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Apple //e RGB Card's TTL Logic



    There is no Apple //e RGB Card's schematic existence.  I am able to draw 
my own schematic from scratch by looking at Apple //e RGB Card's TTL chips 
and wiring traces.  I need to use information by converting from 16 colors' 
4 bits to R, G, B, and H/V sync.
    I am unable to obtain TTL information to see the inside chip.  Google 
search is complicated.  Do you know where can I find TTL chip directory 
which it has all pinout inside chip?  It is an example of SN74LS173AN chip. 
Are you sure that different manufacturers make the same chip design using 
model such as 74LSxxxx.  I am not sure if SN74LS is same as 74LSxxxx.
    I am not an electronic expert, but I have knowledge of basic electronic 
including Ohm's Law and Digital Circuit.
    I am interested to sample 16 color 4 bits data from address bus 16 bits 
and data bus 8 bits into R, G, B data and H/V sync data.  I use R, G, B and 
H/V sync to construct correct color which it is very fine resolution than 
NTSC resolution on Emulator project.
    I can tell that double high resolution color data is always wrong in 
most emulator projects, but it is very close.  I believe that RGB Card helps 
to provide me the information so it helps to construct double high 
resolution color data 100% accurate from RGB Card.
    Can you please help leading me to the proper electronic website?  It 
would help me to get deep information about TTL chips.

Bryan Parkoff