Mitsubishi Electric LS Pro Hardware Technical Reference page 127

Revision C system board
CL-GD5410
The video adapter on revision C of the LS Pro system board is based on a Cirrus Logic
CL-GD5410 chip. The CL-GD5410 contains all the elements of a VGA controller,
except display memory, providing 100% compatibility with the IBM VGA standard.
The video adapter consists of the GD5410 video controller, 1 Mbyte of display
memory, a frequency synthesizer and a 7.6mA current reference.
The frequency synthesizer is controlled by the GD5410 and is used to generate the
video clocks for all video modes. Video dot clocks vary from 25 to 65 MHz depending
on video mode.
Software support is provided by a video BIOS included in the system BIOS.
In addition to full compatibility with the VGA standard the GD5410 supports a range
of enhanced video modes. Seven enhanced modes are supported in the BIOS.
The video modes available are given in the following table:
Mode
0, 1
2, 3
4, 5
6
7
D
E
F
10
11
12
13
2E
30
37
38
64, 6A
7A
7B
Notes
1. These are enhanced video modes.
Sync signals output to the monitor are at TTL levels while the analogue video outputs
are at 0 to 0.7 volts.
B/2 LS PRO HARDWARE TECHNICAL REFERENCE
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