A8 Memory - Agilent Technologies 35670A Service Manual

Memory Controller
FLASH ROM, DRAM,
and SRAM
Circuit Descriptions

A8 Memory

A8 Memory
The A8 Memory assembly provides the A7 CPU assembly with ROM, dynamic RAM
(DRAM), static RAM (SRAM), and a real-time clock.
Provides the interface between the A7 CPU assembly and the Memory assembly for data
transfer.
Stores data in 32-bit words. To access a memory location, the A7 CPU assembly puts the
address of the desired 32-bit word on the processor address bus. The following user-accessible
states are stored in SRAM. These states are unchanged by power-up or preset.
[ Local/Gpib ]
[ SYSTEM CONTOLLR ]
[ ADDRESSBL ONLY ]
[ ANALYZER ADDRESS ]
[ PLOTTER ADDRESS ]
[ PRINTER ADDRESS ]
[ DISK ADDRESS ]
[ DISK UNIT ]
[ System Utility ]
[ CLOCK SETUP ]
[ TIME HHMM ]
[ DATE MMDDYY ]
[ TIMESTAMP SETUP ]
[ KEYBOARD SETUP ]
[ Plot/Print ]
[ PLOT/PRNT DEVICE ]
[ PLOT/PRNT DESTINATN ]
[ SETUP ]
[ PLOT LINE SETUP ]
[ MORE SETUP ]
[ PLOT PEN SPEED ]
[ P1 P2 SETUP ]
[ TIME STMP ON OFF ]
[ PAGE EJCT ON OFF ]
[ SERIAL SETUP ]
[ Disk Utility ]
[ FORMAT DISK ]
[ DISK TYPE LIF DOS ]
[ DEFAULT DISK ]
[ NON-VOL RAM DISK ]
[ VOLATILE RAM DISK ]
[ INTERNAL DISK ]
[ EXTERNAL DISK ]
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Agilent 35670A