Viewing profile — mbbrutman

I got lucky here with the compiler detecting the problem given that it wasn't just limited to using a null pointer. Depending on the buffer offset being handed back, it could have …

Where is that published? I was using Github for references on DOS 4 as 3.3 isn't there yet. (Thanks in advance!)

I looked at the call before and after to see what they had set the buffer to, and they clearly set the buffer to point into what is code. The executable is only 5KB and it's tiny; …

Some day ... It took me months even just to get around writing up what I found ... I'm still puzzled by the jump on the segment register values. I need to trace through the entire …

Cute article, but I'm not quite sure how you missed the mTCP HTTPServ program ...

I took 30 seconds of video with the beeping and the screen scrolling for posterity. I'll get it posted somewhere.

I'm sure I can go for a few more years until the next patch ... On a more serious note, the web server is the problem here. I've tried to run long periods of time before but eventu…

Sadly the project is mostly unrelated to my day job. I started mTCP at least 6 years before joining Google and at most of my time at Google is spent on much less fun things. On the…

Maybe, with some qualifications. A machine that is powered on but serves almost no traffic would also qualify but not be terribly interesting. I'm just happy it's been surviving th…

Thanks ... I think people are having time-outs so it's not anywhere near close to perfect, but the machine has been running at 100% for five hours or so now and it is not crashing,…

There were several speeds of the V20, including the base version at 5Mhz. Using it as a drop-in replacement and keeping the system clock speed the same the NEC V20 would still give…

There is a fan internally in the machine, but it was placed to cool the 5.25" floppy drive when it was in use. I have more open space in this machine because I am using a 3.5" driv…

The machine continues to receive the hug of death .. especially with our friendly Europeans waking up. Have faith, it's still running. (And it's been surviving like this for four h…

I bought my first NEC V20 in 1986 or 1987. It was my first time touching the motherboard of a computer which made it nerve wracking, but they were very popular at the time. I bough…

http://floppy.museum also running mTCP HTTPServ, but on 80286 class hardware. (That was featured earlier this year on HN.)

Yeah, far too much for a little CPU like this. Never mind the horror of trying to port all of the libraries and keep them up to date. Although there are people are using Apache in …

486? Nah. 4.77Mhz NEC V20, which is just slightly faster than an 8088. This should tide you over: http://www.brutman.com/PCjr/pcjr_web_server.html The main page is the best link. Y…

The Xircom is pretty bad, as it costs a lot to do the I/O through the parallel port. Just using TCP/IP sockets (no disk access or processing) the machine can send and received abou…

A few things to consider here: * It's getting hammered. I didn't expect it to be this bad. * If it can't process things fast enough packets might be dropped. So the TCP/IP error ra…

No, it's a 2009 creation. When I started mTCP I did netcat first because it was simple. My first iteration of an IRC client wasn't much better than netcat. It has improved since th…

Yep, a PCjr. No parity bit on the memory even. I have a love/hate relationship with the Xircom adapter. It's portable and great for machines without ISA slots, but the max throughp…

FreeBSD is crusty, but is it really bad enough to compare to DOS 5.02? Besides, who needs 32 bits when 16 will do ... (Not serious.)