corpus.blog
41554 blogs · [ { "id": "01a08786-6ac5-72b8-8e5a-a0d6eea439dc", "title": "Matrix Math on a Commodore 64", "url": "https://imapenguin.com/2026/06/matrix-math-on-a-commodore-64/", "published_at": "2026-06-08T14:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6ef115453", "title": "The SID Chip Is a Reservoir Computer", "url": "https://imapenguin.com/2026/06/the-sid-chip-is-a-reservoir-computer/", "published_at": "2026-06-03T00:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6efb51695", "title": "WOZMON, Eight CPUs, and a Paper Tape", "url": "https://imapenguin.com/2026/05/wozmon-eight-cpus-and-a-paper-tape/", "published_at": "2026-05-14T10:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f02c7bdd", "title": "Forty-Three Quintillion on a Commodore 64", "url": "https://imapenguin.com/2026/05/forty-three-quintillion-on-a-commodore-64/", "published_at": "2026-05-08T18:26:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f0998c48", "title": "Fixing a Timex Sinclair 2068 and Porting the Bond Maze", "url": "https://imapenguin.com/2026/04/fixing-a-timex-sinclair-2068-and-porting-the-bond-maze/", "published_at": "2026-04-30T18:24:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f099d1ae", "title": "Biological Processing Units and a Commodore 64", "url": "https://imapenguin.com/2026/04/biological-processing-units-and-a-commodore-64/", "published_at": "2026-04-24T15:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f14d35f3", "title": "Breaking Enigma with Index of Coincidence on a Commodore 64", "url": "https://imapenguin.com/2026/03/breaking-enigma-with-index-of-coincidence-on-a-commodore-64/", "published_at": "2026-03-31T12:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f19c6a8e", "title": "The Wallis Product for Pi on the C64", "url": "https://imapenguin.com/2026/03/the-wallis-product-for-pi-on-the-c64/", "published_at": "2026-03-14T09:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f24c093c", "title": "Enigma Ring Settings on the Commodore 64", "url": "https://imapenguin.com/2026/02/enigma-ring-settings-on-the-commodore-64/", "published_at": "2026-02-25T12:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f2bc7c56", "title": "Breaking Enigma on the Commodore 64", "url": "https://imapenguin.com/2026/02/breaking-enigma-on-the-commodore-64/", "published_at": "2026-02-24T12:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f3bbccde", "title": "Enigma Emulator on the Commodore 64", "url": "https://imapenguin.com/2026/02/enigma-emulator-on-the-commodore-64/", "published_at": "2026-02-20T12:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f446ee8e", "title": "10 PRINT on the Apple II", "url": "https://imapenguin.com/2026/01/10-print-on-the-apple-ii/", "published_at": "2026-01-15T23:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f47e96cc", "title": "The Math Behind Enigma", "url": "https://imapenguin.com/2026/01/the-math-behind-enigma/", "published_at": "2026-01-08T12:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f48979a8", "title": "Sorting Algorithms Visualized on the Commodore 64", "url": "https://imapenguin.com/2025/12/sorting-algorithms-visualized-on-the-commodore-64/", "published_at": "2025-12-17T10:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f4c6faf2", "title": "First Principles: Why You Must Learn Before You Prompt", "url": "https://imapenguin.com/2025/11/first-principles-why-you-must-learn-before-you-prompt/", "published_at": "2025-11-26T10:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f54b6740", "title": "Dorothy Vaughan: Adapt or Become Obsolete", "url": "https://imapenguin.com/2025/11/dorothy-vaughan-adapt-or-become-obsolete/", "published_at": "2025-11-24T10:00:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f5eda2d5", "title": "Three Maze Generators on the Commodore 64", "url": "https://imapenguin.com/2025/05/three-maze-generators-on-the-commodore-64/", "published_at": "2025-05-30T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f6dfdcad", "title": "16-bit Unsigned AND on Commodore 64", "url": "https://imapenguin.com/2025/05/16-bit-unsigned-and-on-commodore-64/", "published_at": "2025-05-20T11:19:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f7980342", "title": "The Best Book Cover of All Time", "url": "https://imapenguin.com/2025/05/the-best-book-cover-of-all-time/", "published_at": "2025-05-16T11:58:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f85cbdb5", "title": "10 PRINT for the KIM-1", "url": "https://imapenguin.com/2025/05/10-print-for-the-kim-1/", "published_at": "2025-05-16T11:19:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f958a5ab", "title": "10PRINT and 100 Doors on the PicoCalc from Clockwork Pi", "url": "https://imapenguin.com/2025/03/10print-and-100-doors-on-the-picocalc-from-clockwork-pi/", "published_at": "2025-03-26T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6f9b367da", "title": "PICO-8 100 Doors Problem", "url": "https://imapenguin.com/2025/01/pico-8-100-doors-problem/", "published_at": "2025-01-16T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fa2238f4", "title": "10 Print on PICO-8", "url": "https://imapenguin.com/2025/01/10-print-on-pico-8/", "published_at": "2025-01-10T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fa50cef0", "title": "Dragon Curves", "url": "https://imapenguin.com/2024/09/dragon-curves/", "published_at": "2024-09-13T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6faecab6c", "title": "10 PRINT in Rust vs C", "url": "https://imapenguin.com/2024/07/10-print-in-rust-vs-c/", "published_at": "2024-07-30T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fb7bae5d", "title": "wAx the VIC-20", "url": "https://imapenguin.com/2024/04/wax-the-vic-20/", "published_at": "2024-04-19T10:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fbed3355", "title": "10 PRINT on the HP-42s", "url": "https://imapenguin.com/2024/04/10-print-on-the-hp-42s/", "published_at": "2024-04-05T11:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fcd7f38a", "title": "The McNuggets Problem", "url": "https://imapenguin.com/2024/03/the-mcnuggets-problem/", "published_at": "2024-03-21T11:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fd4df2b6", "title": "Back to the basics with BASIC (and Python): Binary Search", "url": "https://imapenguin.com/2024/03/back-to-the-basics-with-basic-and-python-binary-search/", "published_at": "2024-03-13T12:06:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6fe2f6cc1", "title": "Machine Language: Count Faster on 6502", "url": "https://imapenguin.com/2024/01/machine-language-count-faster-on-6502/", "published_at": "2024-01-11T21:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6febf6112", "title": "Visualize and verify the reverse engineered Commodore 64 SID LFSR", "url": "https://imapenguin.com/2024/01/visualize-and-verify-the-reverse-engineered-commodore-64-sid-lfsr/", "published_at": "2024-01-03T10:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6ff24edb3", "title": "A Gentle Introduction to LFSRs", "url": "https://imapenguin.com/2023/12/a-gentle-introduction-to-lfsrs/", "published_at": "2023-12-21T11:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6ff64d833", "title": "Quick Post: Printing binary numbers in Commodore BASIC 2.0", "url": "https://imapenguin.com/2023/12/quick-post-printing-binary-numbers-in-commodore-basic-2.0/", "published_at": "2023-12-19T11:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d6ff67aafb", "title": "10 Print on the TI-92", "url": "https://imapenguin.com/2023/11/10-print-on-the-ti-92/", "published_at": "2023-11-30T11:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70064909e", "title": "A gentle introduction to two's complement", "url": "https://imapenguin.com/2023/11/a-gentle-introduction-to-twos-complement/", "published_at": "2023-11-21T16:30:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7012e74c8", "title": "N-Queens problem", "url": "https://imapenguin.com/2023/10/n-queens-problem/", "published_at": "2023-10-12T13:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7020e5ed8", "title": "Rail Fence Cipher on Commoodore 64 and TI 99/4A", "url": "https://imapenguin.com/2023/09/rail-fence-cipher-on-commoodore-64-and-ti-99/4a/", "published_at": "2023-09-08T11:49:13+00:00" }, { "id": "01a0d8df-8751-71b3-b39f-daba1a77faf9", "title": "Rail Fence Cipher on Commoodore 64 and TI 99/4A", "url": "https://imapenguin.com/2023/09/rail-fence-cipher-on-commoodore-64-and-ti-99-4a/", "published_at": "2023-09-08T11:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d702f6da9e", "title": "A grid drawing rabbit hole", "url": "https://imapenguin.com/2023/08/a-grid-drawing-rabbit-hole/", "published_at": "2023-08-11T10:53:01+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d702fa89e6", "title": "10 PRINT on the Rockwell AIM 65", "url": "https://imapenguin.com/2023/06/10-print-on-the-rockwell-aim-65/", "published_at": "2023-06-28T11:03:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d703010554", "title": "Building a software serial bridge", "url": "https://imapenguin.com/2023/05/building-a-software-serial-bridge/", "published_at": "2023-05-05T11:02:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70324edb9", "title": "Blinkenlights", "url": "https://imapenguin.com/2023/03/blinkenlights/", "published_at": "2023-03-02T20:58:08+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7039d0b98", "title": "40 years on, this is still the best maze algorithm", "url": "https://imapenguin.com/2023/01/40-years-on-this-is-still-the-best-maze-algorithm/", "published_at": "2023-01-26T15:49:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70457314c", "title": "Validating Pilish", "url": "https://imapenguin.com/2022/12/validating-pilish/", "published_at": "2022-12-01T00:55:15+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d705504869", "title": "My mostly retro writing platform contenders in National Novel Writing Month for 2022 NaNoWriMo", "url": "https://imapenguin.com/2022/10/my-mostly-retro-writing-platform-contenders-in-national-novel-writing-month-for-2022-nanowrimo/", "published_at": "2022-10-21T12:10:52+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d705e9ef52", "title": "Adding very large integers in 8 Bit BASIC", "url": "https://imapenguin.com/2022/07/adding-very-large-integers-in-8-bit-basic/", "published_at": "2022-07-15T18:34:30+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d706ab4d55", "title": "MOS paper tape format", "url": "https://imapenguin.com/2022/07/mos-paper-tape-format/", "published_at": "2022-07-07T13:20:09+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d706c8d9c1", "title": "A little more speed from the 6502", "url": "https://imapenguin.com/2022/06/a-little-more-speed-from-the-6502/", "published_at": "2022-06-22T14:14:08+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d706f4c0fa", "title": "How fast can a 6502 transfer memory", "url": "https://imapenguin.com/2022/06/how-fast-can-a-6502-transfer-memory/", "published_at": "2022-06-14T13:53:13+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d707530440", "title": "Almost primes with TinyBASIC on the KIM-1 clone: PAL-1", "url": "https://imapenguin.com/2022/05/almost-primes-with-tinybasic-on-the-kim-1-clone-pal-1/", "published_at": "2022-05-25T19:26:44+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70851633d", "title": "VIC’s Revenge, the drop-in replacement for the VIC-20 VIC chip Part 1: Introduction, design goals, and FAQs", "url": "https://imapenguin.com/2022/05/vics-revenge-the-drop-in-replacement-for-the-vic-20-vic-chip-part-1-introduction-design-goals-and-faqs/", "published_at": "2022-05-15T16:19:30+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d708da1293", "title": "64 Bit Addition and Products on Commodore: The Wheat and Chessboard problem", "url": "https://imapenguin.com/2022/05/64-bit-addition-and-products-on-commodore-the-wheat-and-chessboard-problem/", "published_at": "2022-05-10T14:18:42+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7091f4fe0", "title": "Vicky-20 S Video Mod Results", "url": "https://imapenguin.com/2022/05/vicky-20-s-video-mod-results/", "published_at": "2022-05-05T10:37:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70925ef8a", "title": "Yet another version of the 100 door problem; this time, let's extend Commodore BASIC to add PRINT @, shall we?", "url": "https://imapenguin.com/2022/05/yet-another-version-of-the-100-door-problem-this-time-lets-extend-commodore-basic-to-add-print-@-shall-we/", "published_at": "2022-05-04T16:03:46+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d709b009b8", "title": "Simple exponents on an HP-16c", "url": "https://imapenguin.com/2022/03/simple-exponents-on-an-hp-16c/", "published_at": "2022-03-27T20:48:16+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70a3e6f21", "title": "Fibonacci 1-10 on the KIM-1 (and clones)", "url": "https://imapenguin.com/2022/03/fibonacci-1-10-on-the-kim-1-and-clones/", "published_at": "2022-03-24T11:20:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70a401b2f", "title": "The terrible random number generation in the Commodore 64 (and 128)", "url": "https://imapenguin.com/2022/03/the-terrible-random-number-generation-in-the-commodore-64-and-128/", "published_at": "2022-03-21T14:01:27+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70ae51d39", "title": "Getting green and amber screens from a MiniPET 40/80", "url": "https://imapenguin.com/2022/03/getting-green-and-amber-screens-from-a-minipet-40/80/", "published_at": "2022-03-16T10:58:16+00:00" }, { "id": "01a0d8df-8751-71b3-b39f-daba23b4930b", "title": "Getting green and amber screens from a MiniPET 40/80", "url": "https://imapenguin.com/2022/03/getting-green-and-amber-screens-from-a-minipet-40-80/", "published_at": "2022-03-16T10:58:16+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70b237a3f", "title": "Simple splitting the screen with two colors on the Commodore 64", "url": "https://imapenguin.com/2022/02/simple-splitting-the-screen-with-two-colors-on-the-commodore-64/", "published_at": "2022-02-28T14:54:33+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70bb2c654", "title": "A visual 100 Door Problem solution in Python", "url": "https://imapenguin.com/2022/01/a-visual-100-door-problem-solution-in-python/", "published_at": "2022-01-11T14:54:57+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70c02412f", "title": "Permutations of 1 to 9 in Python, BASIC, and 6502 Assembly", "url": "https://imapenguin.com/2021/12/permutations-of-1-to-9-in-python-basic-and-6502-assembly/", "published_at": "2021-12-20T12:54:06+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70c439686", "title": "Making and breaking codes Part 14- VIC Cipher on the Commodore VIC-20", "url": "https://imapenguin.com/2021/12/making-and-breaking-codes-part-14-vic-cipher-on-the-commodore-vic-20/", "published_at": "2021-12-16T18:54:56+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70ceea93f", "title": "Can you do Advent of Code on 8-Bit Machines?", "url": "https://imapenguin.com/2021/12/can-you-do-advent-of-code-on-8-bit-machines/", "published_at": "2021-12-14T22:47:39+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70dee3970", "title": "Quick Tower of Hanoi with Sound on the Commodore 64", "url": "https://imapenguin.com/2021/10/quick-tower-of-hanoi-with-sound-on-the-commodore-64/", "published_at": "2021-10-28T17:28:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70e10411a", "title": "Dice frequency", "url": "https://imapenguin.com/2021/10/dice-frequency/", "published_at": "2021-10-28T10:42:27+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70eaa663b", "title": "A week of diving a little deeper into my Atari 800XL", "url": "https://imapenguin.com/2021/10/a-week-of-diving-a-little-deeper-into-my-atari-800xl/", "published_at": "2021-10-08T00:30:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d70f6a24c1", "title": "Two weeks with a Coco 2 in September", "url": "https://imapenguin.com/2021/10/two-weeks-with-a-coco-2-in-september/", "published_at": "2021-10-06T00:13:22+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d710488046", "title": "Slot Game On Tandy TRS-80 Pocket Computer PC-4", "url": "https://imapenguin.com/2021/09/slot-game-on-tandy-trs-80-pocket-computer-pc-4/", "published_at": "2021-09-09T11:12:54+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7111ca02b", "title": "Calculating Pi via the Gregory-Leibniz series in BASIC on the Tandy Color Computer 2", "url": "https://imapenguin.com/2021/09/calculating-pi-via-the-gregory-leibniz-series-in-basic-on-the-tandy-color-computer-2/", "published_at": "2021-09-03T10:29:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7111f5f2a", "title": "Just for fun, the 100 door problem on several different systems", "url": "https://imapenguin.com/2021/08/just-for-fun-the-100-door-problem-on-several-different-systems/", "published_at": "2021-08-05T12:35:40+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71140a6a2", "title": "Recreational Math Challenge: Border Crossings - but on 40 year old computers", "url": "https://imapenguin.com/2021/07/recreational-math-challenge-border-crossings-but-on-40-year-old-computers/", "published_at": "2021-07-19T18:30:06+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d711618cab", "title": "Running Commodore 64 BASIC Programs on a PET", "url": "https://imapenguin.com/2021/07/running-commodore-64-basic-programs-on-a-pet/", "published_at": "2021-07-18T12:45:37+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d711970543", "title": "The CERBERUS 2080", "url": "https://imapenguin.com/2021/07/the-cerberus-2080/", "published_at": "2021-07-09T13:03:02+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d711d16dfb", "title": "Making and Breaking Ciphers with Commodore 64 - The Vigenère Cipher", "url": "https://imapenguin.com/2021/06/making-and-breaking-ciphers-with-commodore-64-the-vigen%C3%A8re-cipher/", "published_at": "2021-06-23T12:07:22+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71228533a", "title": "Making and breaking Ciphers on the Commodore 64, er VIC-20 - Lagged Fibonacci Sequence and a little Monte Carlo while embracing contraints", "url": "https://imapenguin.com/2021/06/making-and-breaking-ciphers-on-the-commodore-64-er-vic-20-lagged-fibonacci-sequence-and-a-little-monte-carlo-while-embracing-contraints/", "published_at": "2021-06-09T13:11:42+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7123d15cf", "title": "Quick Post: XOR in Commodore BASIC 2", "url": "https://imapenguin.com/2021/06/quick-post-xor-in-commodore-basic-2/", "published_at": "2021-06-03T20:24:50+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d712532165", "title": "Running the 8 Bit Show and Tell VIC-20 Super Expander Programming Challenge on the Commodore 64", "url": "https://imapenguin.com/2021/05/running-the-8-bit-show-and-tell-vic-20-super-expander-programming-challenge-on-the-commodore-64/", "published_at": "2021-05-19T14:50:56+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d712c8dc84", "title": "The retro pinout project", "url": "https://imapenguin.com/2021/05/the-retro-pinout-project/", "published_at": "2021-05-18T15:03:49+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d713b2fff1", "title": "Quick Post: Modulus in BASIC 2 without a cartridge", "url": "https://imapenguin.com/2021/05/quick-post-modulus-in-basic-2-without-a-cartridge/", "published_at": "2021-05-15T18:51:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d713e5082b", "title": "Making and breaking Ciphers on the Commodore 64 Part 12 - Pontifex - Solitaire from Cryptonomicon", "url": "https://imapenguin.com/2021/05/making-and-breaking-ciphers-on-the-commodore-64-part-12-pontifex-solitaire-from-cryptonomicon/", "published_at": "2021-05-13T14:26:23+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d714d7e6ce", "title": "Making and breaking Ciphers on the Commodore 64 Part 11 - One time pads on a Commodore 64, probably a bad idea", "url": "https://imapenguin.com/2021/05/making-and-breaking-ciphers-on-the-commodore-64-part-11-one-time-pads-on-a-commodore-64-probably-a-bad-idea/", "published_at": "2021-05-10T14:44:20+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d715d30434", "title": "Making and breaking Ciphers on the Commodore 64 Part 10 - Finding hash collisions with a type in game from 1984", "url": "https://imapenguin.com/2021/04/making-and-breaking-ciphers-on-the-commodore-64-part-10-finding-hash-collisions-with-a-type-in-game-from-1984/", "published_at": "2021-04-28T18:19:36+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d716ac6f9e", "title": "Making and Breaking Ciphers with Commodore 64 Part 9 - Finding Smallish Primes", "url": "https://imapenguin.com/2021/04/making-and-breaking-ciphers-with-commodore-64-part-9-finding-smallish-primes/", "published_at": "2021-04-26T17:48:47+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71797a353", "title": "Quick Post: Slow text on the Commodore", "url": "https://imapenguin.com/2021/04/quick-post-slow-text-on-the-commodore/", "published_at": "2021-04-22T11:23:01+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d718348d5d", "title": "The Commodore 64 N.O.O.C.U.L.A.R. futbal project", "url": "https://imapenguin.com/2021/04/the-commodore-64-n.o.o.c.u.l.a.r.-futbal-project/", "published_at": "2021-04-21T20:10:02+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d718b9584c", "title": "Making and breaking Ciphers on the Commodore 64 Part 8 - RC4", "url": "https://imapenguin.com/2021/04/making-and-breaking-ciphers-on-the-commodore-64-part-8-rc4/", "published_at": "2021-04-19T13:49:09+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d719696c04", "title": "The Nostalgia Files: My all time favorite book", "url": "https://imapenguin.com/2021/04/the-nostalgia-files-my-all-time-favorite-book/", "published_at": "2021-04-16T16:33:08+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d7199b21d4", "title": "Repairing a Commodore 128 and DIY Chris's RAM tester review", "url": "https://imapenguin.com/2021/04/repairing-a-commodore-128-and-diy-chriss-ram-tester-review/", "published_at": "2021-04-14T14:35:50+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d719d9fa9c", "title": "Making and breaking Ciphers on the Commodore 64 Part 7 - Pseudo Random with Linear Congruential Generators", "url": "https://imapenguin.com/2021/04/making-and-breaking-ciphers-on-the-commodore-64-part-7-pseudo-random-with-linear-congruential-generators/", "published_at": "2021-04-06T15:51:05+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d719ff4fec", "title": "Making and Breaking Ciphers with a Commodore 64 - Part 6: XOR is Magical - Data recovery", "url": "https://imapenguin.com/2021/04/making-and-breaking-ciphers-with-a-commodore-64-part-6-xor-is-magical-data-recovery/", "published_at": "2021-04-01T14:43:43+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71a629766", "title": "Finding the Prodigal Easter Egg inside the Easter Egg on a Commodore 64", "url": "https://imapenguin.com/2021/03/finding-the-prodigal-easter-egg-inside-the-easter-egg-on-a-commodore-64/", "published_at": "2021-03-29T14:38:00+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71b45a66f", "title": "Quick post: Determining length in Commodore Assembly", "url": "https://imapenguin.com/2021/03/quick-post-determining-length-in-commodore-assembly/", "published_at": "2021-03-29T13:15:11+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71bb88bbf", "title": "Benchmarking Retro Computers (mostly Commodore) with marginal methods", "url": "https://imapenguin.com/2021/03/benchmarking-retro-computers-mostly-commodore-with-marginal-methods/", "published_at": "2021-03-18T12:11:54+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71c09fde4", "title": "Jiffies in Assembly", "url": "https://imapenguin.com/2021/03/jiffies-in-assembly/", "published_at": "2021-03-18T00:02:20+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71c8d8156", "title": "Making and Breaking Ciphers with a Commodore 64 - Part 5: Wargames", "url": "https://imapenguin.com/2021/03/making-and-breaking-ciphers-with-a-commodore-64-part-5-wargames/", "published_at": "2021-03-16T15:36:57+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71d0a9a56", "title": "Calculating Pi via the Gregory-Leibniz series in BASIC on the VIC-20", "url": "https://imapenguin.com/2021/03/calculating-pi-via-the-gregory-leibniz-series-in-basic-on-the-vic-20/", "published_at": "2021-03-13T15:49:58+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71d5586ff", "title": "Quick Post: Commodore 64 Simple Addition Efficiency", "url": "https://imapenguin.com/2021/03/quick-post-commodore-64-simple-addition-efficiency/", "published_at": "2021-03-13T12:08:25+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71dcb29a2", "title": "c0pperdragon verdict", "url": "https://imapenguin.com/2021/03/c0pperdragon-verdict/", "published_at": "2021-03-10T14:23:17+00:00" }, { "id": "01a08786-6ac5-72b8-8e5a-a0d71e513e2b", "title": "Making and Breaking Ciphers with a Commodore 64 - Part 4: The PIN Program from Terminator 2", "url": "https://imapenguin.com/2021/03/making-and-breaking-ciphers-with-a-commodore-64-part-4-the-pin-program-from-terminator-2/", "published_at": "2021-03-08T16:44:54+00:00" } ] posts Claim your blog
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2^x bits | Imapenguin

imapenguin.com

2026

Matrix Math on a Commodore 64original ↗
8 Jun 2026
The SID Chip Is a Reservoir Computeroriginal ↗
3 Jun 2026
WOZMON, Eight CPUs, and a Paper Tapeoriginal ↗
14 May 2026
Forty-Three Quintillion on a Commodore 64original ↗
8 May 2026
Fixing a Timex Sinclair 2068 and Porting the Bond Mazeoriginal ↗
30 Apr 2026
Biological Processing Units and a Commodore 64original ↗
24 Apr 2026
Breaking Enigma with Index of Coincidence on a Commodore 64original ↗
31 Mar 2026
The Wallis Product for Pi on the C64original ↗
14 Mar 2026
Enigma Ring Settings on the Commodore 64original ↗
25 Feb 2026
Breaking Enigma on the Commodore 64original ↗
24 Feb 2026
Enigma Emulator on the Commodore 64original ↗
20 Feb 2026
10 PRINT on the Apple IIoriginal ↗
15 Jan 2026
The Math Behind Enigmaoriginal ↗
8 Jan 2026

2025

Sorting Algorithms Visualized on the Commodore 64original ↗
17 Dec 2025
First Principles: Why You Must Learn Before You Promptoriginal ↗
26 Nov 2025
Dorothy Vaughan: Adapt or Become Obsoleteoriginal ↗
24 Nov 2025
Three Maze Generators on the Commodore 64original ↗
30 May 2025
16-bit Unsigned AND on Commodore 64original ↗
20 May 2025
The Best Book Cover of All Timeoriginal ↗
16 May 2025
10 PRINT for the KIM-1original ↗
16 May 2025
10PRINT and 100 Doors on the PicoCalc from Clockwork Pioriginal ↗
26 Mar 2025
PICO-8 100 Doors Problemoriginal ↗
16 Jan 2025
10 Print on PICO-8original ↗
10 Jan 2025

2024

Dragon Curvesoriginal ↗
13 Sept 2024
10 PRINT in Rust vs Coriginal ↗
30 Jul 2024
wAx the VIC-20original ↗
19 Apr 2024
10 PRINT on the HP-42soriginal ↗
5 Apr 2024
The McNuggets Problemoriginal ↗
21 Mar 2024
Back to the basics with BASIC (and Python): Binary Searchoriginal ↗
13 Mar 2024
Machine Language: Count Faster on 6502original ↗
11 Jan 2024
Visualize and verify the reverse engineered Commodore 64 SID LFSRoriginal ↗
3 Jan 2024

2023

A Gentle Introduction to LFSRsoriginal ↗
21 Dec 2023
Quick Post: Printing binary numbers in Commodore BASIC 2.0original ↗
19 Dec 2023
10 Print on the TI-92original ↗
30 Nov 2023
A gentle introduction to two's complementoriginal ↗
21 Nov 2023
N-Queens problemoriginal ↗
12 Oct 2023
Rail Fence Cipher on Commoodore 64 and TI 99/4Aoriginal ↗
8 Sept 2023
Rail Fence Cipher on Commoodore 64 and TI 99/4Aoriginal ↗
8 Sept 2023
A grid drawing rabbit holeoriginal ↗
11 Aug 2023
10 PRINT on the Rockwell AIM 65original ↗
28 Jun 2023
Building a software serial bridgeoriginal ↗
5 May 2023
Blinkenlightsoriginal ↗
2 Mar 2023
40 years on, this is still the best maze algorithmoriginal ↗
26 Jan 2023

2022

Validating Pilishoriginal ↗
1 Dec 2022
My mostly retro writing platform contenders in National Novel Writing Month for 2022 NaNoWriMooriginal ↗
21 Oct 2022
Adding very large integers in 8 Bit BASICoriginal ↗
15 Jul 2022
MOS paper tape formatoriginal ↗
7 Jul 2022
A little more speed from the 6502original ↗
22 Jun 2022
How fast can a 6502 transfer memoryoriginal ↗
14 Jun 2022
Almost primes with TinyBASIC on the KIM-1 clone: PAL-1original ↗
25 May 2022
VIC’s Revenge, the drop-in replacement for the VIC-20 VIC chip Part 1: Introduction, design goals, and FAQsoriginal ↗
15 May 2022
64 Bit Addition and Products on Commodore: The Wheat and Chessboard problemoriginal ↗
10 May 2022
Vicky-20 S Video Mod Resultsoriginal ↗
5 May 2022
Yet another version of the 100 door problem; this time, let's extend Commodore BASIC to add PRINT @, shall we?original ↗
4 May 2022
Simple exponents on an HP-16coriginal ↗
27 Mar 2022
Fibonacci 1-10 on the KIM-1 (and clones)original ↗
24 Mar 2022
The terrible random number generation in the Commodore 64 (and 128)original ↗
21 Mar 2022
Getting green and amber screens from a MiniPET 40/80original ↗
16 Mar 2022
Getting green and amber screens from a MiniPET 40/80original ↗
16 Mar 2022
Simple splitting the screen with two colors on the Commodore 64original ↗
28 Feb 2022
A visual 100 Door Problem solution in Pythonoriginal ↗
11 Jan 2022

2021

Permutations of 1 to 9 in Python, BASIC, and 6502 Assemblyoriginal ↗
20 Dec 2021
Making and breaking codes Part 14- VIC Cipher on the Commodore VIC-20original ↗
16 Dec 2021
Can you do Advent of Code on 8-Bit Machines?original ↗
14 Dec 2021
Quick Tower of Hanoi with Sound on the Commodore 64original ↗
28 Oct 2021
Dice frequencyoriginal ↗
28 Oct 2021
A week of diving a little deeper into my Atari 800XLoriginal ↗
8 Oct 2021
Two weeks with a Coco 2 in Septemberoriginal ↗
6 Oct 2021
Slot Game On Tandy TRS-80 Pocket Computer PC-4original ↗
9 Sept 2021
Calculating Pi via the Gregory-Leibniz series in BASIC on the Tandy Color Computer 2original ↗
3 Sept 2021
Just for fun, the 100 door problem on several different systemsoriginal ↗
5 Aug 2021
Recreational Math Challenge: Border Crossings - but on 40 year old computersoriginal ↗
19 Jul 2021
Running Commodore 64 BASIC Programs on a PEToriginal ↗
18 Jul 2021
The CERBERUS 2080original ↗
9 Jul 2021
Making and Breaking Ciphers with Commodore 64 - The Vigenère Cipheroriginal ↗
23 Jun 2021
Making and breaking Ciphers on the Commodore 64, er VIC-20 - Lagged Fibonacci Sequence and a little Monte Carlo while embracing contraintsoriginal ↗
9 Jun 2021
Quick Post: XOR in Commodore BASIC 2original ↗
3 Jun 2021
Running the 8 Bit Show and Tell VIC-20 Super Expander Programming Challenge on the Commodore 64original ↗
19 May 2021
The retro pinout projectoriginal ↗
18 May 2021
Quick Post: Modulus in BASIC 2 without a cartridgeoriginal ↗
15 May 2021
Making and breaking Ciphers on the Commodore 64 Part 12 - Pontifex - Solitaire from Cryptonomiconoriginal ↗
13 May 2021
Making and breaking Ciphers on the Commodore 64 Part 11 - One time pads on a Commodore 64, probably a bad ideaoriginal ↗
10 May 2021
Making and breaking Ciphers on the Commodore 64 Part 10 - Finding hash collisions with a type in game from 1984original ↗
28 Apr 2021
Making and Breaking Ciphers with Commodore 64 Part 9 - Finding Smallish Primesoriginal ↗
26 Apr 2021
Quick Post: Slow text on the Commodoreoriginal ↗
22 Apr 2021
The Commodore 64 N.O.O.C.U.L.A.R. futbal projectoriginal ↗
21 Apr 2021
Making and breaking Ciphers on the Commodore 64 Part 8 - RC4original ↗
19 Apr 2021
The Nostalgia Files: My all time favorite bookoriginal ↗
16 Apr 2021
Repairing a Commodore 128 and DIY Chris's RAM tester revieworiginal ↗
14 Apr 2021
Making and breaking Ciphers on the Commodore 64 Part 7 - Pseudo Random with Linear Congruential Generatorsoriginal ↗
6 Apr 2021
Making and Breaking Ciphers with a Commodore 64 - Part 6: XOR is Magical - Data recoveryoriginal ↗
1 Apr 2021
Finding the Prodigal Easter Egg inside the Easter Egg on a Commodore 64original ↗
29 Mar 2021
Quick post: Determining length in Commodore Assemblyoriginal ↗
29 Mar 2021
Benchmarking Retro Computers (mostly Commodore) with marginal methodsoriginal ↗
18 Mar 2021
Jiffies in Assemblyoriginal ↗
18 Mar 2021
Making and Breaking Ciphers with a Commodore 64 - Part 5: Wargamesoriginal ↗
16 Mar 2021
Calculating Pi via the Gregory-Leibniz series in BASIC on the VIC-20original ↗
13 Mar 2021
Quick Post: Commodore 64 Simple Addition Efficiencyoriginal ↗
13 Mar 2021
c0pperdragon verdictoriginal ↗
10 Mar 2021
Making and Breaking Ciphers with a Commodore 64 - Part 4: The PIN Program from Terminator 2original ↗
8 Mar 2021
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