Zitat von
berger
I did an entry on the Shachcomputer.info Wikipedia explaining what the "ROM serial" is, a code that uniquely identifies the ROM of one of these Hitachi microcontrollers:
https://www.schach-computer.info/wik...tle=ROM_serial
But suppose for a moment two chess computers with exactly the same chess engine, the same opening book, basically identical hardware in terms of processing speed, RAM, etc. but one running with pressure squares and the other with magnetic sensors. The ROM dump will be very different, and yet they will play the same or very similar!
That is why it is also very important to study and compare the games... playing. All this is complementary, necessary and very interesting. One work of study does not exclude the other. The research done by hap, or by other members of this forum who dedicate time to the disassembly and study of the code stored in the ROM, sheds light, supports suspicions or sometimes disproves something that had been taken as valid until then.
Best,
Gerardo
Hi Gerardo,
You wrote:
"But suppose for a moment two chess computers with exactly the same chess engine, the same opening book, basically identical hardware in terms of processing speed, RAM, etc. but one running with pressure squares and the other with magnetic sensors. The ROM dump will be very different, and yet they will play the same or very similar!"
It is the "very similar" which in this case I would be unsure about. Especially if it repeats itself occasionally in various tests that there is a move variation that occurs sometimes.
Are you able to read two ROM's through a program that highlights for example if it is binary were a 1101 was changed to 1011? The size overall would remain the exactly the same, but something had changed....even if it were by accident?
Or with ROMs and other chips are there not manufacturing tolerances (however minute) that could influence a slight deviation?
Asking as a layman, but with knowledge from Industry that everything has a tolerance for "pass" and "reject". Therefore, that means that even under "pass" there is a high and low "pass" that could influence some minor deviation on computer board A and same computer board B. Compound that by 20 different chips with (pass tolerances) = deviation might occur?
Layman's regards
Nick