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Q4. What are VGA, SVGA, and XGA?
A4. These are computer resolution standards defined by Video
Electronic Standard Association (VESA). It is an industry standard
for resolutions of personal computers. VGA is 640 x 480, SVGA is
800 x 600, and XGA is 1024 x 768
Standard Resolution Refresh
Rate
Horizontal
Frequency
Pixel
Frequency
60Hz
31.5KHz
25.175MHz
72Hz
37.9KHz
31.500MHz
75Hz
37.5KHz
31.500MHz
VGA 640 x 480
85Hz
43.3KHz
36.000MHz
56Hz
35.1KHz
36.000MHz
60Hz
37.9KHz
40.000MHz
72Hz
48.1KHz
50.000MHz
75Hz
46.9KHz
49.500MHz
SVGA 800 x 600
85Hz
53.7KHz
56.250MHz
43Hz
35.5KHz
44.900MHz
60Hz
48.4KHz
65.500MHz
70Hz
56.5KHz
75.000MHz
75Hz
60.0KHz
78.750MHz
XGA
1024 x
768
85Hz
68.7KHz
94.500MHz
Q5. How to solve the conflict between PS/2 Mouse and LAN?
A5. Please follow these steps:
1. If there is an IRQ12 conflict between LAN and PS/2 Mouse, the
latter will always occupy IRQ12 because of BIOS priority.
2. To solve the problem, you need a reserve IRQ for LAN.
3. Adjust the BIOS option (IDE, comX, etc. Disable) to get the extra
IRQ.
4. Test until every device works property.
Q6. How to set CPU-SDRAM Frequency under Bios for E-Pos Magnum
(Super Market Model)
A6. If any changes or Bios Defaults are set, then the System will run on
a 100 MHz Frequency for CPU and SDRAM, to ensure Correct CPU
and SDRAM Type & Speed, follow these steps,
