For Dallas Semiconductor DS89C430 — External & On-Chip Memory
Simulation support for this peripheral or feature is comprised of:
These simulation capabilities are described below.
External and On-Chip Memory
The ROMSIZE feature allows your software to configure the maximum address of on-chip Flash program memory. This allows on-chip Flash to act as a bootstrap loader for an external Flash or Nonvolatile SRAM. You may also use the ROMSIZE feature to increase the amount of available program memory from 64KB to 80KB without bank switching.
1k bytes of on-chip RAM is available as external data memory possibly eliminating the need for off-chip external RAM. When enabled by software, the MOVX instruction accesses this data memory instead of any off-chip memory that may exist.
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