This series, employing Fujitsu's virtual memory system, was announced in August 1973 in competition to IBM's virtual storage system (announced in August 1972). The FACOM 230-8 Series was comprised of 5 models -- the FACOM 230-28S, 28, 38, 48 and 58 -- ranging from mid to large size, and it provided more comprehensive functionality and improved processing speed through innovations like employing a high-efficiency virtual memory system, using 1Kbit MOS IC memory, and connecting a newly developed magnetic disk unit for high capacity files (100Mbyte capacity per disk pack). Fujitsu provided a software-based virtual memory system (software paging system) in the FACOM 230-25 and 35 announced in 1968, and a hardware-based virtual memory system in the FACOM 230-45S and 55 announced in 1969, and thus they had an established basis for virtual memory systems. This allowed Fujitsu to announce a competing model just one year after IBM's announcement of their virtual storage system (370/158, 168) in August of 1972.
with 2 CPUs)
|(Magnetic core)||MOS IC memory (1Kbit/chip)|
|Parity check||ECC (1bit automatic error correction,
2bit automatic error detection)