- Home >
- Artifacts of IP Heritage >
- 2015 >
- TTL logic circuit card (for FACOM 230-60)
TTL logic circuit card (for FACOM 230-60)
| Manufactured in | 1968 |
|---|---|
| Manufactured by | Fujitsu Ltd. |
| Owner | Kyoto University, Academic Center for Computing and Media Studies (ACCMS) |
| Location of historical materials | Kyoto University, Academic Center for Computing and Media Studies (ACCMS)
Sakyo-ku, Kyoto 606-8501, Japan |
| Visitor information | Open to the public (Reservation required) |
| Contact | Kyoto University, Academic Center for Computing and Media Studies (ACCMS)
https://www.media.kyoto-u.ac.jp/ |
This is a logic circuit card for a multi-processor FACOM 230-60, which fully adopted monolithic ICs and had the highest performance at that time in Japan. FACOM 230-60 had not only better performance by 4 to 10 times than its preceding model FACOM 230-50, but also enhanced online data processing function. The first unit was deployed in Kyoto University, when its Data Processing Center was founded in 1969.
FACOM 230-60 had a high-speed magnetic core storage of up to 262,144 words (one word consists of data 36 bits, flag 4 bits, parity 2 bits, totally 42 bits) with core size of 20 mil and cycle time of 0.92μs, and also a large-capacity magnetic core storage of up to 86,432 words with cycle time of 6μs. Its computing performance is 1.26μs and 4.06μs addition/subtraction and multiplication for fixed-point arithmetic, and 2.27μs and 3.68μs addition/subtraction and multiplication for floating-point arithmetic.
Its OS covered batch, real-time, and interactive processing. Other features include built-in hardware DIAC (DIAgnostic Control unit) to diagnose the processing device itself and a switching console to connect/disconnect component devices to the system. Since its announcement, FACOM 230-60 had a high reputation and more than 130 units were shipped.