I write about the past, present, and future of technology across three sites. imapenguin.com explores retro computing and programming fundamentals, milkcrunch.com covers modern software development and engineering culture, and evadot.com examines commercial spaceflight and the new space movement.
Posts
- VIC's Revenge, the drop-in replacement for the VIC-20 VIC chip Part 1 · imapenguin
- Well this is good, turns out I do know how to create a B&W PAL (and NTSC) Composite/S-Video signal from scratch. My timings aren't quite right, but it's close. Good first crack though. #commodore #VIC20hacking #learnallthethings
- Package delivered from
- Actually read the manual for my scope yesterday. Turns out it’s crazy easy to trigger on a PAL horizontal scan line number. On 110 here you can clearly see the blinking cursor. Turns out RTFM is a good idea after all. #commodore
- Yes, even the KIM-1 (clone) can count to a couple quintillion with ease ;-) #commodore
- I read this cover to cover sitting by the river yesterday. Can’t recommend it enough.
- Current situation
- I think I've decided on a working codename. Logic analyzer ordered and shipped. I'm shooting for a working version in a year.
- 64 Bit Addition and Products on Commodore: The Wheat and Chessboard problem · imapenguin
- 8 Bit processors can count to 18 Quintillion just fine. "Wheat and chessboard problem" in 6502/10 Assembly for my "learn something every day" task. #commodore
- I tell myself I have some lofty career aspirations to justify my deep dive into learning to code FPGAs this year. But I know deep down it’s so I can try making drop in replacements for things like this, which I found in my stash. It tests good in my only NTSC VIC 20 #commodore
- I wonder where in my yard I should be looking for this package…
- Think I found the color film I’m adding to all of my 7 segment displays to help them show up better on phone cameras
- I own a couple dozen calculators. I checked and only two of them can multiply two 32-bit numbers and give me the full 64-bit product. The@NumWorks and TI Inspire. Oh, and a Commodore 64 if you can code in Assembly;-) #commodore
- I own a couple dozen calculators. I checked and only two of them can multiply two 32-bit numbers and give me the full 64-bit product. The@NumWorks and TI Inspire. Oh, and a Commodore 64 if you can code in Assembly;-) #commodore
- Always meant to read this series. Found em for a dollar so no time like the present.
- Vicky-20 S Video Mod Results · imapenguin
- Finally got around to doing the S-Video Mod on my Vicky-20. The results are pretty good. Probably about as good as you can get from a VIC-20 of any kind, so certainly nothing to complain about there. #commodore
- Had some fun last night playing with SYS parameters and learning a lot. Here's extending BASIC to implement a PRINT AT equivalent on Commodore 64/VIC-20 to do the 100 Door problem. Again ;-)
- Yet another version of the 100 door problem; this time, let's extend Commodore BASIC to add PRINT @ · imapenguin