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Memory Address Calculations
- What is the largest memory starting at ?
- in binary →
- Largest total (address space) →
- in decimal →
- Subtract start →
Chip Select
- Find the memory device size for a chip select with 23 address lines and a bit pattern of
- Bit pattern →
- Low → →
- High → →
- Memory space →
- Memory device size →
Devices
- How many 32K memories can be placed in a processor with 24 lines?
- Total space →
- Each device →
- Number of devices →
Active Low Chip Select
- Design an active low chip select for the memory range to and the memory space of
- Memory range → to
- Memory space → → 20 address lines
- →
- →
- Bit pattern →
DRAM vs SRAM
- Speed → SRAM is faster because DRAM has to refresh
- Cost → DRAM is cheaper because it has less components
- Density → DRAM because it has less components
Bus Signals
- Writing from RAM to processor, what values do R and W have?
IPv4 Addressing
- Class C IPv4 address → 24 bits for network, 8 bits for host
- IE:
- Subnet →
- Host ID →
- Broadcast →
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