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Calling 6502 assembly coders and reel to reel users

Anything to do with New Zealand Classic or Vintage Computing not covered in the other forums

Calling 6502 assembly coders and reel to reel users

by tezza » Sat Jan 19, 2013 7:03 am

Seen on my twitter feed.

Jason Scott, author of "Get Lamp" and "BBS:the documentary" will be in Auckland and Wellington in February and would like to interview people who code 6502 assembly, or use/used reel to reel tape. Contact Jason at (presumably) jason@textfiles.com
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Re: Calling 6502 assembly coders and reel to reel users

by mrad01 » Mon Feb 18, 2013 9:19 pm

Wow, I did quite a bit of 6502 about 30 years ago.... not so much these days.

The best "story" was a travelling salesman type algorithm which was written in Basic. It asked for a start town and a destination town in NZ. When you asked for the calculation, it generally took about 1-2 minutes in the main loop. Too slow.

I took the main calc loop and rewrote it using the assembler and it cut the time down to 3-10 seconds. Interpreted basic on the Apple II wasn't good at that stuff!

Those were the days....
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Re: Calling 6502 assembly coders and reel to reel users

by plaing » Mon Mar 18, 2013 10:11 pm

Same here did a bunch of 6502 coding for the OSI.

Lots of people just dont get the zen of it. Its all about using zero page addressing and lookup tables.

Ive spent some time reading apple assembly line - do a google for it. Theres examples of doing stuff faster and faster and fastet. The BYTE prime sieve is a good example, they shaved that time down humungously to the point that a little old 6502running at 1 mhz gave 68Ks and VAXes a run for their money...

That travelling salesman optimization sounds greally cool
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