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 The RETROF series of homemade TTL computer. 
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Joined: Tue Dec 18, 2018 11:25 am
Posts: 21
Location: Hampshire, UK.
In Japan in 1978 Gataro Sido attempted to make a computer with TTL, the RETORO-16. http://tiny.cc/acmjjz
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Although this was the first time I tried to make my own computer in earnest, I had no basic knowledge at all and turned it into garbage.

1989; he tried again with the RETORO-16B.
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There is a memory that worked well only for fetching instructions, but it was turned into garbage without finishing.

2011; he completed the RETROF-8 (http://tiny.cc/y8ekjz), as well as the RETROF-BB and the RETROF-VGA.
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This machine was completed in August of that year, and has the performance of requiring 100 digits of pi even though it is 8bit.

2012; RETROF-16. http://tiny.cc/9dgkjz
2013; RETROF-16A.
2014; RETROF-16H (http://tiny.cc/54fkjz) and RETROF-SXGA.
2015; RETROF-16K. http://tiny.cc/mjokjz
2016; RETROF-16M. http://tiny.cc/ofmjjz
2017; RETROF-16N (abandoned), and RETROF-16R. http://tiny.cc/aemjjz
2018; RETRO-2020. http://tiny.cc/xpmjjz

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Mon Feb 03, 2020 11:28 pm
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