pechay

5 ms·

1.
by pechay 4d ago
Great work! I love to read your articles. I'm curious to know - you say Intel's 8087 emulation code was a bit of a lump at 16KB, do you know if it emulated the 8087 microcode state machine or did it use a different strategy?
2.
by pechay 2mo ago
All C programs are interesting. The first potentially non-interesting program in C is interesting because it's the first non-interesting one. :)
3.
by pechay 1y ago
It's worth pointing out the Commodore Amiga had proper pre-emptive multitasking on a single M68000 all the way back in July '85
4.
by pechay 2y ago
Thank you for your incredibly detailed correction :)
5.
by pechay 2y ago
The ZX Spectrum ROM loader is 1500bps and some games loaded at over 3000. There wasn't any encoding, just straight-up 1s and 0s straight into RAM.
6.
by pechay 2y ago
The 68k has both signed and unsigned 32/16 bit divide instructions.
7.
by pechay 2y ago
We did this same experiment in school, with a tiny pinprick of oil, estimating the volume of the drop as a sphere, and a small water tank, and then estimated the area of oil slick as a circle.
8.
by pechay 2y ago
University of New South Whales!
9.
by pechay 3y ago
If everyone starts using cheap off-peak power, will it continue to be cheap?
10.
by pechay 3y ago
The Amiga didn't have any hardware assistance for scaling sprites, so almost certainly the former.
11.
by pechay 3y ago
pizza isn't, and can't be, opaquely modified by the topping adder this way.
12.
by pechay 3y ago
I don't like the side effects of the second addToppings. I'd much prefer pizza.Toppings = getToppings(kind string)
13.
by pechay 3y ago
I've stayed in over fifty Airbnb in the last three years. Only three haven't worked out (misleading apartment, mouse-poop kitchen, unresponsive host). Each time Airbnb has sorted me out with a refund, called me to discuss the prob
14.
by pechay 3y ago
If you're certain it's what you want, don't accept no for an answer and keep hassling the school or college at different levels and see if you can still make it happen.
15.
by pechay 3y ago
Do you ever buy alcohol?
16.
by pechay 3y ago
The RCM is fantastic, definitely worth a visit, and Andy who runs the place is a legend.
17.
by pechay 3y ago
I think unrolled FILD/FIST was fastest on Pentium.
18.
by pechay 3y ago
Similarly, the manual that came with the original ZX Spectrum rubber key version was awesome, with a complete description of Sinclair BASIC and all the Z80 assembler op codes for good luck. The 48k+ manual that followed was nowhere near as
19.
by pechay 4y ago
Disable JavaScript also works.
20.
by pechay 4y ago
Make sure you are paid and bonused properly regardless of any future exit, because most startups never get there. In CTO role you should get something at the exit too, because you are likely to be instrumental in that success. Because compa
21.
by pechay 4y ago
You are comparing file IO, string to int, raw processing, and text output speed all at the same time. There are pros and cons associated with the choices made in both sets of libraries and compilers for each of those aspects. What exactly a
22.
by pechay 4y ago
Explore the limits of your responsibility and find out where you can make your life easier. Find allies in other parts of the business; politics are a fact of life in any big business. Carefully choose which hills are worth fighting for.
23.
by pechay 5y ago
Aside from looking at changes in your dev methods, this is a good way to demonstrate to your management the value of having fast, up to date hardware on your desk.
24.
by pechay 5y ago
If OP wants to work abroad in the future - where I come from getting a skilled visa having a degree is an advantage. Not having a degree is not a problem either. But trying to get a visa having dropped out definitely counts against you.
25.
by pechay 5y ago
Once had my Australian production system go down because a js plugin we were using had added .au to its list of media types. Integration had a different TLD. Response I got from the author was 'LOL!'. :)
26.
by pechay 5y ago
The other solutions based on file locking tools all seemed fragile. You have to change _something_!
27.
by pechay 5y ago
Add and verify a last_started and last_completed time to your local database.
28.
by pechay 6y ago
It is almost compulsory for a demo scrolltext to include "greets" to other demo groups and members and "f*kings" to those you don't like or have done something lame. Very useful to have a special symbol for that!
29.
by pechay 7y ago
1. MOV AL, BYTE PTR [RDI] MOV EBX, EAX // partial register stall 2. MOVZX EAX, BYTE PTR [RDI] AND EAX, 0xFFFFFF00 MOV EBX, EAX // no partial register These don't do the same thing
30.
by pechay 7y ago
Must be a good teaching problem seeing as it's generated such a large amount of interesting discussion.

More ›