79 lines
1.6 KiB
Markdown
79 lines
1.6 KiB
Markdown
# Apple Disk II PROM Verify
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For test Disk II Interface Card
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<pre>
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341-0009 Apple Disk II 13 Sector Interface Card ROM P5 (BOOT)
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341-0010 Apple Disk II 13 Sector Interface Card ROM P6 (LOGIC)
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341-0027 Apple Disk II 16 Sector Interface Card ROM P5 (BOOT)
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341-0028 Apple Disk II 16 Sector Interface Card ROM P6 (LOGIC)
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341-0027-A Apple Disk II 16 Sector Interface Card ROM P5A 1981 (BOOT)
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342-0028-A Apple Disk II 16 Sector Interface Card ROM P6A 1981 (LOGIC)
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</pre>
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![Alt text](board.jpg)
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## Hardware requeriment:
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- Arduino IDE
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- Arduino Mega 2560
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## Compatibility with BIPOLAR PROMs:
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N82S135
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MMI 6309-1
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MMI 63S281
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TBP18S22
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TBP28L22
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MB 7118
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AM27S23
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74S471
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74LS471
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uPB421
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## Schema:
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<pre>
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------+--------------
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PROM | ARDUINO MEGA
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------+--------------
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VCC | +5V
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a0 | 22
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a1 | 24
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a2 | 26
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a3 | 28
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a4 | 30
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a5 | 27
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a6 | 25
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a7 | 23
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g1 | 31
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g2 | 29
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q0 | 32
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q1 | 34
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q2 | 36
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q3 | 38
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q4 | 39
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q5 | 37
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q6 | 35
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q7 | 33
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GND | GND
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------+--------------
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</pre>
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## Board to connect PROM:
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![Alt text](board_01.jpg)
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![Alt text](board_02.jpg)
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## Program check:
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### Valid PROM:
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![Alt text](valid.png)
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### Invalid PROM:
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![Alt text](invalid.png)
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This is free open-source software, distributed under a very liberal license
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(the well-known MIT license). It may be used for any purpose, including
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commercial purposes, at absolutely no cost. Just download it and use it.
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