I'm using IDA for disassembly and DOSBox-X for debugging, still kinda learning the ropes in 16-bit DOS disassembly but am finding the right tools actually work pretty well, at least in a lot of cases.
I looked at the 386 version (32 bit) of the Blue Wave mail reader and IDA did a great job of decompiling the key check function - I was very impressed - I was even able to copy and paste parts of the code from the decompilation into a keygen. Too bad IDA doesn't decompile 16-bit code - I may have to look into Ghidra sometime for that.
The MS-DOS debugger (DEBUG) is also surprisingly useful and powerful, considering its humble stature as 'some old thing in the DOS directory'. ;) Using the DOSBox-X debugger has advantages, but the simple DOS DEBUG utility was enough to figure out a couple keygens too.
Adding solder mask is an optional step. If you use an etch resist like toner or dry film, you have a functional PCB even without solder mask. The solder mask is the unnecessary step that can be skipped.
Using solder mask as an etch resist, you would have to scrape away the remaining mask in areas where you want exposed pads - you would either need another mask for this, or to manually scrape each pad, adding an unnecessary step.
Speaking of Contra - there is a new Contra out March 12, 2024 (today! or tomorrow depending on timezone), Contra: Operation Galuga. I haven't played the game yet, but the trailer looks amazing!
Some 'getting started' suggestions:
Telnet BBS Guide has over a thousand BBSes listed, most are accessible by telnet. Syncterm is a great terminal program for BBS use, with Linux/Mac/Windows versions available. Other telnet clients can be used, but many BBSes use ANSI and CP437 and not UTF8. (other BBSes use other standards like ATASCII or PETSCII, Syncterm supports many of these.)
There are a bunch of interesting BBSes, one I'd recommend is 20 For Beers, connect to it at 20forbeers.com:1337. Plenty of great ANSI art and active message areas and a huge file collection too. I also recommend checking out the fsxNet message areas, they are shared across many BBSes and have an active community.
This is so cool to see posted here! I'm the guy that broke my usual don't-post-on-reddit rule to share a keygen for Buccaneer. It really is a fun game, too, even if it can be a bit brutal (this is the third day in a row my ship got sunk!).
There continues to be a thriving community of BBS users and sysops, there is a mix of new software and mods along with the old (there are CBBS systems operating - that is the original BBS software created in the late 1970s!). The fsxNet echomail network is great, linking a lot of active BBSes together and with good conversation and lots of help for retro-tech issues and projects.
If you're interested in playing Buccaneer online, The Fool's Quarter BBS has the game online. Another interesting BBS to check out is 20 For Beers reachable via telnet at 20forbeers.com:1337.
Clever photo, great idea. The "flame" effect is brilliant. Thanks for sharing!
Although to many of us who aren't engineers, some of the rules may not be obvious and it may look like an honest oversight - if you know any engineers, they have these rules absolutely drilled into them by the time they've earned a degree.
For someone with no engineering background to make a mistake like this is easy to explain. When someone with an engineering degree does it - they absolutely did know what they were doing is against professional regulations.
David Hilderman is a liar.
I like this, the tilted camera adds a "fun" aspect, the low perspective captures the bird well, pretty colours in the background, the softness of the background is great as well, nice separation of foreground and background without destroying the background. Also, the bird is not smoking, so it is nice to see it following the rules. Good balance of chaos and rules. Thanks for sharing.
The animation with the C:\ prompt is great! I hadn't seen this before, but that's one of the all-time greatest game openings!
Sam Zeloof (http://sam.zeloof.xyz/) has been working in the area of DIY semiconductor fabrication, and has successfully fabricated working ICs (from 6 - 100 transistors). He's done an incredible job at reaching ~1970's technology levels in a home lab.
Another example of DIY fabrication: https://hackaday.com/2010/03/10/jeri-makes-integrated-circuits/ Jeri Ellsworth made her own silicon inverter.
These examples are still very small-scale compared to even simple microprocessors, etc - but it's fascinating to see this level of technology becoming more accessible.
One of the photographers mentioned is Simon d'Entremont from Nova Scotia.
Simon d'Entremont has an excellent YouTube channel where he shares photography tips and techniques. As I've started learning about photography, Simon's videos are the resource I have gained most from. I can't recommend them enough to anyone learning or growing photography skills.