Hitachi announced the HITAC M-860 processor group of compact and mid-range mainframes in February 1992. This group featured low-power 12k-gate bipolar LSIs, 384 kbit RAM, and 18k-gate logic BiCMOS LSIs. The nine models covered a 13-fold performance range, with the top model using four processors.
System performance was enhanced with a 16 TB extension storage unit and with 18 MB per second optical channels and 9 MB per second metal channels for high-speed data transfers with peripheral devices.
The M-860 processor group provided diverse, flexible operation with such offerings as processor-distribution operation and virtual machine systems.
|No. of instruction processors||1||2||3||4|
|Buffer memory capacity||32KB||64KB||256KB(instruction: 128 KB, data: 128 KB)|
|Main memory capacity [MB]||32-512||64-512||64-1024||128-1024|
|No. of channels||8-32||16-64||32-128|