av:playstation_1_sync
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====== PlayStation 1 Sync ====== | ====== PlayStation 1 Sync ====== | ||
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- | (Author and pictures: RARusk)\\ | ||
The purpose of this page is to show where to find the sync signals from PlayStation 1 motherboards so one does not have to use a sync chip. | The purpose of this page is to show where to find the sync signals from PlayStation 1 motherboards so one does not have to use a sync chip. | ||
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Unlike the very complicated PlayStation 2, the PlayStation 1 units are very easy to hack. Still, care must be taken whenever one opens up a game console unit. | Unlike the very complicated PlayStation 2, the PlayStation 1 units are very easy to hack. Still, care must be taken whenever one opens up a game console unit. | ||
- | The following pictures are from a SCPH-7501 unit (Version unknown) motherboard and a SCPH-101 (Version unknown) motherboard. The Composite Sync " | + | The following pictures are from a SCPH-7501 unit (Version unknown) motherboard and a SCPH-101 (Version unknown) motherboard. The Composite Sync circuit |
Being that this is a Wiki page you are more than welcome to add any information that will improve the quality of information provided here. | Being that this is a Wiki page you are more than welcome to add any information that will improve the quality of information provided here. | ||
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In the picture below you will see the main chip, the CXD8561, and the video chip, the A2106. You will also see a red rectangle. The sync signals are within this outline. | In the picture below you will see the main chip, the CXD8561, and the video chip, the A2106. You will also see a red rectangle. The sync signals are within this outline. | ||
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The picture below shows exactly where the Horizontal, Vertical, and Composite Sync signals can be found at the top of the motherboard (within the red rectangle). | The picture below shows exactly where the Horizontal, Vertical, and Composite Sync signals can be found at the top of the motherboard (within the red rectangle). | ||
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However, there is also another, and better, place to acquire the signals and that is underneath the motherboard as shown in the picture below. | However, there is also another, and better, place to acquire the signals and that is underneath the motherboard as shown in the picture below. | ||
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+ | On the Playstation SCPH-5001 you can get the composite sync signal from the Sony CXA1645M encoder (pin 20), which is on the bottom side of the mainboard PCB. | ||
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===== Newer PSOne Unit ===== | ===== Newer PSOne Unit ===== | ||
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In the picture below you will find where to tap the Horizontal and Vertical Syncs. You will note that there is no Composite Sync to be easily tapped into this time. | In the picture below you will find where to tap the Horizontal and Vertical Syncs. You will note that there is no Composite Sync to be easily tapped into this time. | ||
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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. |
av/playstation_1_sync.1138052771.txt.gz · Last modified: 2019/08/27 20:44 (external edit)