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Summary of Monitor Timing Parameters for 6091-023 and 6091-019
Mode
Mode 1
Mode 2
Mode 3
Mode 3
6091-019 Only
6091-019 Only
Sync Type
Composite
Composite
Composite
Separate Sync
Sync on
Sync on
Sync on
Green
Green
Green
Format
1024x1024
1280xl024
1280x1024
1280xl024
Pixel Clock Freq.
89.2108 Mhz
111.518 Mhz
120.0 Mhz
120.0 Mhz
Pixel time
11.2094 ns
8.9671 ns
8.333 ns
8.333.ns
H Line Rate
15.7828 us
15.7828 us
14.1333 us
14.333 us
H Line Frequency
63.360 Khz
63.360 Khz
70.75 Khz
70.75 Khz
H Active Scan Time
11.4780 us
11.4780 us
10.6667 us
10.6667 us
H Sync Width
1.7940 us
1.7940 us
I
.3333 us
I
.3333 us*
H Front Porch Width
0.2350 us
0.2350 us
0.2667 us
0.1333 us*
H Back Porch Width
2.2750 us
2.2750 us
1.8667 us
2.0000 us*
H Blanking Width
4.3040 us
4.3040 us
3.4667 us
3.4667 us*
H Retrace
< 3.5 us
< 3.5 us
= > 3.2 us
=>3.2us
V Frame Rate (Freq)
60 hz(N/I)
60 hz(N/I)
. 67 hz(N/I)
67 hz(N/I)
V Period
16,666 us
16,666 us
14,925 us
14,925 us
Serrated V sync width
(3H) 47.3 us
(3H) 47.3 us
(3H) 42.4 us
(3H) 42.4 us*
V Front Porch Width
(3H) 47.3 us
(3H) 47.3 us
(3H) 42.4 us*
(3H) 42.4 us*
V Back Porch Width
(26H)410.4us
(26H)410.4us
(26H)367.5 us
(26H)367.5
us*
V Blanking Width
(32H) 505 us
(32H) 505 us
(32H) 452 us
(32H) 452 us
V Retrace
350 us
350 us
350 us
350 us
Total Scan Lines
1056
1056
1056
1056
V Displayable lines
1024
1024
1024
l
1024
*
For reference, denotes sync width and position of sync with respect to the leading edge of blanking for
Mode 3 application.
4-4
Setup and Operation for the IBM 6091 Color Displays
I
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