#21
21.12.2023, 22:46
| Folgender Benutzer sagt Danke zu mclane für den nützlichen Beitrag: | ||
kamoj (22.12.2023) | ||
#22
25.12.2023, 16:58
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Re: Mephisto T+T (im Academy)
Nota: Es ist bereits vorhanden in CB-Emu pakket.
As was already mentioned before, one of the EPROMS says "polgar". I think this may be (based on) the bookrom part of the first version of Polgar. It's partially unused in Mephisto T+T. Does someone have a dump of first version of Polgar? Or have a this chesscomputer in possession? Does the test mode (MEM->INFO) say "TEST-PROGRAMM" instead of displaying the version number? I'm not sure this is a prototype of Polgar. A prototype of Polgar would make more sense on Polgar hardware. Geändert von hap (25.12.2023 um 17:05 Uhr) 
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#23
25.12.2023, 18:18
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AW: Mephisto T+T (im Academy)
[Event "first testgame"] [Site "SCW"] [Date "2023.12.25"] [Round "1"] [White "Mephisto Academy"] [Black "Mephisto T+T"] [Result "0-1"] [TimeControl "40/120"] 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. O-O Nxc3 12. Rxc3 e5 13. Qc2 exd4 14. exd4 Nb6 15. Re1 Qd6 16. b3 Bg4 17. Qe4 Nxc4 18. bxc4 Bxf3 19. Rxf3 Rad8 20. Rd3 b5 21. cxb5 cxb5 22. Rdd1 Qd5 23. a3 a5 24. Qe7 Rd7 25. Qe3 b4 26. Rd3 bxa3 27. Rxa3 Qxd4 28. Qxd4 Rxd4 29. Rxa5 h6 30. g3 Kh7 31. Ra6 Rfd8 32. Re7 R8d7 33. Rxd7 Rxd7 34. Kg2 f6 35. h4 Kg6 36. Kf3 h5 37. Ra5 Rb7 38. Ke4 Rb4+ 39. Kd3 Rb3+ 40. Kc4 Rf3 41. Ra2 Kf5 42. Kd5 g5 43. hxg5 fxg5 44. Ra7 Kg4 45. Ra4+ Kh3 46. Ra8 Rxf2 47. Rh8 Kg4 48. Ke4 Rg2 49. Rd8 Kxg3 50. Kf5 Kh2 51. Rh8 h4 52. Rh7 h3 53. Ke4 g4 54. Kf4 Rg1 55. Rh8 Kg2 0-1 Polgar and academy have similar kind of programs. Maybe it is an academy prototype that was based on polgar. An early version of academy that not even had the name academy but „T+T“ instead. Or it is a successor version of the academy. Difficult to say. Maybe by relating bednorz tönissen values we can find out differences
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| Folgender Benutzer sagt Danke zu mclane für den nützlichen Beitrag: | ||
kamoj (25.12.2023) | ||
#24
25.12.2023, 18:32
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Re: AW: Mephisto T+T (im Academy)
 Zitat von mclane
An early version of academy that not even had the name academy but „T+T“ instead.
oldest Academy program date: August 1988 Polgar 1.10: August 1989 (Polgar 'Urversion': ? maybe a month or so older)
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kamoj (25.12.2023) | ||
#25
25.12.2023, 18:37
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AW: Mephisto T+T (im Academy)
If polgar is so much younger this makes no sense, or ?!
Did ed tried to make a second academy engine after the first had been released ?!? Strange.
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| Folgender Benutzer sagt Danke zu mclane für den nützlichen Beitrag: | ||
kamoj (25.12.2023) | ||
#26
25.12.2023, 19:26
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AW: Re: Mephisto T+T (im Academy)
Zitat von hap
I'm not sure this is a prototype of Polgar. A prototype of Polgar would make more sense on Polgar hardware.
If not Polgar, then probably a prototype of Academy (if its date is earlier) - I see no other Schroeder engines that are similar to this T+T. I think it will be the best to just call this T+T 'prototype' instead of 'Polgar prototype'
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kamoj (25.12.2023) | ||
#27
25.12.2023, 20:12
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Re: Mephisto T+T (im Academy)
I think it's a prototype module for Academy, based on the Polgar 1.0 program. An Academy-Polgar Frankenstein.
Such a module is not worth producing IMO, since the difference in strength between Academy and Polgar is minor.
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| Folgender Benutzer sagt Danke zu hap für den nützlichen Beitrag: | ||
kamoj (25.12.2023) | ||
#28
25.12.2023, 20:20
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AW: Mephisto T+T (im Academy)
So you think after polgar came out they tried to make an upgrade for the academy, and this is the prototype?
2 things: Polgar is to be said to have a size of 64 kb rom. Academy is to be said to have 48 kb rom. (This makes IMO sense because most often later engines grow in size, isnt milano also 64 kb ?!) Irritating is IMO that it is said academy has smaller size (48) but in opposite to polgar (64) it has a bigger book. Is there so much „knowledge“ in polgar engine to be bigger even with smaller book ?? Imo we can only find out by bednorz tönissen or other position tests, what is going on. Then we can relate solution times. I guess academy and polgar were tested, so only T+T needs testing. We would then see if the solution times are identical to polgar, or to academy, or non of that.
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#29
25.12.2023, 20:27
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Re: Mephisto T+T (im Academy)
Both are 64KB
 The Academy EPROM labeled "16KB" is a 32KB EPROM. However: Both only use 48KB. On Academy and Polgar, CPU addresses 0000-3FFF are for I/O and RAM. (and no ROM banking tricks) The file data for T+T is already very similar to Polgar 1.10, and I expect more similarity with the yet-undumped Polgar 1.00. Milano: Yes, also 64KB ROM. 0000-1FFF for I/O and RAM, so total program+book size = 56KB. Geändert von hap (25.12.2023 um 20:34 Uhr)
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#30
26.12.2023, 18:30
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AW: Mephisto T+T (im Academy)
relating the Bednorz Tönissen Test 2450 results it looks like a clear Polgar in the academy housing:
Code:
BT 2450 Academy Polgar "T+T" 1 900 900 2 900 900 3 900 900 4 900 900 5 166 184 180 6 141 143 7 537 900 900 8 900 900 9 92 900 900 10 900 900 11 900 629 604 12 371 450 452 13 430 666 14 900 900 15 6 21 16 205 291 17 900 900 18 900 900 19 900 900 20 900 900 21 6 184 179 22 105 138 23 343 376 24 900 900 25 900 900 26 9 9 27 900 900 28 572 542 29 3 3 30 91 92 ---------------------------------- " 16577 18128 BT ELO 1897 1846 Major question is of course: WHY. was it planned to upgrade the academy machine with polgar engine ?!
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