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Author Topic: Alice Chip Sync Signal Voltage??  (Read 1279 times)

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Offline Ami_GFXTopic starter

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Alice Chip Sync Signal Voltage??
« on: September 13, 2011, 03:00:30 AM »
Does anyone know the voltage levels of the Vertical and Horizontal sync signals on pins 79 and 81 of the Alice chip. Are they TTL or a higher or lower voltage.

If they are TTL, I should be able to do a very simple mod to my DCE Flickermagic to change the sync signal source from the Alice chip to the VGA output of a Sync Strainer which would make the Flickermagic work with my Video Toaster in Genlock mode. If they are a different voltage, I could still do it but it would take a few more parts and bit more work.
A2500 owned since 1993 with A2630/DKB 2632, DKB Megachip, GVP EGS Spectrum, A2320 and GVP HC+8 on the inside and a DCTV on the outside. A4000D with CSPPC, Cybervision 64 and a Flicker Magic flicker fixer. A4000T Toaster Flyer & CSMKII. All systems completly retro and classic and mostly used to do geometic art as in my avatar.
 

Offline Zac67

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Re: Alice Chip Sync Signal Voltage??
« Reply #1 on: September 13, 2011, 06:46:39 PM »
Yes, they're TTL, both on the Alice chip and on the monitor port.
 

Offline Ami_GFXTopic starter

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Re: Alice Chip Sync Signal Voltage??
« Reply #2 on: September 13, 2011, 11:34:15 PM »
As I thought, Thanks
A2500 owned since 1993 with A2630/DKB 2632, DKB Megachip, GVP EGS Spectrum, A2320 and GVP HC+8 on the inside and a DCTV on the outside. A4000D with CSPPC, Cybervision 64 and a Flicker Magic flicker fixer. A4000T Toaster Flyer & CSMKII. All systems completly retro and classic and mostly used to do geometic art as in my avatar.