MV/7800 CPU
I had a new macro lens and I just started playing around with it. This is the CPU chipset plus memory controller from a Data General MV/7800 minicomputer (c. 1986)
So it had a “System Processing Unit” which consisted of 3 NMOS chips:
Microsequencer
CPU
FPU
Cycle time was 320 ns (I think that’s 3MHz)
I/O controller for Burst Multiplexor Channel (BMC) in CMOS – that would be the one w/o the heatsink. This was basically the interface for disk.
I/O controller for data channel and programmed I/O (NMOS) This was the interface used by networking cards and the like.
Memory controller was an ECL chip from Moto.
The system had 2MB or 4MB options for on-board memory.
MV/7800 CPU
I had a new macro lens and I just started playing around with it. This is the CPU chipset plus memory controller from a Data General MV/7800 minicomputer (c. 1986)
So it had a “System Processing Unit” which consisted of 3 NMOS chips:
Microsequencer
CPU
FPU
Cycle time was 320 ns (I think that’s 3MHz)
I/O controller for Burst Multiplexor Channel (BMC) in CMOS – that would be the one w/o the heatsink. This was basically the interface for disk.
I/O controller for data channel and programmed I/O (NMOS) This was the interface used by networking cards and the like.
Memory controller was an ECL chip from Moto.
The system had 2MB or 4MB options for on-board memory.