Author: John Coffey
Date: 14:58:44 03/09/00
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Saying that 6502 would really stink is in camparison to bigger processors. The 6502 was the king of the 8 bit world and the king of 8 bit chess computers in the 80's producing expert level chess. Now the H8 type chips are (as I understand it) single chip computers with RAM and ROM on the chip. I first saw H8 chess computers back in the 80's and I am somewhat surprised that they are still around. I have programmed 6502 but not H8. Given that it has a faster clock speed then it might be faster. I am not sure if the RISC helps or not, but chances are it does. The 6502 itself was practically a RISC with the pipelining. I suspsect that they use the H8 because the power consumption is lower or that it can go a higher clock speed. By the way, the 68000 has a 16 bit data bus with a 32 bit internal data bas. By my definition that is a 16 bit processor. They were better than 6502's for chess programming but not by a huge amount. (Instructions on 68000 take more clock cycles than the 6502. We did some tests for video game programming and found the two processors to be pretty equivalent in our speed tests.) John
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