av:playstation_2_rgb_sync
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av:playstation_2_rgb_sync [2006/01/24 16:06] – 66.90.200.118 | av:playstation_2_rgb_sync [2006/01/24 16:17] – 66.90.200.118 | ||
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* **MacroVision** - Since the PlayStation 2 does not have a dedicated sync channel the sync has to be taken from either Composite Video or from the Luminance line used for S-Video using a sync separation chip (such as the popular LM1881). When a movie is played the MacroVision signal is inserted into the video signal. Part of what it does is include extra sync pulses that can be ignored by TV sets but not by recording devices such as VCRs. However, with the exclusion of the EL1883 and ISL59885 sync chips, all other sync separation chips cannot account for the extra pulses and your picture will get messed up. You will also need something like a GameShark or Region DVD program to turn off the Component Video Forceback then use the EL1883 to watch movies properly in RGB. A bit of a pain. By getting the sync signals from the motherboard you can outright avoid MacroVision without using any additional programs or modchips. | * **MacroVision** - Since the PlayStation 2 does not have a dedicated sync channel the sync has to be taken from either Composite Video or from the Luminance line used for S-Video using a sync separation chip (such as the popular LM1881). When a movie is played the MacroVision signal is inserted into the video signal. Part of what it does is include extra sync pulses that can be ignored by TV sets but not by recording devices such as VCRs. However, with the exclusion of the EL1883 and ISL59885 sync chips, all other sync separation chips cannot account for the extra pulses and your picture will get messed up. You will also need something like a GameShark or Region DVD program to turn off the Component Video Forceback then use the EL1883 to watch movies properly in RGB. A bit of a pain. By getting the sync signals from the motherboard you can outright avoid MacroVision without using any additional programs or modchips. | ||
- | * **Sync-On-Green** - To take advantage of the Progressive Scan feature on some games (and on movies | + | * **Sync-On-Green** - To take advantage of the Progressive Scan feature on some games (and on movies |
* **Sync Separation Chips** - By obtaining the sync signals from the motherboard you will no longer need to use any sync chip for use with the PlayStation 2. | * **Sync Separation Chips** - By obtaining the sync signals from the motherboard you will no longer need to use any sync chip for use with the PlayStation 2. | ||
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You can make your own Composite Sync signal with two very simple components. First, run the Horizontal Sync through a 1N4148 diode (very common - can be found at Radio Shack). Second, run the Vertical Sync through a 820 Ohm resistor. Once the two signals have been conditioned this way then you can simply splice them together. | You can make your own Composite Sync signal with two very simple components. First, run the Horizontal Sync through a 1N4148 diode (very common - can be found at Radio Shack). Second, run the Vertical Sync through a 820 Ohm resistor. Once the two signals have been conditioned this way then you can simply splice them together. | ||
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+ | ===== Theory of RGB Operation (SCPH-50000 unit) ===== | ||
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+ | In this model Sony did some major revisioning. They removed the Firewire port, quieted down the fan and DVD drive, and added Progressive Scan DVD playback. | ||
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+ | Unfortunately, | ||
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+ | Worse, I could not even find stable sync from this style of motherboard. | ||
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+ | ===== Theory of RGB Operation (SCPH-70000 unit) ===== | ||
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+ | The reason that this unit is so small is the fact that Sony combined the two main chips (Emotion Engine and Graphics Synthesizer) into one chip called the " | ||
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+ | Like the SCPH-50000 units this PS2 also uses a DAC chip: the CXM-4015. However, unlike the SCPH-50000 units, I was able to find the sync signals from this motherboard. | ||
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+ | ===== Acquisition of Sync Signals ===== | ||
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+ | The sync signals can be found very close to the EE+GS chip as shown in the above picture. One of the resistor packs is included as a landmark to help locate the signals. | ||
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av/playstation_2_rgb_sync.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1