Top Hackernews posts from www.righto.com

1. The tiny chip that powers Montreal subway tickets (www.righto.com)
   930 points by todsacerdoti 3 months ago | 508 comments
2. Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos (www.righto.com)
   418 points by picture almost 3 years ago | 131 comments
3. Teardown of a PC Power Supply (www.righto.com)
   407 points by picture over 3 years ago | 239 comments
4. Mining Bitcoin with pencil and paper: 0.67 hashes per day (2014) (www.righto.com)
   404 points by tusharchoudhary over 3 years ago | 378 comments
5. Apple iPhone charger teardown: quality in a tiny expensive package (2012) (www.righto.com)
   379 points by retskrad about 3 years ago | 273 comments
6. A bug fix in the 8086 microprocessor, revealed in the die's silicon (www.righto.com)
   365 points by _Microft almost 2 years ago | 97 comments
7. Reverse-engineering a tiny 1980s chip that plays Christmas tunes (www.righto.com)
   310 points by picture over 2 years ago | 64 comments
8. Examining the silicon dies of the Intel 386 processor (www.righto.com)
   280 points by Tomte 11 months ago | 62 comments
9. The Yamaha DX7 synthesizer's clever exponential circuit, reverse-engineered (www.righto.com)
   271 points by picture almost 3 years ago | 65 comments
10. How the 8086 processor's microcode engine works (www.righto.com)
    248 points by picture almost 2 years ago | 81 comments
11. Undocumented 8086 instructions, explained by the microcode (www.righto.com)
    242 points by kens about 1 year ago | 99 comments
12. Intel x86 documentation has more pages than the 6502 has transistors (2013) (www.righto.com)
    231 points by optimalsolver about 1 year ago | 105 comments
13. A look at the die of the 8086 processor (2020) (www.righto.com)
    217 points by guerrilla almost 3 years ago | 37 comments
14. Apple didn't revolutionize power supplies; new transistors did (2012) (www.righto.com)
    208 points by Rondom almost 3 years ago | 158 comments
15. Yamaha DX7 chip reverse-engineering, part 4: how algorithms are implemented (www.righto.com)
    202 points by Tomte almost 3 years ago | 48 comments
16. Reverse-engineering Ethernet backoff on the Intel 82586 network chip's die (www.righto.com)
    200 points by zdw 11 months ago | 34 comments
17. The transparent chip inside a vintage Hewlett-Packard floppy drive (www.righto.com)
    190 points by picture 9 months ago | 45 comments
18. The Intel 8088 processor's instruction prefetch circuitry: a look inside (www.righto.com)
    185 points by matt_d 6 months ago | 43 comments
19. Counting the transistors in the 8086 processor: it's harder than you might think (www.righto.com)
    175 points by zdw over 1 year ago | 39 comments
20. Reverse-engineering the multiplication algorithm in the Intel 8086 processor (www.righto.com)
    171 points by CoBE10 over 1 year ago | 34 comments
21. Reverse-engineering the Globus INK, a Soviet spaceflight navigation computer (www.righto.com)
    168 points by Stratoscope over 1 year ago | 57 comments
22. The microcode and hardware in the 8086 processor that perform string operations (www.righto.com)
    165 points by picture over 1 year ago | 96 comments
23. Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos (2021) (www.righto.com)
    160 points by throwup238 8 months ago | 39 comments
24. Reverse-engineering the electronics in the Globus analog navigational computer (www.righto.com)
    158 points by rcarmo over 1 year ago | 26 comments
25. 8086 Processor's microcode pipeline from die analysis (www.righto.com)
    157 points by picture over 1 year ago | 29 comments
26. Yamaha DX7 chip reverse-engineering, part V: the output circuitry (www.righto.com)
    156 points by picture over 2 years ago | 51 comments
27. “Space age electronics”: Inside a GE thin-film paperweight from the 1960s (www.righto.com)
    151 points by parsecs about 3 years ago | 33 comments
28. An unusual 7400-series chip implemented with a gate array (www.righto.com)
    150 points by codezero 6 months ago | 31 comments
29. Interesting double-poly latches inside AMD's vintage LANCE Ethernet chip (www.righto.com)
    148 points by elpocko 9 months ago | 17 comments
30. Simulating the IBM 360/50 mainframe from its microcode (www.righto.com)
    147 points by picture over 2 years ago | 100 comments
31. Strange chip: Teardown of a vintage IBM token ring controller (www.righto.com)
    146 points by picture over 3 years ago | 66 comments
32. How flip-flops are implemented in the Intel 8086 processor (www.righto.com)
    146 points by Tomte 12 months ago | 32 comments
33. The Globus INK: a mechanical navigation computer for Soviet spaceflight (www.righto.com)
    146 points by picture over 1 year ago | 32 comments
34. Silicon die teardown: a look inside an early 555 timer chip (www.righto.com)
    145 points by picture over 2 years ago | 42 comments
35. Inside a 20-Watt Traveling Wave Tube Amplifier from Apollo (www.righto.com)
    145 points by chmaynard about 3 years ago | 36 comments
36. Reverse engineering the Intel 386 processor's register cell (www.righto.com)
    145 points by picture 10 months ago | 28 comments
37. A one-bit processor explained: reverse-engineering the vintage MC14500B (www.righto.com)
    144 points by picture over 3 years ago | 45 comments
38. Reverse-engineering the conditional jump circuitry in the 8086 processor (www.righto.com)
    143 points by picture over 1 year ago | 38 comments
39. Yamaha DX7 reverse-engineering, part III: Inside the log-sine ROM (www.righto.com)
    142 points by rcarmo almost 3 years ago | 16 comments
40. Reverse-engineering a vintage power supply chip from die photos (www.righto.com)
    137 points by parsecs about 3 years ago | 39 comments
41. Teardown of a quartz crystal oscillator and the tiny IC inside (www.righto.com)
    136 points by picture over 3 years ago | 35 comments
42. A look inside the chips that powered the landmark Polaroid SX-70 instant camera (www.righto.com)
    136 points by picture over 2 years ago | 46 comments
43. Tracing the roots of the 8086 instruction set to the Datapoint 2200 minicomputer (www.righto.com)
    135 points by matt_d about 1 year ago | 49 comments
44. The Intel 386 processor die: the clock circuit (www.righto.com)
    133 points by picture 10 months ago | 15 comments
45. The digital ranging system that measured the distance to the Apollo spacecraft (www.righto.com)
    131 points by picture over 2 years ago | 36 comments
46. TROS: How IBM mainframes stored microcode in transformers (2019) (www.righto.com)
    128 points by detaro over 3 years ago | 28 comments
47. Reverse-engineering the division microcode in the Intel 8086 processor (www.righto.com)
    127 points by picture over 1 year ago | 27 comments
48. Inside the 8086 processor's instruction prefetch circuitry (www.righto.com)
    127 points by klelatti over 1 year ago | 39 comments
49. Reverse-engineering the 8086 processor's address and data pin circuits (www.righto.com)
    127 points by picture about 1 year ago | 20 comments
50. The complex history of the Intel i960 RISC processor (www.righto.com)
    126 points by zdw about 1 year ago | 68 comments
51. Teardown of a quartz crystal oscillator and the tiny IC inside (www.righto.com)
    123 points by ivanvas about 2 years ago | 25 comments
52. Soyuz spacecraft digital clock teardown (www.righto.com)
    120 points by nucatus over 3 years ago | 34 comments
53. Reverse-engineering an unusual IBM modem board from 1965 (www.righto.com)
    118 points by picture almost 3 years ago | 20 comments
54. X-ray reverse-engineering a hybrid module from 1960s Apollo test equipment (www.righto.com)
    117 points by PaulHoule about 2 years ago | 30 comments
55. Christmas shopping the IBM way: computerized gift selection in 1962 (www.righto.com)
    115 points by picture over 2 years ago | 15 comments
56. The unusual bootstrap drivers inside the 8086 microprocessor chip (www.righto.com)
    114 points by picture almost 2 years ago | 12 comments
57. Reverse-engineering a mysterious Univac computer board (www.righto.com)
    113 points by picture over 2 years ago | 27 comments
58. Two interesting XOR circuits inside the Intel 386 processor (www.righto.com)
    112 points by _Microft 9 months ago | 13 comments
59. The Apple-1's unusual MOS clock driver chip (www.righto.com)
    109 points by picture over 2 years ago | 23 comments
60. Talking to memory: Inside the Intel 8088 processor's bus interface state machine (www.righto.com)
    108 points by todsacerdoti 5 months ago | 9 comments
61. Booting the IBM 1401: How a 1959 punch-card computer loads a program (www.righto.com)
    107 points by CaliforniaKarl over 3 years ago | 44 comments
62. Surprises in the Bitcoin blockchain and how they are stored (2014) (www.righto.com)
    106 points by picture over 2 years ago | 70 comments
63. Reverse-engineering an airspeed/Mach indicator from 1977 (www.righto.com)
    105 points by picture over 1 year ago | 27 comments
64. Talking with the Moon: Inside Apollo's premodulation processor (www.righto.com)
    104 points by picture over 2 years ago | 25 comments
65. IBM paperweight teardown: Reverse-engineering 1970s memory chips (www.righto.com)
    104 points by parsecs over 3 years ago | 36 comments
66. Reverse-engineering the LM185 voltage reference chip and its bandgap reference (www.righto.com)
    103 points by picture over 2 years ago | 31 comments
67. The Apple-1's shift-register memory (www.righto.com)
    102 points by kens over 2 years ago | 55 comments
68. Yamaha DX7 chip reverse-engineering, part 6: the control registers (www.righto.com)
    101 points by picture over 2 years ago | 37 comments
69. Reverse-engineering the waveform generator in a 1969 breadboard (www.righto.com)
    100 points by picture over 2 years ago | 27 comments
70. Reverse-engineering a 1960s hybrid flip flop module with X-ray CT scans (www.righto.com)
    99 points by zdw about 2 years ago | 26 comments
71. Silicon reverse-engineering: the Intel 8086 processor's flag circuitry (www.righto.com)
    98 points by zdw over 1 year ago | 24 comments
72. How the 8086 processor determines the length of an instruction (www.righto.com)
    97 points by picture over 1 year ago | 24 comments
73. Reverse-engineering the Intel 8086 processor's HALT circuits (www.righto.com)
    96 points by picture over 1 year ago | 28 comments
74. Reverse-engineering the classic MK4116 16-kilobit DRAM chip (2020) (www.righto.com)
    96 points by nickt 12 months ago | 20 comments
75. The x86's Decimal Adjust after Addition (DAA) instruction (www.righto.com)
    96 points by zdw over 1 year ago | 63 comments
76. Texas Instruments TMX 1795: the almost first, forgotten microprocessor (2015) (www.righto.com)
    86 points by lproven almost 2 years ago | 43 comments
77. Germanium transistors: logic circuits in the IBM 1401 computer (www.righto.com)
    85 points by parsecs over 3 years ago | 55 comments
78. A dozen USB chargers in the lab: Apple is good, but not quite the best (2012) (www.righto.com)
    84 points by pwg over 1 year ago | 56 comments
79. Reverse-Engineering the Mechanical Bendix Central Air Data Computer (www.righto.com)
    83 points by picture 12 months ago | 35 comments
80. A transistorized shift register box, built in 1965 for Apollo testing (www.righto.com)
    80 points by parsecs over 3 years ago | 31 comments
81. Reverse-engineering the interrupt circuitry in the Intel 8086 processor (www.righto.com)
    80 points by pwg over 1 year ago | 8 comments
82. Reverse-engineering the ModR/M addressing microcode in the Intel 8086 processor (www.righto.com)
    79 points by picture over 1 year ago | 22 comments
83. Two dies in one package: Teardown of a vintage ROM with double the storage (www.righto.com)
    78 points by parsecs over 3 years ago | 13 comments
84. Reverse-engineering a vintage comparator chip (www.righto.com)
    76 points by pwg over 3 years ago | 10 comments
85. MacBook charger teardown: The surprising complexity inside Apple's power adapter (2015) (www.righto.com)
    76 points by ViktorRay 6 months ago | 107 comments
86. Examining a technology sample kit: IBM components from 1948 to 1986 (www.righto.com)
    75 points by zdw over 3 years ago | 20 comments
87. A one-bit processor explained: reverse-engineering the vintage MC14500B (www.righto.com)
    74 points by _lnwk about 2 years ago | 31 comments
88. Reverse-engineering the Apollo spacecraft's FM radio (www.righto.com)
    73 points by lycopodiopsida about 2 years ago | 19 comments
89. Reverse-engineering the register codes for the 8086 processor's microcode (www.righto.com)
    73 points by wglb over 1 year ago | 21 comments
90. A close look at the 8086 processor's bus hold circuitry (www.righto.com)
    61 points by Tomte about 1 year ago | 14 comments
91. The Group Decode ROM: The 8086 processor's first step of instruction decoding (www.righto.com)
    61 points by zdw over 1 year ago | 20 comments
92. The mechanical Bendix Air Data Computer, part 3: pressure transducers (www.righto.com)
    60 points by picture 8 months ago | 17 comments
93. IBM, sonic delay lines, and the history of the 80×24 display (www.righto.com)
    57 points by rbanffy 7 months ago | 31 comments