System 16a schematics

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patzik

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I have a shinobi bootleg wich I got working but has severe graphics issues, and an shinobi system16a pcb which doesn't boot at all.
I have the system16b schematics but think I read the system16a one is also floating around but I can't find it. Anyone here that has it?
 
ExZX

ExZX

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patzik said:
Can't believe I missed this, thanks! It's a bit hard to read so if anyone knows of a better copy that would be great, but this will work for now...
Click to expand...
Read the first page mate:

Sega Quartet and Quartet 2 Schematics
System 16A
Note: These incomplete schematics are for the large revision of board that has ICxx
designations on the silk screen. They have been modified to have some IC locations where I
traced out things working on a Quartet and a Quartet 2 boardset that used an alpha and
numeric grid pattern to designate IC locations.
The IC locations have been traced out, but many smaller logic gates have different pin
assignments which means, check the pins on the chips carefully to see where they connect.
Additionally, the EPROMs are on a daughterboard and have similar chip locations so you may
se some chips with identical locations, but they will be on different PCBs.
 
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patzik

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ZXSTfm said:
Read the first page mate:

Sega Quartet and Quartet 2 Schematics
System 16A
Note: These incomplete schematics are for the large revision of board that has ICxx
designations on the silk screen. They have been modified to have some IC locations where I
traced out things working on a Quartet and a Quartet 2 boardset that used an alpha and
numeric grid pattern to designate IC locations.
The IC locations have been traced out, but many smaller logic gates have different pin
assignments which means, check the pins on the chips carefully to see where they connect.
Additionally, the EPROMs are on a daughterboard and have similar chip locations so you may
se some chips with identical locations, but they will be on different PCBs.
Click to expand...
That’s not what I meant with ’better copy’. The ic numbers and pins are exactly as on my System16a board. With better I meant more readable.
 
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