.PS .nr VS \n(.v .nr PQ \n(.f .nr PS \n(.s .vs 6 .ft CW .ps 6 scale = 16/0.125 line from (0,-216) to (0,-216) line from (336,-184) to (336,-224) line from (432,-184) to (336,-184) line from (432,-168) to (432,-184) line from (416,-168) to (432,-168) "SO" rjust at (416,-168) "/reset-" ljust above at (304,-104) "oe-" ljust above at (120,-72) "PHIM" ljust at (184,-240) box ht 160 wid 104 with .nw at (184,-112) "opm" center above at (240,-192) "YM2151" center above at (240,-200) line from (184,-144) to (104,-144) "D?" ljust at (184,-144) line from (184,-160) to (104,-160) "CS-" ljust at (184,-160) line from (184,-176) to (104,-176) "WR-" ljust at (184,-176) line from (184,-192) to (104,-192) "RD-" ljust at (184,-192) line from (184,-208) to (104,-208) "A0" ljust at (184,-208) "IC-" ljust at (184,-224) line from (288,-168) to (352,-168) "SH[12]" rjust at (288,-248) line from (184,-240) to (104,-240) line from (288,-264) to (520,-264) "IRQ-" rjust at (288,-264) "fm_data" ljust above at (304,-168) "data<0:7>" ljust above at (120,-144) "wr-" ljust above at (120,-176) "rd-" ljust above at (120,-192) "a0" ljust above at (120,-208) "/reset-" ljust above at (120,-224) "opm_clk" ljust above at (120,-240) "interrupt-" ljust above at (304,-264) box dotted ht 264 wid 416 with .nw at (104,-24) "D<0:7>" rjust at (104,-144) "WR-" rjust at (104,-176) "RD-" rjust at (104,-192) "A0" rjust at (104,-208) "CLK" rjust at (104,-240) "INT-" ljust at (520,-264) "CS-" rjust at (104,-160) "cs-" ljust above at (120,-160) "SO" rjust at (288,-168) "hold[12]" ljust above at (304,-248) "PHI1" rjust at (288,-120) "dac_clk" ljust above at (304,-120) box ht 88 wid 64 with .nw at (352,-40) "SER" ljust at (352,-168) line from (288,-120) to (352,-120) "SRCLK" ljust at (352,-120) box ht 40 wid 64 with .nw at (352,-136) line from (352,-104) to (304,-104) "SRCLR-" ljust at (352,-104) "sr0" center above at (384,-152) "74LS595" center above at (384,-160) "sr[01]" center above at (384,-56) "74LS595" center above at (384,-64) "G-" ljust at (352,-72) line from (104,-72) to (352,-72) "RCLK" ljust at (352,-88) line from (416,-72) to (520,-72) "Q?" rjust at (416,-72) "OUT<00:15>" ljust at (520,-72) "OE-" rjust at (104,-72) "srbus<00:15>" ljust above at (432,-72) line from (104,-88) to (352,-88) "RCLK" rjust at (104,-88) "rclk" ljust above at (120,-88) line from (288,-248) to (520,-248) "HOLD[12]" ljust at (520,-248) line from (120,-224) to (184,-224) "" ljust above at (120,-224) box ht 40 wid 64 with .nw at (352,-192) line from (336,-224) to (352,-224) "SER" ljust at (352,-224) "sr1" center above at (384,-208) "74LS595" center above at (384,-216) .vs \n(VSu .ft \n(PQ .ps \n(PS .PE