Linked by Thom Holwerda on Wed 3rd Apr 2013 21:45 UTC
Apple "Thanks to 35-year-old documents that have recently surfaced after three-plus decades in storage, we now know exactly how Apple navigated around that obstacle to create the company's first disk operating system. In more than a literal sense, it is also the untold story of how Apple booted up. From contracts - signed by both Wozniak and Jobs - to design specs to page after page of schematics and code, CNET had a chance to examine this document trove, housed at the DigiBarn computer museum in California's Santa Cruz Mountains, which shed important new light on those formative years at Apple."
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by TempleOS on Thu 4th Apr 2013 11:34 UTC
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Umm... for those who don't understand why trig is a big deal, the 6502 didn't even have MUL or DIV! Someone thought I was stupid. They have no idea how to make a Sin or Cos from add, subtract and shift.

Reply Score: 1

RE: Trig
by Al2001 on Thu 4th Apr 2013 13:41 in reply to "Trig"
Al2001 Member since:


Because you're still banging on about the one troll that modded you down and it's killing the thread. Please stop.

Reply Parent Score: 3

RE: Trig
by Alfman on Thu 4th Apr 2013 15:08 in reply to "Trig"
Alfman Member since:


I've canceled out some of the negative votes, I'd like to diffuse this as much as possible. Let me welcome you to osnews. I have no idea why your original post went negative, but one thing you should bare in mind is that many of us regulars are critical of the voting system because the rules are so convoluted that they don't mean very much and in some cases it seems likely that the trolls are using duplicate voting accounts.

Although in the future try to stop yourself from generalizing over our collective ignorance ;)

It's good to see other OS devs around. I'm experienced with x86, never touched the motorola's.

"Umm... for those who don't understand why trig is a big deal, the 6502 didn't even have MUL or DIV"

mul and div are easy to emulate, but the performance must have been awful no? I am curious what algorithm you chose for trigonometry. A polynomial expansion of the taylor series would seem to be very expensive on a processor that lacks native floating point. My own gut tells me that a small lookup table combined with linear or cubic interpolation would give enough accuracy for the majority of graphing purposes. Would you elaborate on your algorithm?

Reply Parent Score: 2