Callipygous Posted September 24, 2002 Share Posted September 24, 2002 Just in case you thought the 6502 was old and no longer used: http://www.westerndesigncenter.com/about.html Apparently they still sell a few hundred thousand a year for toys, cars, appliances etc. Quote Link to comment Share on other sites More sharing options...
Joey Kay Posted September 24, 2002 Share Posted September 24, 2002 Wow! I don't know how you found that out, but... I'll be damned! Cheers! Joey Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted September 29, 2002 Share Posted September 29, 2002 and on the 6502 product info page you find this quote "...with its legendary instruction set..." yes... LDA, LDX, STA ruled the world... hve ps. the company seems very small??? compared to intel... well...i should have IP as well...just living from the licenses... Quote Link to comment Share on other sites More sharing options...
Callipygous Posted September 30, 2002 Author Share Posted September 30, 2002 ps. the company seems very small??? compared to intel... well...i should have IP as well...just living from the licenses... Yeah, the owner is a real "mensch" (German and Yiddish speakers will understand) Quote Link to comment Share on other sites More sharing options...
Maury Markowitz Posted October 3, 2002 Share Posted October 3, 2002 Just in case you thought the 6502 was old and no longer used: http://www.westerndesigncenter.com/about.html Apparently they still sell a few hundred thousand a year for toys, cars, appliances etc. Funny, because I was just talking to him on the phone yesterday for my wikipedia article. He said the main use now is medical equipment controllers, followed by car dashboards, and then modems. http://www.wikipedia.org/wiki/MOS_Technologies Maury Quote Link to comment Share on other sites More sharing options...
Callipygous Posted October 3, 2002 Author Share Posted October 3, 2002 Maury, Excellent article! I did not know about the wikipedia at all. It still amazes me that a CPU could have such staying power. Granted that its in a different niche but still around after 25 years Quote Link to comment Share on other sites More sharing options...
Retro Rogue Posted October 5, 2002 Share Posted October 5, 2002 Maury,Excellent article! I did not know about the wikipedia at all. It still amazes me that a CPU could have such staying power. Granted that its in a different niche but still around after 25 years Doesn't surprise me, Zilog still sells the Z80 as well (although in faster, enhanced formats). www.zilog.com Quote Link to comment Share on other sites More sharing options...
Maury Markowitz Posted October 17, 2002 Share Posted October 17, 2002 Maury,Excellent article! I did not know about the wikipedia at all. It still amazes me that a CPU could have such staying power. Granted that its in a different niche but still around after 25 years Yeah, the wiki kicks ass. It's definitely the best thing to come along since google. Maury Quote Link to comment Share on other sites More sharing options...
welshleo Posted November 16, 2002 Share Posted November 16, 2002 I was looking at the 6502 a few days ago since I've got an urge to design and build my own 6502 computer. What I discovered surprised me. There is at least one US company that produces its own 6502 processors (the G65SC02) with speeds up to 6Mhz, as well as their own 65xx series VIA, PIA and comms interface chips. What I did find mind-boggling was a Taiwanese company producing 6502 instruction-set compatible microcontrollers with 28 I/O pins and built in USB!! I think you need to take into account the age of the architecture. 2 billion units sold doesn't seem quite so much then. Haven't found anyone who still produces the 65816 yet, though. Quote Link to comment Share on other sites More sharing options...
Callipygous Posted November 17, 2002 Author Share Posted November 17, 2002 Leo, the 2 billion did not surprise, but the fact that the chip lasted long enough to sell that many did. Good info on the 6502 compatibles. Keep us informed on the computer you design and good luck with the project. Quote Link to comment Share on other sites More sharing options...
Thelen Posted November 17, 2002 Share Posted November 17, 2002 What number has the 6502 compatible microcontroller ?. and about your micro-computer, what are you going to use as a screen/ to visiualize ? Thelen Quote Link to comment Share on other sites More sharing options...
welshleo Posted November 17, 2002 Share Posted November 17, 2002 The 6502 microcontrollers are manufactured by this company: http://www.weltrend.com (only one L ) They're marketing them as monitor controllers (presumably USB I/O and on-screen display). Just tried them now and their servers seemed to be down. However, many of their products seem to be 6502-based so just have a browse through the datasheets for an idea of what they produce. At the moment the 6502 computer project is on hold until after Christmas due to funds. I have no idea what I'm going to use for visualisation at the moment and only have a rough idea of what I'm going to do as a whole. There are several similar projects on the net so this will be just one of many. Having said that, I suppose my main wish would be for some genius to produce a VHDL or GAL version of the Atari's custom chips . Now for a quick question to the 8-bit techies here ... I'm trying to figure out how to use the cartridge port for I/O. Anyone have any pointers for me? Quote Link to comment Share on other sites More sharing options...
Thelen Posted November 17, 2002 Share Posted November 17, 2002 if you write data to the ram area of the cart slot( $a000-$bfff), it should be standing there.. lda #$ff sta $a000 for that moment d0-d7 will be high at the cartridge port. Thelen Quote Link to comment Share on other sites More sharing options...
welshleo Posted November 18, 2002 Share Posted November 18, 2002 The only trouble is that it's too quick to detect on its own. Looks like I'll have to design a circuit to latch the output from a specific address. Ho hum. Out come the AND/NOT/OR gates Quote Link to comment Share on other sites More sharing options...
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