Apple-2-HW/Apple-Disk-II-PROM-Verify
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README.md

Apple-Disk-II-PROM-Verify

Program to verify Apple Disk II PROM content v1.00

Date: 2019-09-16 João Ricardo Pagotto

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.