TC1796
System Units (Vol. 1 of 2)
Peripheral Control Processor (PCP)
User’s Manual 11-15 V2.0, 2007-07
PCP, V2.0
If portions of the PRAM are used for other variables and global data, the space available
for the CSA and the range of valid SRPNs is reduced by the memory space required for
this data. For best utilization of PRAM, it is advisable to have the CSA grow upwards as
a contiguous area without any “holes”, meaning that all SRPNs in the range 1 … max.
are actually used to place interrupt requests on the PCP. Unused regions within the CSA
(that is, the unused region at the base of the CSA and any context regions associated
with unused channels) cannot be used for general variable storage.