Multiport memory

Multiport memory (MPM) were used as a way of moving large amounts of data between separate computers or devices, for example connecting a disk or for internal sharing of memory between a NORD-10/S and a NORD-50. Multiport memory have been used from the original NORD-1 to the ND-5000 series of computers.

There have been a number of different generations.

• Multiport Memory : Core memory used in the original NORD-1 up to NORD-10. Third party memory modules.
• Big MultiPort Memory : First generation of silicon based memory. Up to 4 MByte of memory. Same form factor as the NORD-10 CPU.
• Multiport Memory 4 : Introduced for the ND-100 / ND-500 computers. Up to 32 MByte of memory. Using a standard ND-100 back plane and same form factor. Introduced with a couple of new options for back planes.
• Multiport Memory 5 : Highly integrated with the ND-5000 series of CPU:s. Using the same crate and form factor as the ND-5000 CPU.

References

Core memory :

• Norsk Data Document ND–01.004.01 NORD-1 HARDWARE MANUAL
• NORD-1 Reference Manual

Big Multiport Memory :

• Norsk Data Document ND–6.007.01 [[Documentation list#Unknown|] ]
• ND-500 binder, chapter 7 : Multiport memory

MultiPort Memory 4

• Norsk Data Document ND–10.003.01 TECHNICAL INTRODUCTION TO MULTIPORT 4
• Norsk Data Document ND–10.007.01 MULTIPORT MEMORY 4 TECHNICAL DESCRIPTION

MPM 5

• Norsk Data Document ND–10.004.01 MULTIPORT MEMORY 5 TECHNICAL DESCRIPTION
• Norsk Data Document ND–10.005.01 MULTIPORT MEMORY 5 BUS DESCRIPTION

Unknown version

• Norsk Data Document ND–10.006.01 MULTIPORT MEMORY CHANNEL SPECIFICATIONS