
System BIOS (shadow) (64 KB)
|
E8000
MAXIMIZER (shadow) (32 KB)
|
E0000
Video BIOS (shadow enabled) (32 KB)
|
C8000
ISA space available
|
C0000
Video BIOS (shadow enabled) (32 KB)
Video Controller
The Cirrus CL-GD6235 video controller integrates a 32-bit local bus video. The system
ships with 512 KB VRAM supporting LCD video modes up to 640 x 480 resolution with
256 colors (color model) or 64 shades of gray (monochrome model).
The system provides a 15-pin D-SUB connector to allow connecting an external display to
the system. The system supports external display video modes up to 1024 x 768 with 16
colors or 800 x 600 x 256 color (non-interlaced). System video also supports simultaneous
external display and LCD viewing. Table Section 1-3 shows the supported Versa S video
modes.
Table Section 1-3 Versa S Video Modes
Mode
(Hex)
Pixel
Resolution
Character
Size
Columns
/Rows
Colors
(K)
Video
Clock
(MHz)
Horizontal
Freq
(kHz)
Vertical
Freq
(Hz)
12
640 x 480
8 x 16
30 x 30
16/256
25.0
31.5
60.0
58/6A *
800 x 600
8 x 16
100 x 37
16/256
40.0
37.8
60.0
5C *
800 x 600
8 x 16
100 x 37
256/256
40.0
37.9
60.0
5D *
1024 x 768
8 x 16
128 x 48
16
65.0
48.3
60.0
Содержание VERSA S
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