Lpc2000

The LPC2106 user guide (2003 Oct 02 Page 17) describes the operation 
of the write-back buffer, 

but does not say what happens if the CPU writes a byte
and then tries to read the same address without an additional write. 

Is the value returned by the read first written and then read back, 
or is the value read from the write-back buffer ?


Thanks in Advance
Joseph

The exact wording is 

The SRAM controller incorporates a write-back buffer in order to 
prevent CPU stalls during back-to-back writes. The write-back
buffer always holds the last data sent by software to the SRAM. This 
data is only written to the SRAM when another write is
requested by software. If a chip reset occurs, actual SRAM contents 
will not reflect the most recent write request. Any software
that checks SRAM contents after reset must take this into account. A 
dummy write to an unused location may be appended to
any operation in order to guarantee that all data has really been 
written into the SRAM.