Labels:text | diagram | number | line | font | parallel OCR: EY1Z EYO R2 10k VERT RY1 RYO R3 2k J1 RX1 + RXO + X R1 HOR J2 300 EX1 EXO _VQ _H _HQ Amiga A4000 Mouse C- Commodore B0040796 74C14 9 11 13 14 Ⅱ J ㅋ I™ I IC1 4 6 8 spares R9 47 k 12 R4 47k F R5 R8 R6 R7 10000 4x 22k SW1 SW3 gnd Switches are the common 4 pin diaphragm tactile type though the PCB is wired for inline 3 pin (5mm spacing) microswitches also. There is a position for a middle switch (SW2). IC1 = MC 14584 BPC (Motorola), Hex Inverting Schmitt Trigger. Any will do. Note: In operation there is no difference between V etc and V, it makes no difference. It occurrs simply because an inverting buffer has been used, a non-inverting hex/quad schmitt- trigger buffer would do just as well, - even a quad voltage comparator with suitable cct changes. +5V NC C1 10μ gnd VQ V H HQ B1 B2 B3 30 ¹0 CABLE DB9F -07 03 -01 -02 -04 -06 -05 -09 -08 shield drain
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