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/ System Booster / System Booster.iso / Archives / HardwareProjects / AddDF2.lha / AddDF2+3 / df2+3.pic (.png)

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IFF Interleaved Bitmap Image  |  1995-06-25  |  20KB  |  640x768  |  1-bit (2 colors)

Labels: text | diagram | screenshot | circuit
OCR: 23-p D X-floppy connector on motherboard Pin 8 Pin 18 Pin 20 Pin 9 34-p floppy connector on our PCB 2 1 4 6 8 10 _SEL2 (_SEL3'> 12 (_MOTOR3) 14 _MOTOR2 16 SEL2 (_SEL3) _READY 34 33 VCC VCC VCC ↑ Build this autoconfig- logic on our PCB (or two, if you want two extra internal floppies...) ☐ 14 14 IN1 VCC C1 VCC 13 13 IN1 IN4 D1 C2 12 12 _01 IN4 CL1 D2 11 11 IN2 _04 $1 CL2 10 10 IN2 IN3 01 $2 9 9 02 IN3 _Q1 02 8 8 GND _03 GND _02 TTL 7438 =quad 2-input NAND TTL 7474 =dual D flip-flop Simple principle to connect DF2 and DF3 to a A1200 tower. Well, works on A500 tower, A2000 etc. as well. Mouse-drawn by ME 24.6.1995 2.30AM. Hauskaa Jussia!! Archy JP (DF2) (JP (DF3>> VCC 2 3 4 5 6 7 Į _SEL2 SEL2' (_SEL3'> (_SEL3) _MOTORX _IORESET MOTOR2 <_MOTOR3) _MOTORX IORESET _READY 2 3 4 5 6 7 VÇC I N

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