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Apple-Disk-II-PROM-Verify
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README.md

Apple Disk II PROM Verify

For test Disk II Interface Card

Alt text

Hardware requeriment:

  • Arduino IDE
  • Arduino Mega 2560

Compatibility with BIPOLAR PROMs:

N82S135 MMI 6309-1 MMI 63S281 TBP18S22 TBP28L22 MB 7118 AM27S23 74S471 74LS471 uPB421

Schema:

------+--------------
PROM | ARDUINO MEGA
------+--------------
VCC | +5V
a0 | 22
a1 | 24
a2 | 26
a3 | 28
a4 | 30
a5 | 27
a6 | 25
a7 | 23
g1 | 31
g2 | 29
q0 | 32
q1 | 34
q2 | 36
q3 | 38
q4 | 39
q5 | 37
q6 | 35
q7 | 33
GND | GND
------+--------------

Board to connect PROM:

Alt text

Alt text

Program check:

Valid PROM:

Alt text

Invalid PROM:

Alt text

This is free open-source software, distributed under a very liberal license (the well-known MIT license). It may be used for any purpose, including commercial purposes, at absolutely no cost. Just download it and use it.