RC2014 Board 4 - 62256 RAM

2 layer board of 3.44 x 0.92 inches (87.4 x 23.3 mm).
Shared on July 31st, 2014 19:08

Note silkscreen says ROM. Should say RAM. My Bad!

RC2014 Board 6 - Serial IO

2 layer board of 3.69 x 0.87 inches (93.6 x 22.0 mm).
Shared on July 31st, 2014 18:52

Simple multiboard Z80 computer I designed for Retro Challenge 2014. For more info see http://www.sowen.com/category/retro-challenge/ Tested and working. Uses 74HCT04, MC68B50, MAX232, 1uf caps, 2k2 resistors for FTDI

RC2014 Board 5 - Clock & Reset

2 layer board of 0.82 x 1.04 inches (20.7 x 26.4 mm).
Shared on July 31st, 2014 18:52

Simple multiboard Z80 computer I designed for Retro Challenge 2014. For more info see http://www.sowen.com/category/retro-challenge/ Tested and working. Uses 74HCT04, 7.3728Mhz xtal, 22pf caps, R1=2.2K, R2=1M, R3=1k

RC2014 Board 3 - 27C512 ROM

2 layer board of 3.44 x 0.89 inches (87.4 x 22.6 mm).
Shared on July 31st, 2014 18:52

Simple multiboard Z80 computer I designed for Retro Challenge 2014. For more info see http://www.sowen.com/category/retro-challenge/ Tested and working. Uses 27C512 split in to 8 8k pages selectable by jumpers. 74LS32 for address decoding

RC2014 Board 2 - 27C64 ROM

2 layer board of 3.44 x 0.89 inches (87.4 x 22.6 mm).
Shared on July 31st, 2014 18:51

Simple multiboard Z80 computer I designed for Retro Challenge 2014. For more info see http://www.sowen.com/category/retro-challenge/ Tested and working. Uses 27C64 & 74LS32