ICL 4-70
ICL SYSTEM 4-70 [1]
ICL System 4-70, (ICL 4-70)
a 32-bit mainframe computer, member of the English Electric System 4 and since 1968 ICL 4 series, derived from the RCA Spectra 70, an IBM 360 clone. The IBM 360 compatibility made it particularly attractive to customers in the Soviet Union, as the sale of IBM computers was politically sensitive and commercially restricted during the Cold War [2]. Computer speed was 0.280 MWIPS on Whetstone benchmark [3] and 368 KIPS on Gibson Mix benchmark [4]. The cost of the computer in 1968 was 600 thousand pounds [5].
Photos
Kaissa on ICL 4-70 operated by Vladimir Arlazarov during the WCCC 1974 [6]
Quotes
Quote by Aaron L. Futer about the ICL 4-70 computer at the Institute of Control Sciences:
The algorithm is implemented on a computer with the IBM-360 command system. The unit of information of this computer is a byte — 8 binary digits (bits). The command system provides for work with the following values: byte, halfword (2 bytes), word (4 bytes), double word (8 bytes), variable length field (up to 256 bytes). Performance depends on the command format, but on average it is 300 thousand operations per second. The machine's main memory, available to the programmer, is 330 thousand bytes. Capacity of external devices: magnetic tape — 20×106 bytes, disk — 7.2×106 bytes. The operating system allows several programs to run in parallel. To encode the chessboard, we use 64 bits — a double word. Bits are numbered from 0 to 63 [7].
Chess Programs
See also
External Links
- English Electric System 4
- RCA Spectra 70
- ICL 4-70, instalacja w Oliwie, zespół ETO (I197705).jpg - Wikimedia Commons
- 80 years of the ICS RAS.pdf, p.307. See also 75 years of the ICS RAS.pdf, pp.100, 108, 471, 613
- Yuri Averbakh on the victory of Kaissa in 1974. Video
- ICL 4-70 in the ICS RAS computer room
- From the movie "Alternativa", 1975
- ICL 4-70 in the ICS RAS computer room (8:33 - 14:49):
References
- ↑ ICL SYSTEM 4-70, Hungary, Budapest XIV, Angol Street 27, the National Design Office's computer center, 1973, FOTO: Fortepan — ID 99262, Donor: UVATERV, Wikimedia Commons
- ↑ International Computers Limited - English Electric LEO Marconi (EELM)
- ↑ Whetstone Benchmark History and Results
- ↑ Computer Speeds From Instruction Mixes pre-1960 to 1971
- ↑ The European Computer Users Handbook, 1969, p. II/21
- ↑ Kaissa World Champion from Памяти Г. М. Адельсон-Вельского | Facebook (cropped), Image from display case TASS, 1974
- ↑ Translated by Google Translate Edward Komissarchik, Aaron L. Futer (1974). On the analysis of the queen endgame using a computer. in Problems of Cybernetic, No. 29 , p. 213
