M383: 128 Byte RAM

The M 383 is an 128 words by 8 bits MOS Random Access Memory. This RAM is specifically designed for the microcomputer system M 38 and it can be directly connected on the M 38 buses without any additional logic.
The unit includes:

• 128 words of 8 bit RAM.
• The logic to compare the module codes selected on thestrap lines (assigned to the unit during system design) and the information on the address bus.
• A 7 bit register (the Z register) on which the RAM address is stored.
  The Z register content can be modified by writing into it from the data bus.
• One I/0 port of 8 bits.

More details: M380 uP System and Instruction Set. SGS/ATES